Particularly preferred IL-17 binding molecules of the disclosure are human antibodies, especially the AIN457 antibody (secukinumab) as described in Examples 1 and 2 of WO 2006/013107. AIN457 is a high-affinity, fully human monoclonal anti- human interleukin-17A (IL-17 A, IL-17) antibody of the IgGl /kappa isotype that is currently in clinical trials for the treatment of immune-mediated inflammatory conditions. The AIN457 antibody has binding affinity for IL-17 that is higher than affinities previously reported for anti-human IL-17 antibodies. AIN457 binds with very high affinity to recombinant human IL-17 (huIL-17); the K_D is about 200 pM (BIAcore®) (see, e.g., WO2006/013107 and WO2007/117749) and neutralizes human IL-6 production induced by huIL-17 in human dermal fibroblast with an IC₅₀ is 2.1 ±0.1 nM at a concentration of 1.87 nM huIL-17. Thus, AIN457 neutralizes antigen at a molar ratio of about 1 : 1. This high binding affinity makes the AIN457 antibody particularly suitable for therapeutic applications.

In preferred embodiments, the variable domains of both heavy and light chains are of human origin, for instance those of the AIN457 antibody which are shown in SEQ ID NO: 10 (= variable domain of light chain, i.e., amino acid 1 to 109 of SEQ ID NO: 10) and SEQ ID NO: 8 (= variable domain of heavy chain, i.e., amino acid 1 to 127 of SEQ ID NO: 8). The constant region domains preferably also comprise suitable human constant region domains, for instance as described in "Sequences of Proteins of Immunological Interest", Kabat E.A. et al, US Department of Health and Human Services, Public Health Service, National Institute of Health. In some embodiments, an IL-17 binding molecule of the disclosure comprises the variable light domain of SEQ ID NO: 10. In other embodiments, an IL-17 binding molecule of the disclosure comprises the variable heavy domain of SEQ ID NO:8. In other embodiments, an IL-17 binding molecule of the disclosure comprises the variable light domain of SEQ ID NO: 10 and the variable heavy domain of SEQ ID NO:8. In some embodiments, an IL-17 binding molecule of the disclosure comprises the three CDRs of SEQ ID NO: 10. In other embodiments, an IL-17 binding molecule of the disclosure comprises the three CDRs of SEQ ID NO:8. In other embodiments, an IL-17 binding molecule of the disclosure comprises the three CDRs of SEQ ID NO: 10 and the three CDRs of SEQ ID NO:8. The CDRs of SEQ ID NO: 8 and SEQ ID NO: 10, according to both the Chothia and Kabat definition, may be found in Table 1, supra.

In some embodiments, an IL-17 binding molecule of the disclosure comprises the light domain of SEQ ID NO: 15. In other embodiments, an IL-17 binding molecule of the disclosure comprises the heavy domain of SEQ ID NO: 17. In other embodiments, an IL- 17 binding molecule of the disclosure comprises the light domain of SEQ ID NO: 15 and the heavy domain of SEQ ID NO: 17. In some embodiments, an IL-17 binding molecule of the disclosure comprises the three CDRs of SEQ ID NO: 15. In other embodiments, an IL-17 binding molecule of the disclosure comprises the three CDRs of SEQ ID NO: 17. In other embodiments, an IL-17 binding molecule of the disclosure comprises the three CDRs of SEQ ID NO: 15 and the three CDRs of SEQ ID NO: 17. The CDRs of SEQ ID NO: 15 and SEQ ID NO: 17, according to both the Chothia and Kabat definition, may be found in Table 1, supra.

Hypervariable regions may be associated with any kind of framework regions, though preferably are of human origin. Suitable framework regions are described in Kabat E.A. et al, ibid. The preferred heavy chain framework is a human heavy chain framework, for instance that of the AIN457 antibody. It consists in sequence, e.g. of FRl (amino acid 1 to 30 of SEQ ID NO:8), FR2 (amino acid 36 to 49 of SEQ ID NO:8), FR3 (amino acid 67 to 98 of SEQ ID NO:8) and FR4 (amino acid 117 to 127 of SEQ ID NO: 8) regions. Taking into consideration the determined hypervariable regions of AIN457 by X-ray analysis, another preferred heavy chain framework consists in sequence of FRl-x (amino acid 1 to 25 of SEQ ID NO:8), FR2-x (amino acid 36 to 49 of SEQ ID NO:8), FR3-x (amino acid 61 to 95 of SEQ ID NO:8) and FR4 (amino acid 119 to 127 of SEQ ID NO:8) regions. In a similar manner, the light chain framework consists, in sequence, of FR1 ' (amino acid 1 to 23 of SEQ ID NO: 10), FR2' (amino acid 36 to 50 of SEQ ID NO: 10), FR3' (amino acid 58 to 89 of SEQ ID NO: 10) and FR4' (amino acid 99 to 109 of SEQ ID NO: 10) regions.

In one embodiment, an IL-17 binding molecule (e.g., IL-17 antibody, e.g., AIN457) is selected from a human anti IL-17 antibody which comprises at least:

a) an immunoglobulin heavy chain or fragment thereof which comprises a variable domain comprising in sequence the hypervariable regions CDRl, CDR2 and CDR3 or direct CDR equivalents thereof and the constant part or fragment thereof of a human heavy chain; said CDRl having the amino acid sequence SEQ ID NO: l, said CDR2 having the amino acid sequence SEQ ID NO:2, and said CDR3 having the amino acid sequence SEQ ID NO:3; and

b) an immunoglobulin light chain or fragment thereof which comprises a variable domain comprising in sequence the hypervariable regions and optionally also the CDRl ', CDR2', and CDR3' hypervariable regions or direct CDR' equivalents thereof and the constant part or fragment thereof of a human light chain, said CDRl ' having the amino acid sequence SEQ ID NO: 4, said CDR2' having the amino acid sequence SEQ ID NO:5, and said CDR3' having the amino acid sequence SEQ ID NO:6.

In one embodiment, an IL-17 binding molecule (e.g., IL-17 antibody, e.g., AIN457) is selected from a single chain binding molecule which comprises an antigen binding site comprising:

a) a first domain comprising in sequence the hypervariable regions CDRl, CDR2 and CDR3 or direct CDR equivalents thereof, said CDRl having the amino acid sequence SEQ ID NO: l, said CDR2 having the amino acid sequence SEQ ID NO:2, and said CDR3 having the amino acid sequence SEQ ID NO: 3; and

b) a second domain comprising the hypervariable regions CDRl', CDR2' and CDR3' or direct CDR' equivalents thereof, said CDRl ' having the amino acid sequence SEQ ID NO:4, said CDR2' having the amino acid sequence SEQ ID NO:5, and said CDR3' having the amino acid sequence SEQ ID NO:6; and c ) a peptide linker which is bound either to the N-terminal extremity of the first domain and to the C-terminal extremity of the second domain or to the C-terminal extremity of the first domain and to the N-terminal extremity of the second domain.

By the term "direct CDR equivalents thereof are meant IL-17 binding molecules comprising in sequence the hypervariable regions CDRl^ CDR2_ii and CDR3i, (instead of CDR1_, CDR2_, and CDR3), wherein

(i) the hypervariable region CDRli differs by 3, preferably 2, more preferably 1 amino acid(s) from the hypervariable region CDR1 as shown in SEQ ID NO: 1; and

(ii) the hypervariable region CDR2i differs by 3, preferably 2, more preferably 1 amino acid(s) from the hypervariable region CDR2 as shown in SEQ ID NO: 2; and

(iii) the hypervariable region CDR3i differs by 3, preferably 2, more preferably 1 amino acid(s) from the hypervariable region CDR3 as shown in SEQ ID NO: 3; and

(iv) such a molecule comprising in sequence the hypervariable regions CDRli, CDR2i_, and CDR3i is capable of inhibiting the activity of 1 nM (= 30ng/ml) human IL-17 at a concentration of 50 nM, preferably 20nM, more preferably 10 nM, more preferably 5 nM of said molecule by 50%, said inhibitory activity is measured on IL-6 production induced by hu-IL-17 in human dermal fibroblasts.

Similarly, by the term "direct CDR-x equivalents thereof are meant IL-17 binding molecules comprising in sequence the hypervariable regions CDRli-x, CDR2i-x, and CDR3i-x, (instead of CDRl-x, CDR2-X, and CDR3-x), wherein

(i) the hypervariable region CDRli-x differs by 3, preferably 2, more preferably 1 amino acid(s) from the hypervariable region CDRl-x as shown in SEQ ID NO: 11; and

(ii) the hypervariable region CDR2i-x differs by 3, preferably 2, more preferably 1 amino acid(s) from the hypervariable region CDR2-X as shown in SEQ ID NO: 12; and (iii) the hypervariable region CDR3i-x differs by 3, preferably 2, more preferably 1 amino acid(s) from the hypervariable region CDR3-X as shown in SEQ ID NO: 13; and

(iv) such a molecule comprising in sequence the hypervariable regions CDRli-x, CDR2i-x_, and CDR3i-x is capable of inhibiting the activity of 1 nM (= 30ng/ml) human IL-17 at a concentration of 50 nM, preferably 20nM, more preferably 10 nM, more preferably 5 nM of said molecule by 50%, said inhibitory activity is measured on IL-6 production induced by hu-IL-17 in human dermal fibroblasts.

