ClinVar Miner

Submissions for variant NM_022124.6(CDH23):c.7823G>A (p.Arg2608His)

gnomAD frequency: 0.00059  dbSNP: rs202052174
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Total submissions: 13
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
Laboratory for Molecular Medicine,Mass General Brigham Personalized Medicine RCV000039276 SCV000062960 uncertain significance not specified 2018-12-14 criteria provided, single submitter clinical testing Variant classified as Uncertain Significance - Favor Benign. The p.Arg2608His va riant in CDH23 has been reported in 0.1% (7/6982) of chromosomes from probands w ith either hearing loss or Usher syndrome, at least one of whom had an alternate genetic cause for their disease (Astuto 2002, Jaijo 2010; Malm 2011, LMM data). However, this variant has also been identified in 0.1% (116/115288) of European chromosomes by gnomAD (, which suggests that t he variant is unlikely to be causative for disease. Computational prediction too ls and conservation analysis suggest that this variant may impact the protein, t hough this information is not predictive enough to determine pathogenicity. In s ummary, while the clinical significance of p.Arg2608His is uncertain, these data suggest that it is more likely benign. ACMG/AMP criteria: BS1_Supporting, PP3.
Eurofins NTD LLC (GA) RCV000725220 SCV000335098 uncertain significance not provided 2016-05-10 criteria provided, single submitter clinical testing
GeneDx RCV000725220 SCV000577108 likely benign not provided 2021-03-05 criteria provided, single submitter clinical testing This variant is associated with the following publications: (PMID: 16963483, 21940737, 12786748, 28847902, 27018795, 12075507, 19683999, 21174530, 26969326, 30459346, 33576794)
Illumina Laboratory Services,Illumina RCV000778289 SCV000914467 uncertain significance CDH23-Related Disorders 2017-04-28 criteria provided, single submitter clinical testing The CDH23 c.7823G>A (p.Arg2608His) missense variant has been reported in at least three studies in individuals with autosomal recessive nonsyndromic hearing loss, in which it is found in a total of 25 individuals, including in three in a compound heterozygous state and in 22 in a heterozygous state (Astuto et al. 2002; Wu et al. 2016). The p.Arg2608His variant is also reported in one study in a compound heterozygous state in an individual with Usher syndrome (Jaijo et al. 2010). The p.Arg2608His variant was absent from 256 controls, but is reported at a frequency of 0.00213 in the European (non-Finnish) population of the Exome Aggregation Consortium. Based on the evidence, the p.Arg2608His variant is classified as a variant of unknown significance but suspicious for pathogenicity for CDH23-related disorders. This variant was observed by ICSL as part of a predisposition screen in an ostensibly healthy population.
Mendelics RCV000988383 SCV001138082 uncertain significance Retinitis pigmentosa-deafness syndrome 2019-05-28 criteria provided, single submitter clinical testing
Invitae RCV000725220 SCV001413566 uncertain significance not provided 2019-12-20 criteria provided, single submitter clinical testing This sequence change replaces arginine with histidine at codon 2608 of the CDH23 protein (p.Arg2608His). The arginine residue is highly conserved and there is a small physicochemical difference between arginine and histidine. This variant is present in population databases (rs202052174, ExAC 0.2%). This variant has been observed in individuals affected with deafness or Usher syndrome (PMID: 12075507, 19683999). ClinVar contains an entry for this variant (Variation ID: 46040). Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be disruptive, but these predictions have not been confirmed by published functional studies and their clinical significance is uncertain. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance.
Ocular Genomics Institute, Massachusetts Eye and Ear RCV001374881 SCV001572157 uncertain significance Usher syndrome type 1D 2021-04-08 criteria provided, single submitter research The CDH23 c.7823G>A variant was identified in an individual with retinitis pigmentosa with a presumed recessive inheritance pattern. Through a review of available evidence we were able to apply the following criteria: PM2, PP3. Based on this evidence we have classified this variant as Variant of Uncertian Significance.
Genome-Nilou Lab RCV001559300 SCV001781490 uncertain significance Autosomal recessive nonsyndromic hearing loss 12 2021-07-14 criteria provided, single submitter clinical testing
Genome-Nilou Lab RCV001374881 SCV001781491 uncertain significance Usher syndrome type 1D 2021-07-14 criteria provided, single submitter clinical testing
Institute for Clinical Genetics, University Hospital TU Dresden, University Hospital TU Dresden RCV001374881 SCV002011389 likely pathogenic Usher syndrome type 1D 2021-11-03 criteria provided, single submitter clinical testing
Department of Genetics, Rouen University Hospital, Normandy Center for Genomic and Personalized Medicine RCV001264702 SCV001442885 uncertain significance Neurodevelopmental abnormality 2020-04-03 no assertion criteria provided clinical testing
Joint Genome Diagnostic Labs from Nijmegen and Maastricht, Radboudumc and MUMC+ RCV000725220 SCV001958480 uncertain significance not provided no assertion criteria provided clinical testing
Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center RCV000725220 SCV001970142 uncertain significance not provided no assertion criteria provided clinical testing

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