1-215782853-C-A

Position:

• chr1-215782853-C-A

Variant summary

Our verdict is Benign. Variant got -7 ACMG points: 0P and 7B. BP4_Strong BP6 BP7 BS2_Supporting

The NM_206933.4(USH2A):​c.10470G>T​(p.Val3490Val) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000595 in 1,613,932 control chromosomes in the GnomAD database, including 2 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

• Frequency:
  • Genomes: 𝑓 0.00037 (0 hom., cov: 33)
  • Exomes 𝑓: 0.00062 (2 hom.)
• Consequence: USH2A NM_206933.4 synonymous
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1 B:4
• Conservation: PhyloP100: 0.606

Genes affected

USH2A (HGNC:12601): (usherin) This gene encodes a protein that contains laminin EGF motifs, a pentaxin domain, and many fibronectin type III motifs. The protein is found in the basement membrane, and may be important in development and homeostasis of the inner ear and retina. Mutations within this gene have been associated with Usher syndrome type IIa and retinitis pigmentosa. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Dec 2008]

ACMG classification

Verdict is Benign. Variant got -7 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.56).
• BP6: Variant 1-215782853-C-A is Benign according to our data. Variant chr1-215782853-C-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 48346.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=4, Uncertain_significance=1}.
• BP7: Synonymous conserved (PhyloP=0.606 with no splicing effect.
• BS2: High Homozygotes in GnomAdExome4 at 2 AR geneVariant has number of homozygotes lower than other variant known as pathogenic in the gene, so the strength is limited to Supporting.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
USH2A	NM_206933.4	c.10470G>T	p.Val3490Val	synonymous_variant	53/72	ENST00000307340.8	NP_996816.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
USH2A	ENST00000307340.8	c.10470G>T	p.Val3490Val	synonymous_variant	53/72	1	NM_206933.4	ENSP00000305941.3
USH2A	ENST00000674083.1	c.10470G>T	p.Val3490Val	synonymous_variant	53/73			ENSP00000501296.1

Frequencies

GnomAD3 genomes AF: 0.000375 AC: 57 AN: 152148 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.000217

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000131

Gnomad ASJ AF: 0.00173

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00316

Gnomad NFE AF: 0.000558

Gnomad OTH AF: 0.000478

GnomAD3 exomes AF: 0.000247 AC: 62 AN: 251062 Hom.: 0 AF XY: 0.000265 AC XY: 36 AN XY: 135662

Gnomad AFR exome AF: 0.000246

Gnomad AMR exome AF: 0.0000290

Gnomad ASJ exome AF: 0.000893

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.000396

Gnomad OTH exome AF: 0.000491

GnomAD4 exome AF: 0.000619 AC: 905 AN: 1461666 Hom.: 2 Cov.: 31 AF XY: 0.000582 AC XY: 423 AN XY: 727120

Gnomad4 AFR exome AF: 0.000179

Gnomad4 AMR exome AF: 0.0000224

Gnomad4 ASJ exome AF: 0.00119

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.000759

Gnomad4 OTH exome AF: 0.000381

GnomAD4 genome AF: 0.000368 AC: 56 AN: 152266 Hom.: 0 Cov.: 33 AF XY: 0.000430 AC XY: 32 AN XY: 74462

Gnomad4 AFR AF: 0.000217

Gnomad4 AMR AF: 0.000131

Gnomad4 ASJ AF: 0.00173

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.000559

Gnomad4 OTH AF: 0.000473

Alfa AF: 0.000442 Hom.: 0

Bravo AF: 0.000374

EpiCase AF: 0.000491

EpiControl AF: 0.000652

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1 Benign:4

Revision: criteria provided, conflicting classifications

Submissions by phenotype

not provided Uncertain:1 Benign:3

Likely benign, criteria provided, single submitter	clinical testing	GeneDx	May 04, 2018	This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -
Likely benign, criteria provided, single submitter	clinical testing	CeGaT Center for Human Genetics Tuebingen	Apr 01, 2023	USH2A: BP4, BP7 -
Likely benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jan 30, 2024	- -
Uncertain significance, criteria provided, single submitter	clinical testing	Eurofins Ntd Llc (ga)	Nov 16, 2017	- -

not specified Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Apr 30, 2012

Val3490Val in Exon 53 of USH2A: This variant is not expected to have clinical si gnificance because it does not alter an amino acid residue, is not located withi n the splice consensus sequence, and has been identified in 1/7020 European Amer ican chromosomes from a broad population by the NHLBI Exome Sequencing Project ( http://evs.gs.washington.edu/EVS). -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.56
CADD	Benign	0.77
DANN	Benign	0.70

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.0		Details are displayed if max score is > 0.2

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

Publications

LitVar

Other links and lift over

dbSNP: rs201401001; hg19: chr1-215956195;