Similarly, by the term "direct CDR' equivalents thereof is meant a domain comprising in sequence the hypervariable regions CDRl \, CDR2'i, and CDR3\, wherein

(i) the hypervariable region CDRl differs by 3, preferably 2, more preferably 1 amino acid(s) from the hypervariable region CDRl ' as shown in SEQ ID NO: 4; and

(ii) the hypervariable region CDR2\ differs by 3, preferably 2, more preferably 1 amino acid(s) from the hypervariable region CDR2' as shown in SEQ ID NO: 5; and

(iii) the hypervariable region CDR3'i differs by 3, preferably 2, more preferably 1 amino acid(s) from the hypervariable region CDR3' as shown in SEQ ID NO: 6; and

(iv) such a molecule comprising in sequence the hypervariable regions CDRl \, CDR2'i_, and CDR3'i is capable of inhibiting the activity of 1 nM (= 30ng/ml) human IL-17 at a concentration of 50 nM, preferably 20nM, more preferably 10 nM, more preferably 5 nM of said molecule by 50%, said inhibitory activity is measured on IL-6 production induced by hu-IL-17 in human dermal fibroblasts.

Alternatively, an IL-17 binding molecule (e.g., IL-17 antibody, e.g., AIN457) may comprise at least one antigen binding site comprising at least one immunoglobulin heavy chain variable domain (V_H) which comprises in sequence:

a) hypervariable regions CDRl (SEQ ID NO: 1), CDR2 (SEQ ID NO: 2) and CDR3 (SEQ ID NO: 3); or b) hypervariable regions CDRli, CDR2_i? CDR3i, said hypervariable region CDRli differs by 3, preferably 2, more preferably 1 amino acid(s) from the hypervariable region of CDR1 as shown in SEQ ID NO: 1, said hypervariable region CDR2i differs by 3, preferably 2, more preferably 1 amino acid(s) from the hypervariable region of CDR2 as shown in SEQ ID NO: 2; and said hypervariable region CDR3i differs by 3, preferably 2, more preferably 1 amino acid(s) from the hypervariable region of CDR3 as shown in SEQ ID NO: 3; and said binding IL-17 molecule comprising in sequence the

hypervariable regions CDR1_X, CDR2_X, and CDR3_X is capable of inhibiting the activity of about 1 nM (= 30ng/ml) human IL-17 at a concentration of about 50 nM or less, about 20 nM or less, about 10 nM or less, about 5 nM or less, about 2 nM or less, or more preferably of about 1 nM or less of said molecule by 50%, said inhibitory activity is measured on IL-6 production induced by hu-IL-17 in human dermal fibroblasts.

Similarly, an IL-17 binding molecule (e.g., IL-17 antibody, e.g., AIN457) may comprise at least one antigen binding site comprising at least one immunoglobulin heavy chain variable domain (V_H) which comprises in sequence

a) hypervariable regions CDRl-x (SEQ ID NO: 11), CDR2-X (SEQ ID NO: 12) and CDR3-X (SEQ ID NO: 13); or

b) hypervariable regions CDRli-x, CDR2i-x, CDR3i-x, said hypervariable region CDRli-x differs by 3, preferably 2, more preferably 1 amino acid(s) from the

hypervariable region of CDRl-x as shown in SEQ ID NO: 11, said hypervariable region CDR2i-x differs by 3, preferably 2, more preferably 1 amino acid(s) from the

hypervariable region of CDR2-X as shown in SEQ ID NO: 12; and said hypervariable region CDR3;-x differs by 3, preferably 2, more preferably 1 amino acid(s) from the hypervariable region of CDR3-X as shown in SEQ ID NO: 13; and said binding IL-17 molecule comprising in sequence the hypervariable regions CDRli-x, CDR2i-x, and CDR3i-x is capable of inhibiting the activity of 1 nM (= 30ng/ml) human IL-17 at a concentration of about 50 nM or less, about 20 nM or less, about 10 nM or less, about 5 nM or less, about 2 nM or less, or more preferably of about 1 nM or less of said molecule by 50%, said inhibitory activity is measured on IL-6 production induced by hu-IL-17 in human dermal fibroblasts. Similarly, an IL-17 binding molecule (e.g., IL-17 antibody, e.g., AIN457) may comprise at least one antigen binding site comprising at least one immunoglobulin light chain variable domain (V_L) which comprises in sequence

a) hypervariable regions CDR' 1 (SEQ ID NO: 4), CDR'2 (SEQ ID NO: 5) and CDR'3 (SEQ ID NO: 6); or

b) hypervariable regions CDR1 \, CDR2\, CDR3\, said hypervariable region CDR' li differs by 3, preferably 2, more preferably 1 amino acid(s) from the

hypervariable region of CDR' l as shown in SEQ ID NO: 4, said hypervariable region CDR'2; differs by 3, preferably 2, more preferably 1 amino acid(s) from the

hypervariable region of CDR'2 as shown in SEQ ID NO: 5; and said hypervariable region CDR' 3; differs by 3, preferably 2, more preferably 1 amino acid(s) from the hypervariable region of CDR'3 as shown in SEQ ID NO: 6; and said binding IL-17 molecule comprises in sequence the hypervariable regions CDR' li, CDR'2i, and CDR'3i is capable of inhibiting the activity of 1 nM (= 30ng/ml) human IL-17 at a concentration of about 50 nM or less, about 20 nM or less, about 10 nM or less, about 5 nM or less, about 2 nM or less, or more preferably of about 1 nM or less of said molecule by 50%, said inhibitory activity is measured on IL-6 production induced by hu-IL-17 in human dermal fibroblasts.

Alternatively, an IL-17 binding molecule (e.g., IL-17 antibody, e.g., AIN457) may comprise both heavy (V_H) and light chain (V_L) variable domains and said IL-17 binding molecule comprises at least one antigen binding site comprising:

a) an immunoglobulin heavy chain variable domain (V_H) which comprises in sequence hypervariable regions CDRl (SEQ ID NO: 1), CDR2 (SEQ ID NO: 2) and CDR3 (SEQ ID NO: 3); and an immunoglobulin light chain variable domain (V_L) which comprises in sequence hypervariable regions CDRl ' (SEQ ID NO: 4), CDR2' (SEQ ID NO: 5) and CDR3' (SEQ ID NO: 6); or

b) an immunoglobulin heavy chain variable domain (V_H) which comprises in sequence hypervariable regions CDRli, CDR2i, and CDR3i, said hypervariable region hypervariable regions CDRli, CDR2i, CDR3i, said hypervariable region CDRli differs by 3, preferably 2, more preferably 1 amino acid(s) from the hypervariable region of CDRl as shown in SEQ ID NO: 1, said hypervariable region CDR2i differs by 3, preferably 2, more preferably 1 amino acid(s) from the hypervariable region of CDR2 as shown in SEQ ID NO: 2; and said hypervariable region CDR3i differs by 3, preferably 2, more preferably 1 amino acid(s) from the hypervariable region of CDR3 as shown in SEQ ID NO: 3; and an immunoglobulin light chain variable domain (V_L) which comprises in sequence hypervariable regions CDRl 'i, CDR2'i, CDR3'i, said hypervariable region CDR' li differs by 3, preferably 2, more preferably 1 amino acid(s) from the

hypervariable region of CDR' l as shown in SEQ ID NO: 4, said hypervariable region CDR'2i differs by 3, preferably 2, more preferably 1 amino acid(s) from the

hypervariable region of CDR'2 as shown in SEQ ID NO: 5; and said hypervariable region CDR'3i differs by 3, preferably 2, more preferably 1 amino acid(s) from the hypervariable region of CDR'3 as shown in SEQ ID NO: 6; and said binding IL-17 molecule defined in b) comprises in sequence the hypervariable regions CDRli, CDR2i, CDR3i, CDR' li_, CDR'2i_, and CDR'3i is capable of inhibiting the activity of 1 nM (= 30ng/ml) human IL-17 at a concentration of about 50 nM or less, about 20 nM or less, about 10 nM or less, about 5 nM or less, about 2 nM or less, or more preferably of about 1 nM or less of said molecule by 50%, said inhibitory activity is measured on IL-6 production induced by hu-IL-17 in human dermal fibroblasts.

a) an immunoglobulin heavy chain variable domain (V_H) which comprises in sequence hypervariable regions CDRl-x (SEQ ID NO: l 1), CDR2-X (SEQ ID NO: 12) and CDR3-X (SEQ ID NO: 13); and an immunoglobulin light chain variable domain (V_L) which comprises in sequence hypervariable regions CDR1 ' (SEQ ID NO: 4), CDR2' (SEQ ID NO: 5) and CDR3' (SEQ ID NO:6); or

b) an immunoglobulin heavy chain variable domain (V_H) which comprises in sequence hypervariable regions CDRli-x, CDR2i-x, and CDR3i-x, said hypervariable region hypervariable regions CDRli-x, CDR2i-x, CDR3i-x, said hypervariable region CDRli-x differs by 3, preferably 2, more preferably 1 amino acid(s) from the

hypervariable region of CDRl-x as shown in SEQ ID NO: 11, said hypervariable region CDR2i-x differs by 3, preferably 2, more preferably 1 amino acid(s) from the hypervariable region of CDR2-X as shown in SEQ ID NO: 12; and said hypervariable region CDR3i-x differs by 3, preferably 2, more preferably 1 amino acid(s) from the hypervariable region of CDR3-X as shown in SEQ ID NO: 13; and an immunoglobulin light chain variable domain (V_L) which comprises in sequence hypervariable regions CDRl 'i, CDR2'i, CDR3'i, said hypervariable region CDR' l; differs by 3, preferably 2, more preferably 1 amino acid(s) from the hypervariable region of CDR' 1 as shown in SEQ ID NO: 4, said hypervariable region CDR'2i differs by 3, preferably 2, more preferably 1 amino acid(s) from the hypervariable region of CDR'2 as shown in SEQ ID NO:5; and said hypervariable region CDR'3i differs by 3, preferably 2, more preferably 1 amino acid(s) from the hypervariable region of CDR' 3 as shown in SEQ ID NO: 6; and said binding IL-17 molecule defined in b) comprises in sequence the hypervariable regions CDRli, CDR2i,CDR3i, CDR' 1_;, CDR'2i, and CDR'3i is capable of inhibiting the activity of 1 nM (= 30ng/ml) human IL-17 at a concentration of about 50 nM or less, about 20 nM or less, about 10 nM or less, about 5 nM or less, about 2 nM or less, or more preferably of about 1 nM or less of said molecule by 50%, said inhibitory activity is measured on IL-6 production induced by hu-IL-17 in human dermal fibroblasts.

