rs200798008
Variant summary
Our verdict is Uncertain significance. The variant received 1 ACMG points: 1P and 0B. PP3
The NM_033056.4(PCDH15):c.709C>T(p.Arg237Cys) variant causes a missense change. The variant allele was found at a frequency of 0.000106 in 1,613,568 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R237H) has been classified as Uncertain significance.
Frequency
Consequence
NM_033056.4 missense
Scores
Clinical Significance
Conservation
Publications
- autosomal recessive nonsyndromic hearing loss 23Inheritance: AR Classification: DEFINITIVE, STRONG, LIMITED Submitted by: Laboratory for Molecular Medicine, Labcorp Genetics (formerly Invitae), PanelApp Australia
- Usher syndrome type 1Inheritance: AR Classification: DEFINITIVE, SUPPORTIVE Submitted by: ClinGen, Orphanet
- Usher syndrome type 1FInheritance: AR Classification: DEFINITIVE, STRONG Submitted by: G2P, Labcorp Genetics (formerly Invitae), PanelApp Australia
- hearing loss, autosomal recessiveInheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
- nonsyndromic genetic hearing lossInheritance: AR Classification: LIMITED Submitted by: ClinGen
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ACMG classification
Our verdict: Uncertain_significance. The variant received 1 ACMG points.
Transcripts
RefSeq
Ensembl
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt |
|---|---|---|---|---|---|---|---|---|---|---|
| PCDH15 | ENST00000320301.11 | c.709C>T | p.Arg237Cys | missense_variant | Exon 8 of 33 | 1 | NM_033056.4 | ENSP00000322604.6 | ||
| PCDH15 | ENST00000644397.2 | c.709C>T | p.Arg237Cys | missense_variant | Exon 8 of 38 | NM_001384140.1 | ENSP00000495195.1 |
Frequencies
GnomAD3 genomes AF: 0.0000592 AC: 9AN: 151996Hom.: 0 Cov.: 32 show subpopulations
GnomAD2 exomes AF: 0.0000917 AC: 23AN: 250784 AF XY: 0.0000959 show subpopulations
GnomAD4 exome AF: 0.000111 AC: 162AN: 1461572Hom.: 0 Cov.: 32 AF XY: 0.000127 AC XY: 92AN XY: 727100 show subpopulations
Age Distribution
GnomAD4 genome AF: 0.0000592 AC: 9AN: 151996Hom.: 0 Cov.: 32 AF XY: 0.0000404 AC XY: 3AN XY: 74210 show subpopulations
Age Distribution
ClinVar
Submissions by phenotype
not provided Uncertain:2
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 -
This sequence change replaces arginine, which is basic and polar, with cysteine, which is neutral and slightly polar, at codon 237 of the PCDH15 protein (p.Arg237Cys). This variant is present in population databases (rs200798008, gnomAD 0.03%). This variant has not been reported in the literature in individuals affected with PCDH15-related conditions. ClinVar contains an entry for this variant (Variation ID: 164933). 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: "Probably Damaging"; 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. -
Usher syndrome type 1D;C1836027:Autosomal recessive nonsyndromic hearing loss 23;C1865885:Usher syndrome type 1F Uncertain:1
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not specified Uncertain:1
The p.Arg237Cys variant in PCDH15 has been previously identified by our laborato ry in 1 individual with hearing loss without a second PCDH15 variant. This varia nt has also been identified in 15/126086 European chromosomes and 3/10142 Ashken azi Jewish chromosomes by the Genome Aggregation Database (gnomAD, http://gnomad .broadinstitute.org/; dbSNP rs200798008). Although this variant has been seen in the general population, its frequency is not high enough to rule out a pathogen ic role. Computational prediction tools and conservation analysis suggest that t he p.Arg237Cys variant may impact the protein, though this information is not pr edictive enough to determine pathogenicity. In summary, the clinical significanc e of the p.Arg237Cys variant is uncertain. -
Usher syndrome type 1F Uncertain:1
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Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at