Table 2. Distribution of the USH patients according to their clinical subtype and, for each subtype, the affected gene.

Clinical subtype	Gene	Number of patients
USH1 (36%)	MYO7A	107 (69.5%)
	CDH23	20 (13%)
	PCDH15	12 (7.8%)
	USH1C	11 (7.1%)
	USH1G	4 (2.6%)
USH2 (60.4%)	USH2A	236 (91.5%)
	ADGRV1	21 (8.1%)
	PDZD7	1 (0.4%)
USH3 (2.1%)	CLRN1	9