A human IL-17 antibody disclosed herein may comprise a heavy chain that is substantially identical to that set forth as SEQ ID NO: 17 and a light chain that is substantially identical to that set forth as SEQ ID NO: 15. A human IL-17 antibody disclosed herein may comprise a heavy chain that comprises SEQ ID NO: 17 and a light chain that comprises SEQ ID NO: 15.

A human IL-17 antibody disclosed herein may comprise:

a) one heavy chain which comprises a variable domain having an amino acid sequence substantially identical to that shown in SEQ ID NO: 8 starting with the amino acid at position 1 and ending with the amino acid at position 127 and the constant part of a human heavy chain; and

b) one light chain which comprises a variable domain having an amino acid sequence substantially identical to that shown in SEQ ID NO: 10 starting with the amino acid at position 1 and ending with the amino acid at position 109 and the constant part of a human light chain. The inhibition of the binding of IL-17 to its receptor may be conveniently tested in various assays including such assays as described in WO 2006/013107. By the term "to the same extent" is meant that the reference and the equivalent molecules exhibit, on a statistical basis, essentially identical IL-17 inhibitory activity in one of the assays referred to herein (see Example 1 of WO 2006/013107). For example, IL-17 binding molecules of the disclosure typically have IC50S for the inhibition of human IL-17 on IL- 6 production induced by human IL-17 in human dermal fibroblasts which are below about 10 nM, more preferably about 9, 8, 7, 6, 5, 4, 3, 2, or about 1 nM of that of, preferably substantially the same as, the IC50 of the corresponding reference molecule when assayed as described in Example 1 of WO 2006/013107.

Alternatively, the assay used may be an assay of competitive inhibition of binding of IL-17 by soluble IL-17 receptors (e.g. the human IL-17 R/Fc constructs of Example 1 of WO 2006/013107) and the IL-17 binding molecules of the disclosure.

The disclosure provides methods for treating PMR (either isolated or associated with GCA), comprising administering a therapeutically effective amount of an IL-17 binding molecules, e.g., IL-17 antibodies, such as AIN457, to a subject suffering from PMR, wherein said IL-17 binding molecule is encoded by a DNA as described herein.

An IL-17 binding molecule of the disclosure may be produced by recombinant DNA techniques. In view of this, one or more DNA molecules encoding the binding molecule must be constructed, placed under appropriate control sequences and transferred into a suitable host organism for expression.

In a very general manner, there are accordingly provided

(i) DNA molecules encoding a single domain IL-17 binding molecule of the

disclosure, a single chain IL-17 binding molecule of the disclosure, an IL-17 binding molecule comprising a heavy and light chain as defined herein, or fragments of a IL-17 binding molecule of the disclosure; and

(ii) the use of the DNA molecules of the disclosure for the production of a IL-17 binding molecule of the disclosure by recombinant means.

The disclosure provides a DNA construct comprising a DNA molecule which is substantially identical to SEQ ID NO:7, SEQ ID NO:9, SEQ ID NO: 14, or SEQ ID NO: 15. Furthermore, the disclosure provides a DNA construct comprising two DNA molecules of which one is substantially identical to SEQ ID NO: 7 or is a direct DNA_R equivalent thereof and the other substantially identical to SEQ ID NO:9, or is a direct DNA_L equivalent thereof.

Furthermore, the disclosure provides a DNA construct comprising two DNA molecules of which one is substantially identical to SEQ ID NO: 14 (AIN457 light chain DNA) or is a direct DNA_R equivalent thereof and the other substantially identical to SEQ ID NO: 16 (AIN457 heavy chain DNA), or is a direct DNA_L equivalent thereof.

The present state of the art is such that the skilled worker in the art is able to synthesize the DNA molecules of the disclosure given the information provided herein i.e. the amino acid sequences of the hypervariable regions and the DNA sequences coding for them. A method for constructing a variable domain gene is for example described in EPA 239 400 and may be briefly summarized as follows: a gene encoding a variable domain of a MAb of whatever specificity is cloned. The DNA segments encoding the framework and hypervariable regions are determined and the DNA segments encoding the

hypervariable regions are removed so that the DNA segments encoding the framework regions are fused together with suitable restriction sites at the junctions. The restriction sites may be generated at the appropriate positions by mutagenesis of the DNA molecule by standard procedures. Double stranded synthetic CDR cassettes are prepared by DNA synthesis according to the sequences encoding for SEQ ID NO: l (CDR1), SEQ ID NO:2 (CDR2), SEQ ID NO:3 (CDR3), SEQ ID NO:4 (CDR1 '), SEQ ID NO:5 (CDR2'), SEQ ID NO:6 (CDR6'), SEQ ID NO: l 1 (CDRl-x), SEQ ID NO: 12 (CDR2-x), SEQ ID NO: 13 (CDR3-x),. These cassettes are provided with sticky ends so that they can be ligated at the junctions of the framework

Furthermore, it is not necessary to have access to the mRNA from a producing hybridoma cell line in order to obtain a DNA construct coding for the IL-17 binding molecules of the disclosure. Thus PCT application WO 90/07861 gives full instructions for the production of an antibody by recombinant DNA techniques given only written information as to the nucleotide sequence of the gene. The method comprises the synthesis of a number of oligonucleotides, their amplification by the PCR method, and their splicing to give the desired DNA sequence. Expression vectors comprising a suitable promoter or genes encoding heavy and light chain constant parts are publicly available. Thus, once a DNA molecule of the disclosure is prepared it may be conveniently transferred in an appropriate expression vector. DNA molecules encoding single chain antibodies may also be prepared by standard methods, for example, as described in WO 88/1649.

In analogy to the case for CDR equivalents, the term "direct DNA_R equivalents thereof is meant to stand for a first DNA construct encoding a heavy chain or fragment thereof of an IL-17 binding molecule of the disclosure and comprises:

a) a first part which encodes a variable domain comprising alternatively

framework and hypervariable regions, said hypervariable regions being in sequence CDRli, CDR2i and CDR3_;, said CDRli is at least 50% identical, preferably at least 60, 70, 80, 85, or 90% identical, more preferably at least 95% identical to the hypervariable region CDR1 as shown in SEQ ID NO: 1, said CDR2i is at least 50% identical, preferably at least 60, 70, 80, 85, or 90%> identical, more preferably at least 95% identical to the hypervariable region CDR2 as shown in SEQ ID NO:2, and CDR3; is at least 50% identical, preferably at least 60, 70, 80, 85, or 90%> identical, more preferably at least 95% identical to the hypervariable region CDR3 as shown in SEQ ID NO: 3; this first part starting with a codon encoding the first amino acid of the variable domain and ending with a codon encoding the last amino acid of the variable domain; and

b) a second part encoding a heavy chain constant part or fragment thereof which starts with a codon encoding the first amino acid of the constant part of the heavy chain and ends with a codon encoding the last amino acid of the constant part or fragment thereof, followed by a stop codon; and

c) said DNA construct encoding for a polypeptide which is capable either alone or in combination with another polypeptide of inhibiting the activity of 1 nM (= 30ng/ml) human IL-17 at a concentration of 50 nM, preferably 20nM, more preferably 10 nM, more preferably 5 nM of said molecule by 50%, said inhibitory activity is measured on IL-6 production induced by hu-IL-17 in human dermal fibroblasts.

Similarly, the term "direct DNA_R-X equivalents thereof is meant to stand for a first alternative DNA construct encoding a heavy chain or fragment thereof of an IL-17 binding molecule (e.g., IL-17 antibody, e.g., AIN457) and comprises: a) a first part which encodes a variable domain comprising alternatively framework and hypervariable regions, said hypervariable regions being in sequence CDRli-x, CDR2i-x and CDR3i-x, said CDRli-x is at least 50% identical, preferably at least 60, 70, 80, 85, or 90%> identical, more preferably at least 95% identical to the hypervariable region CDR1 as shown in SEQ ID NO: l 1, said CDR2;-x is at least 50% identical, preferably at least 60, 70, 80, 85, or 90% identical, more preferably at least 95% identical to the hypervariable region CDR2 as shown in SEQ ID NO: 12, and CDR3i-x is at least 50%> identical, preferably at least 60, 70, 80, 85, or 90%> identical, more preferably at least 95% identical to the hypervariable region CDR3 as shown in SEQ ID NO: 13; this first part starting with a codon encoding the first amino acid of the variable domain and ending with a codon encoding the last amino acid of the variable domain; and

c) said DNA construct encoding for a polypeptide which is capable either alone or in combination with another polypeptide of inhibiting the activity of 1 nM (= 30ng/ml) human IL-17 at a concentration of about 50 nM or less, about 20 nM or less, about 10 nM or less, about 5 nM or less, about 2 nM or less, or more preferably of about 1 nM or less of said molecule by 50%>, said inhibitory activity is measured on IL-6 production induced by hu-IL-17 in human dermal fibroblasts.

