rs193921072

chr1-216072909-C-Achr1-216072909-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM1 PM2

The NM_206933.4(USH2A):c.5837G>T(p.Arg1946Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R1946Q) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 32)
• Consequence: USH2A NM_206933.4 missense
• Clinical Significance: Uncertain significance no assertion criteria provided U:1
• Conservation: PhyloP100: 0.624

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 Uncertain_significance. Variant got 4 ACMG points.

• PM1: In a domain Fibronectin type-III 5 (size 86) in uniprot entity USH2A_HUMAN there are 20 pathogenic changes around while only 4 benign (83%) in NM_206933.4
• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
USH2A	NM_206933.4	c.5837G>T	p.Arg1946Leu	missense_variant	29/72	ENST00000307340.8
USH2A-AS2	NR_125992.1	n.136+309C>A		intron_variant, non_coding_transcript_variant
USH2A-AS2	NR_125993.1	n.136+309C>A		intron_variant, non_coding_transcript_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
USH2A	ENST00000307340.8	c.5837G>T	p.Arg1946Leu	missense_variant	29/72	1	NM_206933.4	P1
USH2A-AS2	ENST00000446411.5	n.136+309C>A		intron_variant, non_coding_transcript_variant		2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: no assertion criteria provided

Submissions by phenotype

Malignant tumor of prostate Uncertain:1

Uncertain significance, no assertion criteria provided

literature only

Science for Life laboratory, Karolinska Institutet

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Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.18
BayesDel_addAF	Benign	-0.077	T
BayesDel_noAF	Benign	-0.35
Cadd	Benign	21
Dann	Uncertain	1.0
DEOGEN2	Benign	0.20	T
Eigen	Benign	0.17
Eigen_PC	Benign	0.15
FATHMM_MKL	Uncertain	0.78	D
LIST_S2	Benign	0.78	T
M_CAP	Uncertain	0.22	D
MetaRNN	Uncertain	0.68	D
MetaSVM	Benign	-0.99	T
MutationAssessor	Uncertain	2.9	M
MutationTaster	Benign	1.0	D;D
PrimateAI	Benign	0.34	T
PROVEAN	Uncertain	-2.6	D
REVEL	Benign	0.18
Sift	Benign	0.52	T
Sift4G	Pathogenic	0.0	D
Polyphen		0.98	D
Vest4		0.65
MutPred		0.45		Loss of disorder (P = 0.0238);
MVP		0.93
MPC		0.14
ClinPred		0.99	D
GERP RS		4.9
Varity_R		0.25
gMVP		0.59

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.27		Details are displayed if max score is > 0.2
DS_DL_spliceai		0.27		Position offset: -20

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

Publications

LitVar

Other links and lift over

dbSNP: rs193921072; hg19: chr1-216246251; COSMIC: COSV56419910;