rs199793172
Variant summary
Our verdict is Uncertain significance. Variant got 0 ACMG points: 0P and 0B.
The NM_022124.6(CDH23):c.325G>A(p.Asp109Asn) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000159 in 1,613,746 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★★).
Frequency
Consequence
NM_022124.6 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Uncertain_significance. Variant got 0 ACMG points.
Transcripts
RefSeq
Ensembl
Frequencies
GnomAD3 genomes AF: 0.0000789 AC: 12AN: 152078Hom.: 0 Cov.: 32
GnomAD3 exomes AF: 0.0000722 AC: 18AN: 249266Hom.: 0 AF XY: 0.0000740 AC XY: 10AN XY: 135226
GnomAD4 exome AF: 0.000168 AC: 245AN: 1461668Hom.: 0 Cov.: 32 AF XY: 0.000161 AC XY: 117AN XY: 727122
GnomAD4 genome AF: 0.0000789 AC: 12AN: 152078Hom.: 0 Cov.: 32 AF XY: 0.0000673 AC XY: 5AN XY: 74272
ClinVar
Submissions by phenotype
not provided Uncertain:3
This sequence change replaces aspartic acid, which is acidic and polar, with asparagine, which is neutral and polar, at codon 109 of the CDH23 protein (p.Asp109Asn). This variant is present in population databases (rs199793172, gnomAD 0.01%). This variant has not been reported in the literature in individuals affected with CDH23-related conditions. ClinVar contains an entry for this variant (Variation ID: 162865). Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Not Available"; Align-GVGD: "Class C0"). 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. -
The p.Asp109Asn variant (rs199793172) has not been reported in the medical literature; however, it is listed in the ClinVar database as a variant of uncertain significance (Variation ID: 162865). It is listed in the Genome Aggregation Database (gnomAD) browser with an overall frequency of 0.006% (identified in 18 out of 277,142 chromosomes). The aspartic at codon 109 is moderately conserved considering 12 species (Alamut software v2.9), and computational analyses suggest this variant has a significant effect on CDH23 protein structure/function (SIFT: damaging, PolyPhen2: probably damaging, and Mutation Taster: disease causing). However, based on the available information, the clinical significance of the p.Asp109Asn variant cannot be determined with certainty. -
In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Has not been previously published as pathogenic or benign to our knowledge -
not specified Uncertain:1
The p.Asp109Asn variant in CDH23 gene has not been previously reported in indivi duals with hearing loss or in large population studies. Computational prediction tools and conservation analysis suggest that this variant may impact the protei n, though this information is not predictive enough to determine pathogenicity. In summary, the clinical significance of the p.Asp109Asn variant is uncertain. -
Usher syndrome type 1 Uncertain:1
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Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at