Preferably, these DNA constructs encode a variable domain comprising alternatively framework and hypervariable regions, said hypervariable regions being in sequence CDR1, CDR2 and CDR3, said CDR1 having the amino acid sequence SEQ ID NO: l, said CDR2 having the amino acid sequence SEQ ID NO:2, and said CDR3 having the amino acid sequence SEQ ID NO: 3. More preferably, these DNA constructs encode a variable domain comprising alternatively framework and hypervariable regions, said hypervariable regions being in sequence CDRl-x, CDR2-X and CDR3-X, said CDRl-x having the amino acid sequence SEQ ID NO: l 1, said CDR2-X having the amino acid sequence SEQ ID NO: 12, and said CDR3-X having the amino acid sequence SEQ ID NO: 13. More preferably, this first part encodes a variable domain having an amino acid sequence substantially identical to the amino acid sequence as shown in SEQ ID NO: 8 starting with the amino acid at position 1 and ending with the amino acid at position 127. More preferably the first part has the nucleotide sequence as shown in SEQ ID NO: 7 starting with the nucleotide at position 1 and ending with the nucleotide at position 381. Also preferably, the second part encodes the constant part of a human heavy chain, more preferably the constant part of the human γΐ chain. This second part may be a DNA fragment of genomic origin (comprising introns) or a cDNA fragment (without introns).

Similarly, the term "direct DNA_L equivalents thereof is meant to stand for a second DNA construct encoding a light chain or fragment thereof of an IL-17 binding molecule (e.g., IL-17 antibody, e.g., AIN457) of the disclosure and comprises:

a) a first part which encodes a variable domain comprising alternatively framework and hypervariable regions; said hypervariable regions being CDR3i' and optionally CDRli^* and CDR2i', said CDRli' is at least 50% identical, preferably at least 60, 70, 80, 85, or 90% identical, more preferably at least 95% identical to the hypervariable region CDR1 ' as shown in SEQ ID NO: 4, said CDR2i' is at least 50% identical, preferably at least 60, 70, 80, 85, or 90%> identical, more preferably at least 95% identical to the hypervariable region CDR2' as shown in SEQ ID NO: 5, and said CDR3i' is at least 50% identical, preferably at least 60, 70, 80, 85, or 90%> identical, more preferably at least 95% identical to the hypervariable region CDR3' as shown in SEQ ID NO: 6; this first part starting with a codon encoding the first amino acid of the variable domain and ending with a codon encoding the last amino acid of the variable domain; and

b) a second part encoding a light chain constant part or fragment thereof which starts with a codon encoding the first amino acid of the constant part of the light chain and ends with a codon encoding the last amino acid of the constant part or fragment thereof followed by a stop codon; and

c) said DNA construct encoding for a polypeptide which is capable either alone or in combination with another polypeptide of inhibiting the activity of 1 nM (= 30ng/ml) human IL-17 at a concentration of 50 nM, preferably 20nM, more preferably 10 nM, more preferably 5 nM of said molecule by 50%, said inhibitory activity is measured on IL-6 production induced by hu-IL-17 in human dermal fibroblasts. Preferably, this second DNA construct encodes a variable domain comprising alternatively framework and hypervariable regions, said hypervariable regions being in sequence CDRl ', CDR2' and CDR3', said CDRl ' having the amino acid sequence SEQ ID NO:4, said CDR2' having the amino acid sequence SEQ ID NO:5, and said CDR3' having the amino acid sequence SEQ ID NO:6. More preferably, this first part of the second DNA construct encodes a variable domain having an amino acid sequence substantially identical to the amino acid sequence as shown in SEQ ID NO: 10 starting with the amino acid at position 1 and ending with the amino acid at position 109. More preferably, the first part has the nucleotide sequence as shown in SEQ ID NO: 9 starting with the nucleotide at position 1 and ending with the nucleotide at position 327. Also preferably the second part encodes the constant part of a human light chain, more preferably the constant part of the human κ

Preferably, the first and second DNA construct will be used together, but may be also used separately.

The disclosure also includes IL-17 binding molecules in which one or more of the amino acid residues of CDRl, CDR2, CDR3, CDRl-x, CDR2-X, CDR3-X, CDRl , CDR2' or CDR3' or the frameworks, typically only a few (e.g., 1-4), are changed; for instance by mutation, e.g., site directed mutagenesis of the corresponding DNA sequences. The disclosure includes the DNA sequences coding for such changed IL-17 binding molecules. In particular the disclosure includes IL-17 binding molecules in which one or more residues of CDRl ' or CDR2' have been changed from the residues shown in SEQ ID NO:4 (for CDRl ') and SEQ ID NO:5 (for CDR2').

In the first and second DNA constructs, the first and second parts may be separated by an intron, and, an enhancer may be conveniently located in the intron between the first and second parts. The presence of such an enhancer which is transcribed but not translated, may assist in efficient transcription. In particular embodiments the first and second DNA constructs comprise the enhancer of a heavy chain gene advantageously of human origin.

Each of the DNA constructs are placed under the control of suitable control sequences, in particular under the control of a suitable promoter. Any kind of promoter may be used, provided that it is adapted to the host organism in which the DNA constructs will be transferred for expression.

The desired antibody may be produced in a cell culture or in a transgenic animal. A suitable transgenic animal may be obtained according to standard methods which include micro injecting into eggs the first and second DNA constructs placed under suitable control sequences transferring the so prepared eggs into appropriate pseudo-pregnant females and selecting a descendant expressing the desired antibody.

When the antibody chains are produced in a cell culture, the DNA constructs must first be inserted into either a single expression vector or into two separate but compatible expression vectors, the latter possibility being preferred.

IL-17 binding molecules as defined above which have binding specificity for human IL-17, in particular antibodies which are capable of inhibiting the binding of IL- 17 to its receptor; and antibodies to IL-17 which are capable of inhibiting the activity of 1 nM (= 30 ng/ml) human IL-17 at a concentration of about 50 nM or less, about 20 nM or less, about 10 nM or less, about 5 nM or less, about 2 nM or less, or more preferably of about 1 nM or less of said molecule by 50%, said inhibitory activity is measured on IL-6 production induced by hu-IL-17 in human dermal fibroblasts, are herein referred to as Antibodies of the Disclosure.

The IL-17 binding molecules block the effects of IL-17 on its target cells and thus are indicated for use in the treatment of IL-17 mediated diseases and disorders. The disclosed IL-17 binding molecules are useful for the prophylaxis and treatment of IL-17 mediated diseases or medical conditions, e.g., inflammatory conditions, allergies and allergic conditions, hypersensitivity reactions, autoimmune diseases, severe infections, and organ or tissue transplant rejection.

The disclosed IL-17 binding molecules may be used for the treatment of recipients of heart, lung, combined heart- lung, liver, kidney, pancreatic, skin or corneal transplants, including allograft rejection or xenograft rejection, and for the prevention of graft- versus-host disease, such as following bone marrow transplant, and organ transplant associated arteriosclerosis. Treatment Regimens

The disclosed IL-17 binding molecules, e.g., an IL-17 antibody, such as AIN457, are useful for the treatment, prevention, or amelioration of vasculitis, e.g., inflammatory large vessel vasculitis (e.g., GCA [i.e., isolated GCA and GCA associated with PMR]), and PMR [i.e., isolated PMR and PMR associated with GCA)]. Examples of vasculitis include, e.g., Behcet's Disease, Buerger's disease (thromboangiitis obliterans), Churg- Strauss syndrome (allergic granulomatosis and allergic angiitis), cryoglobulinemia, giant cell arteritis (GCA), Henoch-Schonlein purpura, hypersensitivity vasculitis, Kawasaki disease (mucocutaneous lymph node syndrome), microscopic polyangiitis (PA), polyarteritis nodosa, rheumatoid vasculitis, Takayasu's arteritis, Wegener's

granulomatosis, and polymyalgia rheumatica (PMR), Blau's syndrome, primary systemic vasculitis, essential cryoglobulinemic vasculitis, and urticarial vasculitis.

The IL-17 binding molecules, e.g., an IL-17 antibody, such as AIN457, may be used in vitro, ex vivo, or incorporated into pharmaceutical compositions and administered to individuals (e.g., human subjects) in vivo to treat, ameliorate, or prevent, e.g., PMR (either isolated PMR or PMR associated with GCA) and GCA (either isolated GCA or GCA associated with PMR). A pharmaceutical composition will be formulated to be compatible with its intended route of administration (e.g., oral compositions generally include an inert diluent or an edible carrier). Other nonlimiting examples of routes of administration include parenteral (e.g., intravenous), intradermal, subcutaneous, oral (e.g., inhalation), transdermal (topical), transmucosal, and rectal administration. The pharmaceutical compositions compatible with each intended route are well known in the art.

The IL-17 binding molecules, e.g., an IL-17 antibody, such as AIN457, may be used as a pharmaceutical composition when combined with a pharmaceutically

acceptable carrier. Such a composition may contain, in addition to an IL-17 binding molecule, carriers, various diluents, fillers, salts, buffers, stabilizers, solubilizers, and other materials well known in the art. The characteristics of the carrier will depend on the route of administration. The pharmaceutical compositions for use in the disclosed methods may also contain additional therapeutic agents for treatment of the particular targeted disorder. For example, a pharmaceutical composition may also include anti-inflammatory agents. Such additional factors and/or agents may be included in the pharmaceutical composition to produce a synergistic effect with the IL-17 binding molecules, or to minimize side effects caused by the IL-17 binding molecules.

The pharmaceutical composition of the disclosure may be in the form of a liposome in which the IL-17 binding molecule is combined, in addition to other pharmaceutically acceptable carriers, with amphipathic agents such as lipids that exist in aggregated form as micelles, insoluble monolayers, liquid crystals, or lamellar layers in aqueous solution. Suitable lipids for liposomal formulation include, without limitation, monoglycerides, diglycerides, sulfatides, lysolecithin, phospholipids, saponin, bile acids, etc.

