rs74766738

Positions:

• chr1-216072872-T-G

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_Strong BP6_Very_Strong BA1

The NM_206933.4(USH2A):​c.5857+17A>C variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00289 in 1,608,520 control chromosomes in the GnomAD database, including 111 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

• Frequency:
  • Genomes: 𝑓 0.016 (59 hom., cov: 32)
  • Exomes 𝑓: 0.0016 (52 hom.)
• Consequence: USH2A NM_206933.4 intron
• Clinical Significance: Benign criteria provided, multiple submitters, no conflicts B:6
• Conservation: PhyloP100: 0.0590

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]

USH2A-AS2 (HGNC:40605): (USH2A antisense RNA 2)

ACMG classification

Verdict is Benign. Variant got -20 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.84).
• BP6: Variant 1-216072872-T-G is Benign according to our data. Variant chr1-216072872-T-G is described in ClinVar as [Benign]. Clinvar id is 263276.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr1-216072872-T-G is described in Lovd as [Benign]. Variant chr1-216072872-T-G is described in Lovd as [Likely_benign].
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.0515 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
USH2A	NM_206933.4	c.5857+17A>C		intron_variant		ENST00000307340.8
USH2A-AS2	NR_125992.1	n.136+272T>G		intron_variant, non_coding_transcript_variant
USH2A-AS2	NR_125993.1	n.136+272T>G		intron_variant, non_coding_transcript_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
USH2A	ENST00000307340.8	c.5857+17A>C		intron_variant		1	NM_206933.4	P1
USH2A-AS2	ENST00000446411.5	n.136+272T>G		intron_variant, non_coding_transcript_variant		2

Frequencies

GnomAD3 genomes AF: 0.0155 AC: 2357 AN: 152096 Hom.: 58 Cov.: 32

Gnomad AFR AF: 0.0533

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00734

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000207

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00316

Gnomad NFE AF: 0.000162

Gnomad OTH AF: 0.0115

GnomAD3 exomes AF: 0.00387 AC: 970 AN: 250512 Hom.: 20 AF XY: 0.00265 AC XY: 359 AN XY: 135350

Gnomad AFR exome AF: 0.0531

Gnomad AMR exome AF: 0.00208

Gnomad ASJ exome AF: 0.0000994

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.000131

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.000133

Gnomad OTH exome AF: 0.00278

GnomAD4 exome AF: 0.00157 AC: 2283 AN: 1456306 Hom.: 52 Cov.: 29 AF XY: 0.00129 AC XY: 934 AN XY: 724930

Gnomad4 AFR exome AF: 0.0557

Gnomad4 AMR exome AF: 0.00253

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.000139

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.0000786

Gnomad4 OTH exome AF: 0.00337

GnomAD4 genome AF: 0.0155 AC: 2364 AN: 152214 Hom.: 59 Cov.: 32 AF XY: 0.0149 AC XY: 1106 AN XY: 74406

Gnomad4 AFR AF: 0.0534

Gnomad4 AMR AF: 0.00727

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.000207

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.000162

Gnomad4 OTH AF: 0.0114

Alfa AF: 0.0127 Hom.: 8

Bravo AF: 0.0176

Asia WGS AF: 0.00289 AC: 10 AN: 3478

ClinVar

Significance: Benign

Submissions summary: Benign:6

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not provided Benign:3

Benign, criteria provided, single submitter	clinical testing	GeneDx	Mar 03, 2015	- -
Benign, criteria provided, single submitter	clinical testing	Invitae	Jan 31, 2024	- -
Benign, criteria provided, single submitter	clinical testing	ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories	Oct 14, 2023	- -

not specified Benign:1

Benign, criteria provided, single submitter

clinical testing

PreventionGenetics, part of Exact Sciences

-

- -

Retinitis pigmentosa 39 Benign:1

Benign, criteria provided, single submitter

clinical testing

Genome-Nilou Lab

Apr 11, 2023

- -

Usher syndrome type 2A Benign:1

Benign, criteria provided, single submitter

clinical testing

Genome-Nilou Lab

Apr 11, 2023

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.84
CADD	Benign	3.6
DANN	Benign	0.55

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: rs74766738; hg19: chr1-216246214;