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First-in-class medication

From Wikipedia, the free encyclopedia
Term for a groundbreaking pharmaceutical drug

Afirst-in-class medication is aprototype drug that uses a "new and unique mechanism of action" to treat a particular medical condition.[1] While theFood and Drug Administration'sCenter for Drug Evaluation and Research tracks first-in-class medications and reports on them annually, first-in-class is not considered a regulatory category. Although many first-in-class medications qualify asbreakthrough therapies,Regenerative Medicine Advanced Therapies and/ororphan drugs, first-in-class status itself has no regulatory effect.

Examples

[edit]
DrugClassTargeted conditionsYear approved

(FDA)

Year approved

(EMA)

Inotuzumab ozogamicin

(Besponsa)

Anti-CD22 monoclonalantibody-drug conjugateRelapsed or refractoryB cell precursoracute lymphoblastic leukemia[2]2017
Tagraxofusp

(Elzonris)

Interleukin 3-diphtheria toxinfusion protein targetingplasmacytoid dendritic cellsBlastic plasmacytoid dendritic cell neoplasm20182021
Midostaurin

(Rydapt)

Multi-targettyrosine kinase inhibitor not inhibited by the D816V cKit mutationSystemic mastocytosis,myelodysplastic syndrome,acute myeloid leukemia[3]20172017[4]
Teprotumumab

(Tepezza)

Anti-IGF-1Rmonoclonal antibodyGraves' ophthalmopathy[5]2020
Romosozumab

(Evenity)

Anti-sclerostinmonoclonal antibodyOsteoporosis[6]20192019
Ocrelizumab

(Ocrevus)

Anti-CD20monoclonal antibodyMultiple sclerosis[7]20172018
Ivosidenib

(Tibsovo)

Small molecule inhibitor ofisocitrate dehydrogenase 1Acute myeloid leukemia,cholangiocarcinoma[8]20182023
Bempedoic acid

(Nexletol)

Adenosine triphosphate-citrate lyase inhibitorHypercholesterolemia[9]20202020
Tafamidis

(Vyndaqel, Vyndamax)

Transthyretinchaperone (stabilizer)Familial amyloid polyneuropathy and othertransthyretin amyloidoses[10]20112019
Voxelotor

(Oxbryta)

Hemoglobin oxygen affinity modulatorSickle cell disease[11]2019
Lonafarnib

(Zokinvy)

Farnesyltransferase inhibitorHutchinson-Gilford progeria syndrome[12]20202022
Dupilumab

(Dupixent)

Interleukin-4 receptor alpha subunit inhibitorAsthma,atopic dermatitis,allergic diseases[13]2017
Lasmiditan

(Reyvow)

Selective5-HT1F serotonin receptor agonistMigraine[14]20192022
Tazemetostat

(Tazverik)

SelectiveEZH2 inhibitorEpithelioid sarcoma[15]2020
Tirzepatide

(Mounjaro)

GLP-1 andGIP activatoradulttype 2 diabetes[16]20222022

Controversy

[edit]

Safety

[edit]

By definition, a first-in-class drug does not have the safety evidence from analogous products that not-first-in-class drugs would have. However, a study investigatingrecalls and warnings in relation to first-in-class drugs approved between 1997 and 2012 byHealth Canada has found that first-in-class drugs actually have a more favourable benefit-to-harm ratio.[17]

Economics

[edit]

First-in-class drugs are often seen as commercially more attractive as they may tap into a market segment that has hitherto been underserved, but this may be illusory.[18] In fact, mostblockbuster drugs (drugs with annual sales revenues exceedingUS$1,000,000,000) were not first-in-class drugs.[18] The economic potential of a first-in-class drug, which is typically priced higher than later drugs in the same class, has been largely declining due to efforts byhealth insurers to restrict whatspecialty drugs are covered and prevent incumbency advantages.[19]

Costs

[edit]

A lower number of available therapeutic options correlates with higher prices.[20] In addition, many first-in-class medications arespecialty drugs andorphan drugs,[21] which means that manufacturers have to recoup development costs from a smaller market.[22] This raises ethical questions about the sustainability of the high prices on these costs.[23][24]