In practicing the method of treatment or use of the present disclosure, a therapeutically effective amount of an IL-17 binding molecule is administered to a subject, e.g., a mammal (e.g., a human). An IL-17 binding molecule may be

administered in accordance with the method of the disclosure either alone or in combination with other therapies, such as, e.g., in combination with additional therapies for inflammation, e.g., Illaris® (canakinumab, ACZ885). When coadministered with one or more agents, an IL-17 binding molecule may be administered either simultaneously with the other agent, or sequentially. If administered sequentially, the attending physician will decide on the appropriate sequence of administering the IL-17 binding molecule in combination with other agents.

When a therapeutically effective amount of an IL-17 binding molecule is administered orally, the binding agent will be in the form of a tablet, capsule, powder, solution or elixir. When administered in tablet form, the pharmaceutical composition of the disclosure may additionally contain a solid carrier such as a gelatin or an adjuvant. When administered in liquid form, a liquid carrier such as water, petroleum, oils of animal or plant origin such as peanut oil (exercising caution in relation to peanut allergies), mineral oil, soybean oil, or sesame oil, or synthetic oils may be added. The liquid form of the pharmaceutical composition may further contain physiological saline solution, dextrose or other saccharide solution, or glycols such as ethylene glycol, propylene glycol, or polyethylene glycol.

When a therapeutically effective amount of an IL-17 binding molecule is administered by intravenous, cutaneous or subcutaneous injection, the IL-17 binding molecule will be in the form of a pyrogen-free, parenterally acceptable solution. A pharmaceutical composition for intravenous, cutaneous, or subcutaneous injection may contain, in addition to the IL-17 binding molecule, an isotonic vehicle such as sodium chloride injection, Ringer's injection, dextrose injection, dextrose and sodium chloride injection, lactated Ringer's injection, or other vehicle as known in the art.

Pharmaceutical compositions for use in the disclosed methods may be

manufactured in conventional manner. In one embodiment, the pharmaceutical composition is preferably provided in lyophilized form. For immediate administration it is dissolved in a suitable aqueous carrier, for example sterile water for injection or sterile buffered physiological saline. If it is considered desirable to make up a solution of larger volume for administration by infusion rather than a bolus injection, it is advantageous to incorporate human serum albumin or the patient's own heparinised blood into the saline at the time of formulation. The presence of an excess of such physiologically inert protein prevents loss of antibody by adsorption onto the walls of the container and tubing used with the infusion solution. If albumin is used, a suitable concentration is from 0.5 to 4.5% by weight of the saline solution. Other formulations comprise liquid or lyophilized formulation.

The appropriate dosage will, of course, vary depending upon, for example, the particular IL-17 binding molecule to be employed, the host, the mode of administration and the nature and severity of the condition being treated, and on the nature of prior treatments that the patient has undergone. Ultimately, the attending physician will decide the amount of the IL-17 binding molecule with which to treat each individual subject. In some embodiments, the attending physician may administer low doses of the IL-17 binding molecule and observe the subject's response. In other embodiments, the initial dose(s) of IL-17 binding molecule administered to a subject are high, and then are titrated downward until signs of relapse occur. Larger doses of the IL-17 binding molecule may be administered until the optimal therapeutic effect is obtained for the subject, and at that point the dosage is not generally increased further.

An IL-17 binding molecule is conveniently administered parenterally,

intravenously, e.g. into the antecubital or other peripheral vein, intramuscularly, or subcutaneously.

In prophylactic use, satisfactory results are generally indicated to be obtained at dosages from about 0.05 mg to about about 10 mg per kilogram body weight, more, usually from about 0.1 mg to about 10 mg per kilogram body weight. The frequency of dosing for prophylactic uses will normally be in the range from about once per week up to about once every three months, more usually in the range from about once every 2 weeks up to about once every 10 weeks, e.g., once every four to eight weeks. A prophylactic treatment typically comprises administering the IL-17 binding molecule once per month to once every two to three months, or less frequently.

In some embodiments, the IL-17 binding molecules are administered as a single dose infusion (e.g., a single dose infusion of about 1 mg/kg, about 3 mg/kg, about 5 mg/kg, about 10 mg/kg, or about 20 mg/kg) or as multi-dose infusions, e.g., two, three, four, five, or more doses of about 1 mg/kg, about 3 mg/kg, about 4 mg/kg, about 5 mg/kg, about 10 mg/kg or about 20 mg/kg are administered two, three, four, five, or more weeks apart. In another embodiment, an IL-17 binding molecule is administered s.c. weekly, every other week, or monthly at a dosage of about 25 mg, about 75 mg, about 150 mg, about 300 mg or about 500 mg. In one embodiment, the IL-17 binding molecule is administered at about 300 mg s.c. weekly for three weeks, about 300 mg s.c at baseline and week two, or about 150 mg s.c. at baseline and week two. In other embodiments, the IL-17 binding molecule is administered at about 150 mg s.c. every four weeks, or about 300 mg s.c. every two weeks, or about 300 mg s.c. every four weeks (monthly). In other embodiments, the IL-17 binding molecule is administered at about 300 mg s.c. at baseline (day zero), week one and week two two then every two weeks; 300 mg s.c at baseline (day zero) and week two, then every four weeks (monthly); or about 150 mg s.c. at baseline (day zero) and week two, then every four weeks.

In one embodiment, the IL-17 binding molecule is administered as a single dose intravenous infusion of about 1 to about 10 mg/kg, or as a subcutaneous injection of up to about 300 mg. The infusion or subcutaneous injection can be repeated as frequently as once or twice per week, or as infrequently as every six months, depending on the response of symptoms, signs, and laboratory tests such as the sedimentation rate.

In another embodiment, the IL-17 binding molecule is administered

subcutaneously as a about 25 mg, about 75 mg, about 150 mg, about 300 mg dose fixed daily, weekly, or monthly.

In another embodiment, the IL-17 binding molecule is administered intravenously up to about 10 mg/kg weekly to monthly.

In another embodiment, the IL-17 binding molecule is administered as a single dose intravenous infusion of 3 mg/kg.

The duration of intravenous (i.v.) therapy using a pharmaceutical composition of the present disclosure will vary, depending on the severity of the disease being treated and the condition and personal response of each individual patient. Also contemplated is subcutaneous (s.c.) therapy using a pharmaceutical composition of the present disclosure. The attending physician will decide on the appropriate duration of i.v. or s.c. therapy, or therapy with a small molecule, and the timing of administration of the therapy, using the pharmaceutical composition of the present disclosure.

The IL-17 binding molecules of the present disclosure are expected to exhibit one or more of the uses or biological activities (including those associated with assays cited herein) identified herein. Uses or activities described for the IL-17 binding molecules may be provided by administration or use of such IL-17 binding molecules or by administration or use of polynucleotides encoding such IL-17 binding molecules (such as, for example, in gene therapies or vectors suitable for introduction of DNA).

The disclosed IL-17 binding molecules, e.g., an IL-17 antibody, such as AIN457, are additionally useful for the treatment, prevention, or amelioration of IL-17 mediated diseases and disorders, e.g., diseases associated with increased or aberrant IL-17 signal. Such disorders may include, e.g., Periodic Fever Syndromes: Familial Mediterranean Fever (FMF), Tumor Necrosis Factor Receptor Associated Periodic Syndrome (TRAPS), Hyperimmunoglobulin D syndrome (HIDS), also called Mevalonate Kinase Associated Periodic Fever Syndrome, Familial Cold auto inflammatory syndrome and Periodic fever, Aphthous-stomatitis, Pharyngitis, Adenitis (PFAPA) Syndrome, anti-synthetase syndrome, Macrophage activation syndrome MAS, Behcet Disease, Blau's syndrome, PAPA syndrome, Schnizler's syndrome, Sweet's syndrome, Henoch-Schoenlein purpura, primary systemic vasculitis, Kawasaki disease (mucocutaneous lymph node syndrome), Takayasu arteritis, Polyarteritis nodosa, Essential cryoglobulinemic vasculitis,

microscopic polyangiitis (MP A) and Churg-Strauss syndrome (CSS), urticarial vasculitis, sarcoidosis, pemphygus, rheumatic fever, fibromyalgia, ankylosing spondylitis,

Alzheimer disease, amyloidosis, secondary amyloidosis and adult onset Still disease (AOSD), HLA-B27 associated diseases, such as psoriatica, spondylitis ankylosans, Morbus Reiter and enteropathic arthritis, Juvenile rheumatoid arthritis, adult rheumatoid arthritis, Muckle Wells Syndrome, transplantation and tissue/cell/skin grafting, multiple myeloma, multiple sclerosis, Lupus erythematosus, Type 1 diabetes, Type II diabetes, sarcoidosis, scleritis, cardiovascular disease, histiocytosis, dry eye, fungal infections (e.g., invasive infections caused by aspergillosis and Candida), bacterial infections, viral infections, e.g., hematogenic osteomyelitis, infectious arthritis, tuberculotic arthritis.

