1-16124931-G-A

Position:

• chr1-16124931-G-A

Variant summary

Our verdict is Benign. Variant got -9 ACMG points: 0P and 9B. BP4_Strong BS1_Supporting BS2

The NM_004431.5(EPHA2):​c.*284C>T variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000629 in 470,294 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: 𝑓 0.00053 (1 hom., cov: 32)
  • Exomes 𝑓: 0.00068 (0 hom.)
• Consequence: EPHA2 NM_004431.5 3_prime_UTR
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -4.09

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 Benign. Variant got -9 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.86).
• BS1: Variant frequency is greater than expected in population amr. gnomad4 allele frequency = 0.000525 (80/152286) while in subpopulation AMR AF= 0.000653 (10/15308). AF 95% confidence interval is 0.000354. There are 1 homozygotes in gnomad4. There are 49 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting
• BS2: High AC in GnomAd4 at 80 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
EPHA2	NM_004431.5	c.*284C>T		3_prime_UTR_variant	17/17	ENST00000358432.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
EPHA2	ENST00000358432.8	c.*284C>T		3_prime_UTR_variant	17/17	1	NM_004431.5	P1

Frequencies

GnomAD3 genomes AF: 0.000526 AC: 80 AN: 152168 Hom.: 1 Cov.: 32

Gnomad AFR AF: 0.000121

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000654

Gnomad ASJ AF: 0.00979

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.000441

Gnomad OTH AF: 0.000478

GnomAD4 exome AF: 0.000679 AC: 216 AN: 318008 Hom.: 0 Cov.: 2 AF XY: 0.000727 AC XY: 122 AN XY: 167736

Gnomad4 AFR exome AF: 0.000209

Gnomad4 AMR exome AF: 0.000807

Gnomad4 ASJ exome AF: 0.0107

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.0000502

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.000365

Gnomad4 OTH exome AF: 0.00127

GnomAD4 genome AF: 0.000525 AC: 80 AN: 152286 Hom.: 1 Cov.: 32 AF XY: 0.000658 AC XY: 49 AN XY: 74460

Gnomad4 AFR AF: 0.000120

Gnomad4 AMR AF: 0.000653

Gnomad4 ASJ AF: 0.00979

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.000441

Gnomad4 OTH AF: 0.000473

Alfa AF: 0.000476 Hom.: 0

Bravo AF: 0.000499

Asia WGS AF: 0.000289 AC: 1 AN: 3478

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Cataract 6 multiple types Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 13, 2018

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.86
CADD	Benign	0.031
DANN	Benign	0.74

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: rs537231128; hg19: chr1-16451426;