rs202190568
Variant summary
Our verdict is Likely benign. The variant received -5 ACMG points: 0P and 5B. BP4_StrongBP6
The NM_032119.4(ADGRV1):c.12212G>A(p.Arg4071Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000839 in 1,613,418 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).
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 -5 ACMG points.
Transcripts
RefSeq
Ensembl
Frequencies
GnomAD3 genomes   AF:  0.000704  AC: 107AN: 152090Hom.:  0  Cov.: 32 show subpopulations 
GnomAD2 exomes  AF:  0.000719  AC: 179AN: 249010 AF XY:  0.000792   show subpopulations 
GnomAD4 exome  AF:  0.000853  AC: 1247AN: 1461328Hom.:  1  Cov.: 32 AF XY:  0.000854  AC XY: 621AN XY: 726952 show subpopulations 
Age Distribution
GnomAD4 genome   AF:  0.000704  AC: 107AN: 152090Hom.:  0  Cov.: 32 AF XY:  0.000767  AC XY: 57AN XY: 74292 show subpopulations 
Age Distribution
ClinVar
Submissions by phenotype
not provided    Uncertain:3Benign:2 
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not specified    Uncertain:1Benign:1 
p.Arg4071Gln in exon 59 of GPR98: This variant is not expected to have clinical significance due to a lack of conservation across species, including mammals. Of note, more than 10 different mammals have a glutamine (Gln) at this position despite high nearby amino acid conservation. In addition, this variant was iden tified in 0.1% (74/66372) of European chromosomes by the Exome Aggregation Conso rtium (ExAC, http://exac.broadinstitute.org; dbSNP rs202190568). -
Variant summary: ADGRV1 c.12212G>A (p.Arg4071Gln) results in a conservative amino acid change located in the Na-Ca exchanger/integrin-beta4 domain (IPR003644) of the encoded protein sequence. Five of five in-silico tools predict a benign effect of the variant on protein function. The variant allele was found at a frequency of 0.00072 in 249010 control chromosomes in the gnomAD database, including 1 homozygote. This frequency is not significantly higher than estimated for a pathogenic variant in ADGRV1 causing Usher Syndrome (0.00072 vs 0.0054), allowing no conclusion about variant significance. To our knowledge, no occurrence of c.12212G>A in individuals affected with features of ADGRV1-Related Disorders such as Usher Syndrome type 2C or Familial Febrile Seizures 4 and no experimental evidence demonstrating its impact on protein function have been reported. Six clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar after 2014 without evidence for independent evaluation. Multiple laboratories reported the variant with conflicting assessments (VUS, n=3; Likely Benign, n=3). Based on the evidence outlined above, the variant was classified as VUS-possibly benign. -
Usher syndrome type 2C    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. -
Computational scores
Source: 
Splicing
 Find out detailed SpliceAI scores and Pangolin per-transcript scores at