Additional disorders treatable by the disclosed IL-17 binding molecules include tuberculosis, Hansen's disease (leprosy), histoplasmosis, aspergillosis, blastomycosis, coccidiomycosis, cryptococcosis, cat-scratch disease (i.e., Bartonella infection),

Pneumocystic pneumonia, Whipple's disease, Crohn's disease, Histiocytosis X

(comprising Langerhans cell histiocytosis, juvenile xanthogranuloma, hemophagocytic lymphohistiocytosis, Niemann-Pick disease, sea-blue histiocyte syndrome, acute monocytic leukemia, malignant histiocytosis, and Erdheim-Chester disease), Chronic grandulatous disease (e.g., NADPH oxidase deficiency), Granulomatous drug reactions, brain injury, ischemia and reperfusion, Celiac disease (CD), obesity, necrosis (either separately or accompanying septic shock), Cystic Fibrosis, Urogenital Diseases and neoplasms, Pre-eclampsia, Hepatitis B/C, Parasitic diseases, Chronic obstructive pulmonary disease (COPD), Acrodermatitis halopeau, Histocytosis X, and Ozone mediated neutrophila

Futher provided herein is an IL-17 binding molecule for use in the treatment of vasculitis, wherein said IL-17 binding molecule comprises

c) an immunoglobulin V_H domain comprising the amino acid sequence set forth as SEQ ID NO: 8 and an immunoglobulin V_L domain comprising the amino acid sequence set forth as SEQ ID NO: 10; d) an immunoglobulin V_H domain comprising the hypervariable regions set forth as SEQ ID NO: l, SEQ ID NO:2, and SEQ ID NO:3;

f) an immunoglobulin V_H domain comprising the hypervariable regions set forth as SEQ ID NO:l l, SEQ ID NO: 12 and SEQ ID NO: 13; g) an immunoglobulin V_H domain comprising the hypervariable regions set forth as SEQ ID NO: l, SEQ ID NO:2, and SEQ ID NO:3 and an immunoglobulin V_L domain comprising the hypervariable regions set forth as SEQ ID NO:4, SEQ ID NO:5 and SEQ ID NO:6; or

a) selecting a subject on the basis of the subject having vasculitis; and

b) providing said subject with a therapeutically effective amount of an IL-17 binding molecule, wherein said IL-17 binding molecule comprises

iii) an immunoglobulin V_H domain comprising the amino acid sequence set forth as SEQ ID NO: 8 and an immunoglobulin V_L domain comprising the amino acid sequence set forth as SEQ ID NO: 10; iv) an immunoglobulin V_H domain comprising the hypervariable regions set forth as SEQ ID NO: l, SEQ ID NO:2, and SEQ ID NO:3; v) an immunoglobulin V_L domain comprising the hypervariable regions set forth as SEQ ID NO:4, SEQ ID NO:5 and SEQ ID NO:6; vi) an immunoglobulin V_H domain comprising the hypervariable regions set forth as SEQ ID NO: 11, SEQ ID NO: 12 and SEQ ID NO: 13;

i) an immunoglobulin heavy chain variable domain (V_H) comprising the amino acid sequence set forth as SEQ ID NO:8;

v) an immunoglobulin V_L domain comprising the hypervariable regions set forth as SEQ ID NO:4, SEQ ID NO:5 and SEQ ID NO:6; vi) an immunoglobulin V_H domain comprising the hypervariable regions set forth as SEQ ID NO:l l, SEQ ID NO: 12 and SEQ ID NO: 13;

said use comprising

a) selecting a subject on the basis of the subject having vasculitis; and

Disclosed herein is also a method of regulating the dose and/or frequency of providing an IL-17 binding molecule to a subject having vasculitis comprising: (a) measuring the concentration of one of the following in blood or tissue of the subject: free IL-17 protein, IL-17 mRNA, and/or Thl7 cells; and (b) increasing the dose and/or frequency of the IL-17 binding molecule if the concentration is below a predetermined value and reducing the dose and/or frequency of the IL-17 binding molecule if the concentration is above a predetermined value, thereby regulating the dose and/or frequency of providing the IL-17 binding molecule to the subject.

In some embodiments of the above methods, IL-17 binding molecules and uses, the control value is obtained from a derived from a person known not to have vasculitis. In some embodiments of the disclosed methods, the IL-17 binding molecule is AIN457 (secukinumab). In further embodiments, the vasculitis is autoimmune vasculitis or a large vessel vasculitis. In further embodiments, the vasculitis is isolated PMR. In further embodiments, the vasculitis is PMR associated with GCA. In further embodiments, the vasculitis is isolated GCA. In further embodiments, the vasculitis is GCA associated with PMR. In one embodiment, an additional agent for use in the disclosed methods or uses, or to be co-administered with a disclosed IL-17 binding molecule, is selected from the group consisting of prednisone, methotrexate, prednisolone, methylprednisone, methylprednisolone and deflazacort. Combination Therapies for the Treatment of PMR and GCA

For the treatment of PMR and GCA, the IL-17 binding molecules may be administered as the sole active ingredient or in conjunction with, e.g., as an adjuvant to or in combination to, other agents, e.g., immunosuppressive or immunomodulating agents or other anti-inflammatory agents. For example, the IL-17 binding molecules may be used in combination with corticosteroids such as prednisone, prednisolone, methylprednisone, methylprednisolone and deflazacort; glucocorticoids, DMARD, e.g., Gold salts, sulphasalazine, antimalarias, aspirin, NSAIDs, methotrexate, D-penicillamine,

azathioprine, mycophenolic acid, cyclosporine A, tacrolimus, sirolimus, minocycline, leflunomide, glococorticoids; a calcineurin inhibitor, e.g., cyclosporin A or FK 506; a modulator of lymphocyte recirculation, e.g., FTY720 and FTY720 analogs; an mTOR inhibitor, e.g., rapamycin, 40-O-(2-hydroxyethyl)-rapamycin, CCI779, Humira®,

ABT578, AP23573 or TAFA-93; an ascomycin having immuno-suppressive properties, e.g., ABT-281, ASM981; corticosteroids such as prednisone, prednisolone,

methylprednisone, methylprednisolone and deflazacort; cyclo-phos-phamide; alendronate, alfacalcidol (1 -alpha OH vitamin D), hydroxychloroquine, abatacept, azathioprene;

methotrexate; leflunomide; mizoribine; mycophenolic acid; mycophenolate mofetil; anti- thymocyte globulin; cyclophosphamide; filgrastim; 15-deoxyspergualine or an

immunosuppressive homologue, analogue or derivative thereof; immunosuppressive monoclonal antibodies, e.g., monoclonal antibodies to leukocyte receptors, e.g., MHC, CD2, CD3, CD4, CD7, CD8, CD25, CD28, CD40. CD45, CD58, CD80, CD86 or their ligands; monoclonal antibodies (e.g., agonistic or antagonistic antibodies) to cytokines such as IL-6, IL-15, LIF, IL-10, IFN γ, TNFa, IL-23, IL-Ι β, IL-2, IL-12, IL-4, IL-8, IL- 21, IL-18, IL-26, OSM, and TFG beta ,as well as other IL-1, IL-17 and TNF family members, other immunomodulatory compounds, e.g., a recombinant binding molecule having at least a portion of the extracellular domain of CTLA4 or a mutant thereof, e.g., at least extracellular portion of CTLA4 or a mutant thereof joined to a non-CTLA4 protein sequence, e.g. CTLA4Ig (for ex. designated ATCC 68629) or a mutant thereof, e.g., LEA29Y; adhesion molecule inhibitors, e.g. LFA-1 antagonists, ICAM-1 or -3 antagonists, VCAM-4 antagonists or VLA-4 antagonists; or a chemotherapeutic agent, e.g. paclitaxel, gemcitabine, cisplatinum, doxorubicin or 5-fluorouracil; TNF blockers, e.g., an anti-TNF agent, e.g., monoclonal antibodies to TNF, e.g. infliximab, adalimumab,

Humira®, CDP870, or receptor constructs to TNF-RI or TNF-RII, e.g., Etanercept, PEG-

TNF-RI; blockers of proinflammatory cytokines, an IL-1 blockers, e.g., Anakinra or IL-1 trap, a calcineurin inhibitor, a PKC inhibitor, e.g., sotrastaurin (AEB071), JAK1 and JAK2 inhibitors, pan JAK inhibitors, e.g., tetracyclic pyridone 6 (P6), 325, PF-956980, AAL160, , solumedrol, IL-6 blockers (e.g., tocilizumab); chemokines blockers, e.g., inhibitors or activators of proteases, e.g. metalloproteases, anti-CD20 antibodies, an anti- infectious agent, bone calcilytics, bone anabolics, and bone anti-resoptives, e.g., an anti- sclerostin antibody, such as BPS804, AMG785, AMG167, LY254156, a bisphosphonate such aldronate or zoledonic acid, e.g., Zometa®, PTH and PTH/PTHrP fragments,

ActRIIA Fc-fusion proteins, anti-RANKL antibodies (e.g., Denosumab), Forteo® / Forsteo® (rhPTH (1-34), teriparatide), an injectable version of the human full-length peptide (PTH (1-84), Preos®/Preotact®, BA058 (BIM44058), a hPTH (1-31) amide analog (e.g., Ostabolin C), BN003, a PTH releaser (e.g., ronacaleret hydrochloride (SB- 751689)), ronacalert, an activin type IIA receptor-Fc fusion protein (e.g., ACE-011), Denosumab (AMG 162), calcium and Vitamin D.

Other agents for use in combination with the disclosed IL-17 binding molecules, e.g., IL-17 antibodies, e.g., AIN457, include MTI-MMP inhibitors (such as those disclosed in WO 10/069074, which is incorporated by reference herein in its entirety), modulators of MIF (such as those disclosed in WO 10/065491, which is incorporated by reference herein in its entirety), complement modulating agents (such as those disclosed in WO 10/056399, which is incorporated by reference herein in its entirety), agents that inhibit the interactions of PF4 and RANTES (such as those disclosed in WO 10/042548 (US20100093636), which are incorporated by reference herein in their entirety), agents that inhibit MIF binding to CXCR2 and CXCR4 and/or inhibit MIF-activation of CxCR2 and CXCR4 and/or inhibit the ability of MIF to form a homomultimer (such as those disclosed in WO09/117710 and WO09/117706, which are incorporated by reference herein in their entirety), and phenazine derivatives (such as those disclosed in WO09/042114, which is incorporated by reference herein in its entirety). Other agents include anti IL-Ιβ antibodies or IL-Ιβ receptor antagonists, , e.g., Illaris® (canakinumab, ACZ885) or Anakinra.

