Of the USH patients, the causative gene was USH2A in 28 (Supplementary Table S1), MYO7A in 4, CDH23 in 2, USH1C in 2, GPR98/VLGR1 in 2, and PCDH15 in 1 patient (Supplementary Table S3). Here, PCDH15 is linked to Usher syndrome.