USH1C and Usher syndrome: 2000)). In addition to Usher syndrome, patients with this condition present with congenital hyperinsulinism, severe enteropathy, and renal tubulopathy, and they may develop non‐autoimmune diabetes in adolescence (Hussain et al. 2004; Al Mutair et al. 2013). In P96, the USH1C/ABCC8 deletion was primarily detected by NGS and confirmed by array‐CGH.