rs200188029
Variant summary
Our verdict is Likely benign. Variant got -2 ACMG points: 0P and 2B. BP4_Moderate
The NM_001171935.1(CDH23):c.-331G>A variant causes a 5 prime UTR premature start codon gain change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000186 in 1,607,702 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).
Frequency
Consequence
NM_001171935.1 5_prime_UTR_premature_start_codon_gain
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Likely_benign. Variant got -2 ACMG points.
Transcripts
RefSeq
Ensembl
Frequencies
GnomAD3 genomes AF: 0.000171 AC: 25AN: 146512Hom.: 0 Cov.: 32
GnomAD3 exomes AF: 0.000217 AC: 54AN: 249154Hom.: 0 AF XY: 0.000207 AC XY: 28AN XY: 135178
GnomAD4 exome AF: 0.000188 AC: 274AN: 1461190Hom.: 1 Cov.: 51 AF XY: 0.000180 AC XY: 131AN XY: 726876
GnomAD4 genome AF: 0.000171 AC: 25AN: 146512Hom.: 0 Cov.: 32 AF XY: 0.000169 AC XY: 12AN XY: 70816
ClinVar
Submissions by phenotype
not provided Uncertain:3
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This sequence change replaces arginine, which is basic and polar, with histidine, which is basic and polar, at codon 3109 of the CDH23 protein (p.Arg3109His). This variant is present in population databases (rs200188029, gnomAD 0.04%). 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: 178314). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt CDH23 protein function. 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. -
In silico analysis indicates that this missense variant does not alter protein structure/function; Has not been previously published as pathogenic or benign to our knowledge -
not specified Uncertain:1
The Arg3109His variant in CDH23 has not been previously reported in individuals with hearing loss, but has been identified in 0.04% (3/8324) of European America n chromosomes by the NHLBI Exome Sequencing Project (http://evs.gs.washington.ed u/EVS/; dbSNP rs200188029). Although this variant has been seen in the general p opulation, its frequency is not high enough to rule out a pathogenic role. Compu tational analyses (biochemical amino acid properties, conservation, AlignGVGD, P olyPhen2, and SIFT) do not provide strong support for or against an impact to th e protein. In summary, additional information is needed to determine the clinica l significance of this variant. -
Autosomal recessive nonsyndromic hearing loss 12;C1832845:Usher syndrome type 1D;C4539685:Pituitary adenoma 5, multiple types Uncertain:1
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CDH23-related disorder Uncertain:1
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Usher syndrome type 1D Uncertain:1
This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. -
Usher syndrome type 1 Uncertain:1
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Autosomal recessive nonsyndromic hearing loss 12 Uncertain:1
This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. -
Retinal dystrophy Uncertain:1
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Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at