In accordance with the foregoing the present disclosure provides in a yet further aspect: a method or use as defined herein comprising co-administration, e.g.,

concomitantly or in sequence (sequentially), of a therapeutically effective amount of an IL-17 binding molecule, e.g., an IL-17 antibody, e.g., AIN457, and at least one additional agent, said additional agent being a immuno-suppressive / immunomodulatory, antiinflammatory chemotherapeutic or anti-infectious drug, e.g., as indicated above. In a preferred embodiment, the additional agent for use in the disclosed methods or uses, or to be co-administered with a disclosed IL-17 binding molecule, is selected from the group consisting of prednisone, methotrexate, prednisolone, methylprednisone,

methylprednisolone and deflazacort.

In accordance with the foregoing the present disclosure provides in a yet further aspect: a therapeutic combination, e.g. a kit, comprising of a therapeutically effective amount of a) an IL-17 binding molecule, e.g., an IL-17 antibody, e.g, AIN457, and b) at least one additional agent selected from a immuno-suppressive / immunomodulatory, anti-inflammatory chemotherapeutic or anti-infectious drug, e.g., as indicated above. The kit may comprise instructions for its administration.

Where an IL-17 binding molecule is administered in conjunction with other immuno-suppressive / immunomodulatory, anti-inflammatory chemotherapeutic or anti- infectious therapy, dosages of the co-administered additional agent will of course vary depending on the type of co-drug employed, e.g., whether it is a steroid, DMARD, anti- TNF, IL-1 blocker or others, on the specific additional agent, on the condition being treated, and so forth.

References of Interest

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Examples

Example 1: The AIN 457 Antibody Binds Human IL-17 with High Affinity and Neutralizes Human IL-6

Affmintv of AIN457 for Human IL-17

Surface plasmon resonance measurements using the optical biosensor BIAcore®

2000 (BIAcore AB, Upsalla, Sweden) was used to determine kinetic binding parameters and levels of crossreactivity for AIN457 (secukinumab) (disclosed in US20090280131). After combining the titration series the average values from twelve sensorgrams are:

^■ k_on= (4.1 ± 0.1) xl0⁵ 1/M s;

^■ k_off= (3.8 ± 0.5) xl0^~4 1/s;

^■ K_D= 122 ± 22 pM. (Table 2).

Table 2. Kinetic constants for the 1:1 binding of rec human IL-17 to AIN457

Cone [nM] kon [1/Ms] koff [1/s] KD [M] Exp. IL-314

2 3.31E+05 3.36E-05 1.02E-10 Run 1

4 1.28E+05 3.78E-05 2.95E-10

8 3.79E+05 1.86E-05 4.90E-1 1

12 3.60E+05 3.00E-05 8.33E-1 1

16 3.52E+05 5.70E-05 1.62E-10

20 3.52E+05 4.15E-05 1.18E-10

2 1.23E+06 1.97E-05 1.60E-1 1 Run 2

4 4.1 1E+05 1.20E-05 2.92E-1 1

8 3.78E+05 4.54E-05 1.20E-10

12 3.46E+05 5.13E-05 1.48E-10

16 3.17E+05 5.95E-05 1.88E-10

20 3.34E+05 5.01E-05 1.50E-10

Mean 4.10E+05 3.80E-05 1.22E-10 n=12

SEM 7.73E+04 4.51E-06 2.21E-1 1

Mean K_D calculated from individual entries (vertically), rather than by applying the equation

Neutralizing activity of culture supernatants

As disclosed in US20090280131, AIN457 (secukinumab) neutralizes human IL-6 production induced by huIL-17 in human dermal fibroblast with an IC₅₀ of 2.1±0.1 nM at a concentration of 1.87 nM huIL-17. Thus, AIN457 neutralizes IL-17 antigen at a molar ratio of about 1 : 1. The potency of AIN457 is comparable to that of huIL-17R/Fc and superior to that of a commercially available mouse anti-huIL-17 MAb (MAB 317 R&D System). More complete inhibition is observed with AIN457 than with IL-17R/Fc. This high binding affinity makes the AIN457 antibody particularly suitable for therapeutic applications as disclosed herein.

Example 2: Treatment of Subjects Having PMR with AIN457 Objectives:

The primary purpose of this study is to determine whether a single 3 mg/kg intravenous dose of AIN457 (secukinumab) or ACZ885 (canakinumab) effectively reduces the initial signs and symptoms of PMR in untreated subjects as measured by the polymyalgia rheumatica activity score (PMR-AS) (Leeb and Bird (2004) Ann. Rheum. Dis. 63: 1279-1283). Secondary aims of this study are to investigate the duration of an observed clinical response to single dose treatment and the safety and tolerance of said treatment in this patient population.

Design:

The study design is shown in Figure 1. The study is a two-week, single-blinded, double-dummy, randomized, active-controlled, parallel group design, with a follow-up period up to a total study. The first part of the study will consist of a 7-day screening period, a baseline visit and an initial treatment period of 2 weeks. Patients will be randomized in a ratio of 1 : 1 : 1 to receive either a single intravenous dose on Day 1 of AIN457 (secukinumab) 3 mg/kg or ACZ885 (canakinumab) 3 mg/kg or daily oral doses of prednisone 20mg.

At Day 15, the randomized treatment will be unblinded to the investigator (although not to the blinded evaluator). After unblinding, the patient will be assessed against the following criteria for partial and complete response.

A partial responder is defined as a patient with all of the following:

• >50% reduction in patient global assessment VAS compared with baseline

• Morning stiffness < 60 min

A complete responder is defined as a patient with all of the following:

• >70% reduction in patient global assessment VAS compared with baseline

• Morning stiffness < 30 min

• CRP < 1.0 mg/dl and/or ESR < 30 mm/ 1st hr

Patients who do not meet the criteria of partial response at Day 15 (i.e. non- responders) and who received prednisone on Day 1 will be discontinued from the study. Non-responders who received AIN457 or ACZ885 on Day 1 will start the non-responder cycle (visit 21) receiving a 20mg dose of prednisone or prednisolone followed by the standard steroid tapering.

The remaining patients who meet criteria as either partial or complete treatment responders will continue in the study. Responders in the steroid treatment arm will taper their steroids according to standard of care.

During the follow up period, patients will be observed at regular intervals for evidence of disease flare. Disease flare is defined as (patients must have all of these 3 features):

• Return of typical proximal muscle pain

• Morning stiffness > 60 min

^■ CRP > 1.0 mg/dl and/or ESR > 30 mm/lst hr

Patients with confirmed disease flare in the biologies arms will be eligible for one re-dose of the biologic previously received at study start, with any further flare of their disease resulting in a change to standard of care steroid treatment. Patients with confirmed disease flare during a steroid taper will be uptitrated according to the standard of care.

Patients will have a follow up-period of 154 days (starting on D 15) or 4 months (112 days) after their last biologic dosing (AIN457 or ACZ885), whichever is the greater. If a patient flares more than 3 times during this follow-up period then the patient will be discontinued from the study.

Inclusion criteria:

Patients must meet all of the following features:

^■ Patients≥ 50 and≤ 85 years of

^■ CRP > 1.0 mg/dl OR ESR > 30 mm/hr

^■ New bilateral shoulder and/or hip pain

^■ Early Morning stiffness > 60 min

^■ Duration of illness > 1 week

^■ A negative 5 U PPD skin test (≤ 5 mm induration) at screening

Exclusion criteria

^■ Active infection or current use of antibiotics

^■ Known HIV, HCV or HBV

^■ Previous therapy with methotrexate or other immunosuppressive agents within three months prior to baseline

^■ History of malignancy other than a successfully treated non-metastatic cutaneous squamous cell or basal cell carcinoma and/or localized carcinoma in situ of the cervix within five years prior to study entry

^■ Presence of rheumatoid arthritis or other inflammatory arthritic processes

(features of GCA, spondyloarthropathies), connective tissue disease, drug-induced myopathies, endocrine disorders, neurological disorders, chronic pain syndromes, as assessed by base line screening including TSH, CK, RF, CCP, ANA, serum protein electrophoresis, urinalysis.

Investigational Drug:

This is a double dummy study dosing (vials will be reconstituted to an i.v.

solution of 3mg/kg to be administered as an infusion) of AIN457 150 mg powder for i.v. infusion in vial or ACZ885 150 mg powder for i.v. infusion in vial. Glucose 5% solution for i.v. infusion will be used as placebo matching AIN457 and ACZ885 solutions. Comparator drug:

Prednisone 20mg capsules and placebo capsules. The starting dose of 20 mg/day prednisone is chosen based on the current standard of care dosing range of 10-20 mg/day for the initial treatment of PMR (Salvarani et al, supra).

Duration of study and treatment:

Patient will have a maximum screening period of 7 days. Randomization will occur at Dl for a single blind dosing period of 15 days followed by a follow up-period of 154 days, or 4 months (112 days) after their last biologic dose, whichever is greater, and followed by unblinded re-dosing in the case of a disease flare.