References

[edit]
  1. ^Lanthier, Michael; Miller, Kathleen L.; Nardinelli, Clark; Woodcock, Janet (2013-08-01)."An Improved Approach To Measuring Drug Innovation Finds Steady Rates Of First-In-Class Pharmaceuticals, 1987–2011".Health Affairs.32 (8):1433–1439.doi:10.1377/hlthaff.2012.0541.ISSN 0278-2715.PMID 23918488.[permanent dead link]
  2. ^"BESPONSA 1 mg powder for concentrate for solution for infusion - Summary of Product Characteristics (SmPC) - (emc)".www.medicines.org.uk. Retrieved2021-07-01.
  3. ^"Rydapt: Uses, Dosage, Side Effects, Warnings".Drugs.com. Retrieved2021-07-01.
  4. ^"Rydapt | European Medicines Agency".www.ema.europa.eu. Retrieved2024-01-16.
  5. ^Office of the Commissioner (2020-03-24)."FDA approves first treatment for thyroid eye disease".FDA. Retrieved2021-07-01.
  6. ^Center for Drug Evaluation and Research (2020-01-24)."New Drug Therapy Approvals 2019".FDA.
  7. ^"Ocrevus (ocrelizumab) Injection".www.accessdata.fda.gov. Retrieved2021-07-01.
  8. ^"Search Orphan Drug Designations and Approvals".www.accessdata.fda.gov. Retrieved2021-07-01.
  9. ^"DailyMed - NEXLETOL- bempedoic acid tablet, film coated".dailymed.nlm.nih.gov. Retrieved2021-07-01.
  10. ^"Tafamidis Monograph for Professionals".Drugs.com. Retrieved2021-07-01.
  11. ^"DailyMed - OXBRYTA- voxelotor tablet, film coated".dailymed.nlm.nih.gov. Retrieved2021-07-01.
  12. ^"DailyMed - ZOKINVY- lonafarnib capsule".dailymed.nlm.nih.gov. Retrieved2021-07-01.
  13. ^"DailyMed - DUPIXENT- dupilumab injection, solution".dailymed.nlm.nih.gov. Retrieved2021-07-01.
  14. ^"DailyMed - Search Results for Lasmiditan".dailymed.nlm.nih.gov. Retrieved2021-07-01.
  15. ^"Tazemetostat Monograph for Professionals".Drugs.com. Retrieved2021-07-01.
  16. ^"FDA Approves Novel, Dual-Targeted Treatment for Type 2 Diabetes".fda.gov. 13 May 2022. Retrieved2022-06-30.
  17. ^Lexchin, Joel (November 2016)."How Safe and Innovative Are First-in-Class Drugs Approved by Health Canada: A Cohort Study".Healthcare Policy.12 (2):65–75.ISSN 1715-6572.PMC 5221712.PMID 28032825.
  18. ^abSchulze, Ulrik; Ringel, Michael (2013-06-01)."What matters most in commercial success: first-in-class or best-in-class?".Nature Reviews Drug Discovery.12 (6):419–420.doi:10.1038/nrd4035.ISSN 1474-1784.PMID 23722339.S2CID 32258945.
  19. ^Longman, Roger (20 July 2015)."The Shrinking Value of Best-in-Class and First-in-Class Drugs".In Vivo by Informa Pharma Intelligence. Retrieved1 July 2021.
  20. ^Kwa, Michael C.; Tegtmeyer, Kyle; Welty, Leah J.; Raney, Sam G.; Luke, Markham C.; Xu, Shuai; Kong, Betty (2020-10-01)."The relationship between the number of available therapeutic options and government payer (medicare part D) spending on topical drug products".Archives of Dermatological Research.312 (8):559–565.doi:10.1007/s00403-020-02042-9.ISSN 1432-069X.PMID 32055932.S2CID 211111984.
  21. ^Chambers, James D.; Thorat, Teja; Wilkinson, Colby L.; Neumann, Peter J. (2017-08-01)."Drugs Cleared Through The FDA's Expedited Review Offer Greater Gains Than Drugs Approved By Conventional Process".Health Affairs.36 (8):1408–1415.doi:10.1377/hlthaff.2016.1541.ISSN 0278-2715.PMID 28784733.
  22. ^Lieberman, Steven M.; Ginsburg, Paul B.; Patel, Kavita K. (2020)."Balancing Lower U.S. Prescription Drug Prices And Innovation – Part 1 | Health Affairs Blog".Health Affairs Forefront.doi:10.1377/forefront.20201123.804451.
  23. ^Herper, Matthew (2019-12-23)."The debate over America's drug-pricing system is built on myths".STAT. Retrieved2021-07-01.
  24. ^Greene, Jan (January 2017)."EpiPen Controversy Reveals Complexity Behind Drug Price Tags".Annals of Emergency Medicine.69 (1):A16 –A19.doi:10.1016/j.annemergmed.2016.10.025.ISSN 0196-0644.
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