rs547397177
Variant summary
Our verdict is Likely benign. The variant received -3 ACMG points: 0P and 3B. BP4_ModerateBP6
The NM_032119.4(ADGRV1):c.8779G>A(p.Val2927Ile) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000645 in 1,612,512 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. V2927A) has been classified as Likely benign.
Frequency
Consequence
NM_032119.4 missense
Scores
Clinical Significance
Conservation
Publications
- Usher syndrome type 2Inheritance: AR Classification: DEFINITIVE, SUPPORTIVE Submitted by: ClinGen, Orphanet
 - Usher syndrome type 2CInheritance: AR Classification: STRONG Submitted by: G2P, PanelApp Australia, Labcorp Genetics (formerly Invitae)
 - febrile seizures, familial, 4Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics
 - nonsyndromic genetic hearing lossInheritance: AR Classification: NO_KNOWN Submitted by: ClinGen
 
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ACMG classification
Our verdict: Likely_benign. The variant received -3 ACMG points.
Transcripts
RefSeq
Ensembl
Frequencies
GnomAD3 genomes   AF:  0.0000921  AC: 14AN: 152088Hom.:  0  Cov.: 32 show subpopulations 
GnomAD2 exomes  AF:  0.0000683  AC: 17AN: 248910 AF XY:  0.0000444   show subpopulations 
GnomAD4 exome  AF:  0.0000616  AC: 90AN: 1460306Hom.:  0  Cov.: 29 AF XY:  0.0000592  AC XY: 43AN XY: 726502 show subpopulations 
Age Distribution
GnomAD4 genome   AF:  0.0000920  AC: 14AN: 152206Hom.:  0  Cov.: 32 AF XY:  0.0000134  AC XY: 1AN XY: 74420 show subpopulations 
Age Distribution
ClinVar
Submissions by phenotype
not specified    Uncertain:2 
Variant summary: ADGRV1 c.8779G>A (p.Val2927Ile) results in a conservative amino acid change in the encoded protein sequence. Three of five in-silico tools predict a benign effect of the variant on protein function. The variant allele was found at a frequency of 6.8e-05 in 248910 control chromosomes. This frequency is not significantly higher than estimated for a pathogenic variant in ADGRV1 causing Usher Syndrome (6.8e-05 vs 0.0054), allowing no conclusion about variant significance. c.8779G>A has been reported in the literature in one heterozygous individual affected with retinitis pigmentosa, although a second ADGRV1 variant was not detected (Bravo-Gil_2017), as well as a compound heterozygous individual with Usher syndrome, although a second truncating ADGRV1 was identified in cis (Candelo_2021). These reports therefore do not provide unequivocal conclusions about association of the variant with Usher Syndrome. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. Three ClinVar submitters (evaluation after 2014) have cited the variant, with two submitters classifying the variant as uncertain significance and one submitter classifying it as likely benign. Based on the evidence outlined above, the variant was classified as uncertain significance. -
The p.Val2927Ile variant in GPR98 has not been previously reported in individual s with hearing loss, but has been identified in 7/66708 European chromosomes by the Exome Aggregation Consortium (ExAC, http://exac.broadinstitute.org; dbSNP rs 547397177). Computational prediction tools and conservation analyses suggest tha t the p.Val2927Ile variant may not impact the protein, though this information i s not predictive enough to rule out pathogenicity. In summary, the clinical sign ificance of the p.Val2927Ile variant is uncertain. -
not provided    Uncertain:1Benign:1 
The V2927I variant in the ADGRV1 gene has been reported previously in an individual with retinitis pigmentosa, however a second variant was not identified (Bravo-Gil et al., 2017). The V2927I variant is observed in 7/66708 (0.01%) alleles from individuals of non-Finnish European background, in the ExAC dataset (Lek et al., 2016). The V2927I variant is a conservative amino acid substitution, which is not likely to impact secondary protein structure as these residues share similar properties. This substitution occurs at a position where amino acids with similar properties to Valine are tolerated across species. In silico analysis is inconsistent in its predictions as to whether or not the variant is damaging to the protein structure/function. We interpret V2927I as a variant of uncertain significance. -
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Computational scores
Source: 
Splicing
 Find out detailed SpliceAI scores and Pangolin per-transcript scores at