NM_032119.4:c.8651T>G

Variant names:

• chr5-90706315-T-G
• rs111033517
• NM_032119.4:c.8651T>G

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_032119.4(ADGRV1):​c.8651T>G​(p.Val2884Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,461,218 control chromosomes in the GnomAD database, with no homozygous occurrence. 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 Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. V2884A) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: ADGRV1 NM_032119.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.00
• Publications: 0 publications found

Genes affected

ADGRV1 (HGNC:17416): (adhesion G protein-coupled receptor V1) This gene encodes a member of the G-protein coupled receptor superfamily. The encoded protein contains a 7-transmembrane receptor domain, binds calcium and is expressed in the central nervous system. Mutations in this gene are associated with Usher syndrome 2 and familial febrile seizures. Several alternatively spliced transcripts have been described. [provided by RefSeq, Jul 2008]

ADGRV1 Gene-Disease associations (from GenCC):

• Usher syndrome type 2

  Inheritance: AR Classification: DEFINITIVE, SUPPORTIVE Submitted by: ClinGen, Orphanet
• Usher syndrome type 2C

  Inheritance: AR Classification: STRONG Submitted by: G2P, PanelApp Australia, Labcorp Genetics (formerly Invitae)
• febrile seizures, familial, 4

  Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics
• nonsyndromic genetic hearing loss

  Inheritance: AR Classification: NO_KNOWN Submitted by: ClinGen

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.21252629).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_032119.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ADGRV1	NM_032119.4	MANE Select	c.8651T>G	p.Val2884Gly	missense	Exon 38 of 90	NP_115495.3
	ADGRV1	NR_003149.2		n.8667T>G		non_coding_transcript_exon	Exon 38 of 90

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ADGRV1	ENST00000405460.9	TSL:1 MANE Select	c.8651T>G	p.Val2884Gly	missense	Exon 38 of 90	ENSP00000384582.2
	ADGRV1	ENST00000509621.1	TSL:1	n.1348T>G		non_coding_transcript_exon	Exon 6 of 26
	ADGRV1	ENST00000640403.1	TSL:5	c.5942T>G	p.Val1981Gly	missense	Exon 28 of 29	ENSP00000492531.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1461218 Hom.: 0 Cov.: 32 AF XY: 0.00000138 AC XY: 1 AN XY: 726828

African (AFR) AF: 0.0000299 AC: 1 AN: 33476

American (AMR) AF: 0.00 AC: 0 AN: 44698

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26128

East Asian (EAS) AF: 0.00 AC: 0 AN: 39660

South Asian (SAS) AF: 0.00 AC: 0 AN: 86122

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53386

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5766

European-Non Finnish (NFE) AF: 9.00e-7 AC: 1 AN: 1111626

Other (OTH) AF: 0.00 AC: 0 AN: 60356

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Uncertain:1

Jul 05, 2022

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces valine, which is neutral and non-polar, with glycine, which is neutral and non-polar, at codon 2884 of the ADGRV1 protein (p.Val2884Gly). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with ADGRV1-related conditions. ClinVar contains an entry for this variant (Variation ID: 1465694). 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: "Tolerated"; PolyPhen-2: "Probably Damaging"; Align-GVGD: "Class C0"). Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may create or strengthen a splice site. 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.

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.089
BayesDel_addAF	Benign	-0.19	T
BayesDel_noAF	Benign	-0.52
CADD	Benign	17
DANN	Benign	0.97
DEOGEN2	Benign	0.096	T
Eigen	Benign	-0.015
Eigen_PC	Benign	-0.031
FATHMM_MKL	Uncertain	0.76	D
LIST_S2	Benign	0.61	T
M_CAP	Benign	0.052	D
MetaRNN	Benign	0.21	T
MetaSVM	Benign	-0.99	T
PhyloP100		0.0
PrimateAI	Benign	0.31	T
PROVEAN	Benign	-1.6	N
REVEL	Benign	0.18
Sift	Benign	0.41	T
Sift4G	Benign	0.42	T
Polyphen		0.95	P
Vest4		0.42
MutPred		0.56		Loss of stability (P = 3e-04)
MVP		0.52
MPC		0.35
ClinPred		0.42	T
GERP RS		2.0
Varity_R		0.096
gMVP		0.51
Mutation Taster		=49/51	disease causing

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.040		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs111033517; hg19: chr5-90002132;