Efficacy assessments

• Polymyalgia Rheumatica (PMR) Activity Score (PMR- AS) components:

• CRP (mg/dl)

• Morning stiffness (min)

• Ability to elevate upper limbs (scored on a 4-point scale; 3 = none, 2 = below shoulder girdle, 1

= up to shoulder girdle, 0 = above shoulder girdle)

• Patient pain VAS (mm)

• Patient global assessment VAS (mm)

• Physician global assessment VAS (mm)

• Health Assessment Questionnaire-Disability Index (HAQ-DI)

• Short Form-36 (SF-36)

• Erythrocyte sedimentation rate (ESR)

Note: To improve enrollment, the exclusion criteria were modified to allow patients previously treated with steroids into the study if they have been withdrawn from steroids at least 3 months prior the screening visit. Previously, the protocol required that patients not have had any prior treatment for PMR. Day 15 Results:

To date, 11 patients with untreated PMR have been enrolled in this ongoing study, including one patient that was discontinued due to a pharmacy error (no treatment given). These randomized patients received a single dose ACZ885 (n = 4), AIN457 (n = 3) or daily treatment with prednisone (n = 3). At day 15 the patient's treatment allocation is unblinded. The primary outcome measure for this study is the Polymyalgia Rheumatica Activity Score (PMR-AS; Leeb BF, Bird HA (2004) A disease activity score for polymyalgia rheumatic. Ann Rheum Dis;63: 1279- 1283) recorded at base line and again at Day 15 of treatment. This score is a weighted composite of 5 separate disease activity parameters, including the serum C-reactive protein, visual analog scales for patient perception of pain and for the physician's global assessment, duration of morning stiffness, and the ability to elevate the arms as follows:

Calculation of disease activity: Polymyalgia Rheumatica- Activity Score (PMR-AS)

CRP (mg/dl) + VASpain (0-10) + VASpga (0-10) + [MST (min) x 0.1] + EUL (3-0)

• CRP (mg/dl)

• VASpain = Patient visual analog scale pain

• VASpga = Physician's visual analog scale global assessment

• MST = Morning stiffness (min)

• EUL = Elevation of upper limbs (3 = none, 2 = below shoulder girdle, 1 = up to shoulder girdle, 0 = above shoulder girdle)

The overall mean percentage change from baseline (estimated from a model) for each of the 3 treatment groups are as follows: Prednisone 94%, ACZ885 42%, AIN457 43%. Further detail of the individual patient responses to treatment are shown in Figure 2. In the prednisone treatment arm, all patients showed a marked reduction in the PMR- AS compared to baseline measurements. In the ACZ885 treatment arm, 2 of the 4 patients showed reduction of the PMR-AS. In the AIN457 treatment arm, 1 patient out of 3 showed a reduction in the PMR-AS. Further detail of treatment effects is revealed from the PMR-AS components (Figure 3). In the prednisone treatment arm, consistent reductions in the different PMR- AS components are noted in the individual patients with the exception of one patient's CRP value. In the biologies treatment arms, there is more heterogeneity in the responses of the various PMR-AS components. For example, consistent marked reductions in serum C-reactive protein levels are seen in the 3 AIN457-treated patients, but mixed responses in the remainder of the PMR-AS components. In the ACZ885 treated patients, variability is observed in all of the different PMR-AS components, with marked reductions in some components and minimal or no reductions in others.

Claims

WHAT IS CLAIMED IS:

1. A method of treating vasculitis in a subject comprising, administering a therapeutically effective amount of an IL-17 binding molecule to a subject in need thereof, wherein said IL-17 binding molecule comprises

2. An IL-17 binding molecule for use in the treatment of vasculitis, wherein said IL-17 binding molecule comprises

a) an immunoglobulin heavy chain variable domain (V_H) comprising the amino acid sequence set forth as SEQ ID NO:8; b) an immunoglobulin light chain variable domain (V_L) comprising the amino acid sequence set forth as SEQ ID NO: 10;

3. Use of an IL-17 binding molecule for the preparation of a medicament for the treatment of vasculitis, wherein said IL-17 binding molecule comprises

d) an immunoglobulin V_H domain comprising the hypervariable regions set forth as SEQ ID NO: l, SEQ ID NO:2, and SEQ ID NO:3; e) an immunoglobulin V_L domain comprising the hypervariable regions set forth as SEQ ID NO:4, SEQ ID NO:5 and SEQ ID NO:6;

4. The method of claim 1, the IL-17 binding molecule of claim 2 or the use of claim 3, wherein said IL-17 binding molecule is AIN457 (secukinumab).

5. The method, the IL-17 binding molecule or the use of claim 4, wherein said vasculitis is an autoimmune vasculitis or a large vessel vasculitis.

6. The method, the IL-17 binding molecule or the use of claim 4, wherein said vasculitis is isolated PMR.

7. The method, the IL-17 binding molecule or the use of claim 4, wherein said vasculitis is PMR associated with GCA.

8. The method, the IL-17 binding molecule or the use of claim 4, wherein said vasculitis is isolated GCA.

9. The method, the IL-17 binding molecule or the use of claim 4, wherein said vasculitis is GCA associated with PMR.

10. The method of claim 4 further comprising, administering an additional agent selected from the group consisting of prednisone, methotrexate, prednisolone, methylprednisone, methylprednisolone and deflazacort.

11. The use of claim 4 further comprising, an additional agent selected from the group consisting of prednisone, methotrexate, prednisolone, methylprednisone, methylprednisolone and deflazacort.

12. The IL-17 binding molecule of claim 4, wherein said IL-17 binding molecule is coadministered in combination with an additional agent selected from the group consisting of prednisone, methotrexate, prednisolone, methylprednisone, methylprednisolone and deflazacort.

13. A method of treating vasculitis in a subject in need thereof, comprising:

a) selecting a subject on the basis of the subject having vasculitis; and

vi) an immunoglobulin V_H domain comprising the hypervariable regions set forth as SEQ ID NO: 11, SEQ ID NO: 12 and SEQ ID NO: 13; vii) an immunoglobulin V_H domain comprising the hypervariable regions set forth as SEQ ID NO: l, SEQ ID NO:2, and SEQ ID NO:3 and an

immunoglobulin V_L domain comprising the hypervariable regions set forth as SEQ ID NO:4, SEQ ID NO:5 and SEQ ID NO:6; or

viii) an immunoglobulin V_H domain comprising the hypervariable regions set forth as SEQ ID NO: l 1, SEQ ID NO: 12 and SEQ ID NO: 13 and an immunoglobulin V_L domain comprising the hypervariable regions set forth as SEQ ID NO:4, SEQ ID NO:5 and SEQ ID NO:6,

wherein providing said a therapeutically effective amount of an IL-17 binding molecule to said subject results in treatment of vasculitis.

14. An IL-17 binding molecule for use in the treatment of vasculitis, wherein said IL-17 binding molecule comprises,

vii) an immunoglobulin V_H domain comprising the hypervariable regions set forth as SEQ ID NO: l, SEQ ID NO:2, and SEQ ID NO:3 and an immunoglobulin V_L domain comprising the hypervariable regions set forth as SEQ ID NO:4, SEQ ID NO:5 and SEQ ID NO:6; or viii) an immunoglobulin V_R domain comprising the hypervariable regions set forth as SEQ ID NO: 11, SEQ ID NO: 12 and SEQ ID NO: 13 and an

said use comprising

a) selecting a subject on the basis of the subject having vasculitis; and b) providing said subject with a therapeutically effective amount of said IL-17 binding molecule.

15. The method of claim 13 or the IL-17 binding molecule of claim 14, wherein said IL- 17 binding molecule is AIN457 (secukinumab).

16. The method or the IL-17 binding molecule of claim 15, wherein said vasculitis is autoimmune vasculitis or a large vessel vasculitis.

17. The method or the IL-17 binding molecule of claim 15, wherein said vasculitis is isolated PMR.

18. The method or the IL-17 binding molecule of claim 15, wherein said vasculitis is PMR associated with GCA.

19. The method or the IL-17 binding molecule of claim 15, wherein said vasculitis is isolated GCA.

20. The method or the IL-17 binding molecule of claim 15, wherein said vasculitis is GCA associated with PMR.

21. The method of claim 15 further comprising, administering an additional agent selected from the group consisting of prednisone, prednisolone, methylprednisone, methylprednisolone, methotrexate, and deflazacort.

22. The IL-17 binding molecule of claim 15, wherein said IL-17 binding molecule is provided in combination with an additional agent selected from the group consisting of prednisone, prednisolone, methylprednisone, methylprednisolone, methotrexate, and deflazacort.

23. A method of regulating the dose and/or frequency of providing an IL-17 binding molecule to a subject having vasculitis comprising:

(a) measuring the concentration of one of the following in blood or tissue of the subject: free IL-17 protein, IL-17 m NA, and/or Thl7 cells; and

(b) increasing the dose and/or frequency of the IL-17 binding molecule if the concentration is below a predetermined value and reducing the dose and/or frequency of the IL-17 binding molecule if the concentration is above a predetermined value, thereby regulating the dose and/or frequency of providing the IL-17 binding molecule to the subject.

24. An IL-17 binding molecule for use in the treatment of vasculitis in a subject, said use comprising:

(a) measuring the concentration of one of the following in blood or tissue of the subject: free IL-17 protein, IL-17 mRNA, and/or Thl7 cells; and

25. A method of selecting a subject having vasculitis for therapy with an IL-17 binding molecule comprising:

(a) measuring the concentration of one of the following in blood or tissue of the subject: free IL-17 protein (i.e., unbound by the IL-17 binding molecule), IL-17 mRNA, and/or Thl7 cells; and (b) selecting the subject for said therapy if the concentration exceed a control value, thereby selecting a subject having vasculitis for therapy with an IL-17 binding molecule.

26. The method of claim 23 or 25, or the IL-17 binding molecule of claim 24, wherein said IL-17 binding molecule is AIN457 (secukinumab).

27. The method or the IL-17 binding molecule of claim 26, wherein said vasculitis is an autoimmune vasculitis or a large vessel vasculitis.

28. The method or the IL-17 binding molecule of claim 26, wherein said vasculitis is isolated PMR.

29. The method or the IL-17 binding molecule of claim 26, wherein said vasculitis is PMR associated with GCA.

30. The method or the IL-17 binding molecule of claim 26, wherein said vasculitis is isolated GCA.

31. The method or the IL-17 binding molecule of claim 26, wherein said vasculitis is GCA associated with PMR.