1-16125216-CAG-C

Position:

• chr1-16125216-CAG-C

Variant summary

Our verdict is Pathogenic. Variant got 12 ACMG points: 12P and 0B. PVS1 PM2 PP5_Moderate

The NM_004431.5(EPHA2):​c.2928_2929del​(p.Ile976MetfsTer36) variant causes a frameshift, stop lost change. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Likely pathogenic (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: EPHA2 NM_004431.5 frameshift, stop_lost
• Clinical Significance: Likely pathogenic criteria provided, single submitter P:1
• Conservation: PhyloP100: 6.29

Genes affected

EPHA2 (HGNC:3386): (EPH receptor A2) This gene belongs to the ephrin receptor subfamily of the protein-tyrosine kinase family. EPH and EPH-related receptors have been implicated in mediating developmental events, particularly in the nervous system. Receptors in the EPH subfamily typically have a single kinase domain and an extracellular region containing a Cys-rich domain and 2 fibronectin type III repeats. The ephrin receptors are divided into 2 groups based on the similarity of their extracellular domain sequences and their affinities for binding ephrin-A and ephrin-B ligands. This gene encodes a protein that binds ephrin-A ligands. Mutations in this gene are the cause of certain genetically-related cataract disorders.[provided by RefSeq, May 2010]

ACMG classification

Verdict is Pathogenic. Variant got 12 ACMG points.

• PVS1: Stoplost variant. No alternative stopcodon identified downstream, so we assume a Nonstop Mediated Decay. LoF is a known mechanism of disease.
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 1-16125216-CAG-C is Pathogenic according to our data. Variant chr1-16125216-CAG-C is described in ClinVar as [Likely_pathogenic]. Clinvar id is 2633255.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
EPHA2	NM_004431.5	c.2928_2929del	p.Ile976MetfsTer36	frameshift_variant, stop_lost	17/17	ENST00000358432.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
EPHA2	ENST00000358432.8	c.2928_2929del	p.Ile976MetfsTer36	frameshift_variant, stop_lost	17/17	1	NM_004431.5	P1

Frequencies

GnomAD3 genomes Cov.: 32

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome Cov.: 32

ClinVar

Significance: Likely pathogenic

Submissions summary: Pathogenic:1

Revision: criteria provided, single submitter

Submissions by phenotype

EPHA2-related disorder Pathogenic:1

Likely pathogenic, criteria provided, single submitter

clinical testing

PreventionGenetics, part of Exact Sciences

May 12, 2023

The EPHA2 c.2928_2929delCT variant is predicted to result in a frameshift and premature protein termination (p.Ile976Metfs*36). This variant disrupts the stop codon of the EPHA2 gene and leads to extension of the coding sequence by 36 amino acids. To our knowledge, this variant has not been reported in the literature or in a large population database (http://gnomad.broadinstitute.org), indicating this variant is rare. Of note other variants leading to frameshifts and extension of the EPHA2 protein have been reported in patients with cataracts. (p.Ile976Hisfs*37 reported in Reis et al. 2014. PubMed ID: 24940039; p.Val972Glyfs*40 reported in Zhang et al. 2009. PubMed ID: 19306328). Frameshift variants in EPHA2 are expected to be pathogenic. This variant is interpreted as likely pathogenic. -

Computational scores

Source: dbNSFP v4.3

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr1-16451711;