The c.380A>G (NM_022124.6(CDH23):c.380A>G (p.Asp127Gly)) variant in CDH23 is a missense variant predicted to cause substitution of aspartate by glycine at amino acid 127. This variant is absent from gnomAD v2.1.1 (PM2_Supporting). The computational predictor REVEL gives a score of 0.796 which is above the threshold of 0.7, evidence that correlates with impact to CDH23 function (PP3). This variant has been detected in one individual with autosomal recessive Usher syndrome. For this individual, they were compound heterozygous for the variant and a pathogenic variant (NM_022124.6(CDH23):c.1949dup (p.Leu651fs) (SCV000271345.2) ) and this individual was confirmed in trans by family testing (1.0 point, PM3; LMM internal data). The patient with the variant had congenital severe-profound hearing loss with vestibular complications and ophthalmology-related issues, features highly specific to Usher syndrome (LMM Internal Data; PP4). This variant was re-reviewed on 1.18.2023 and because no additional evidence is available, professional judgment was used to retain this variant as likely pathogenic for autosomal recessive Usher syndrome based on the ACMG/AMP criteria applied, as specified by the ClinGen Hearing Loss VCEP. In summary, this variant is classified as likely pathogenic for autosomal recessive Usher Syndrome based on the ACMG/AMP criteria applied, as specified by the ClinGen Hearing Loss VCEP: PM2_supporting, PP3, PM3, PP4 (ClinGen Hearing Loss VCEP Specifications Version 2; 6/27/2022).