AHDC1^[1] is agene, changes in which are found through clinical studies to cause an array of symptoms in affected children known collectively asXia-Gibbs Syndrome,^[2][3] including globaldevelopmental delay, globalhypotonia, obstructivesleep apnoea andseizures.

In 2014, ahuman genetic disorder (Xia-Gibbs Syndrome) caused byde novo mutations inAHDC1 was discovered throughwhole-exome sequencing.^[4] Four patients were identified in the paper which recorded the initial discovery and their clinical features were reported, including global developmental delay, hypotonia, obstructive sleep apnea, intellectual disability and seizures. The publication of the paper and discovery of the new condition was reported in the media including in Science Daily and in Baylor College of Medicine News.^[5][6][7] Subsequent research has identified and reported the clinical features of an additional seven patients and there are now known to be twenty confirmed cases.^[8]

• Genes

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