chr1-155085937-C-T

Position:

• chr1-155085937-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_004952.5(EFNA3):​c.503C>T​(p.Ala168Val) 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 (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: EFNA3 NM_004952.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.70

Genes affected

EFNA3 (HGNC:3223): (ephrin A3) This gene encodes a member of the ephrin (EPH) family. The ephrins and EPH-related receptors comprise the largest subfamily of receptor protein-tyrosine kinases and have been implicated in mediating developmental events, especially in the nervous system and in erythropoiesis. Based on their structures and sequence relationships, ephrins are divided into the ephrin-A (EFNA) class, which are anchored to the membrane by a glycosylphosphatidylinositol linkage, and the ephrin-B (EFNB) class, which are transmembrane proteins. This gene encodes an EFNA class ephrin. [provided by RefSeq, Jul 2008]

EFNA4-EFNA3 (HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
EFNA3	NM_004952.5	c.503C>T	p.Ala168Val	missense_variant	3/5	ENST00000368408.4	NP_004943.1
EFNA4-EFNA3	NM_001407761.1	c.488C>T	p.Ala163Val	missense_variant	3/5		NP_001394690.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
EFNA3	ENST00000368408.4	c.503C>T	p.Ala168Val	missense_variant	3/5	1	NM_004952.5	ENSP00000357393	P1
EFNA3	ENST00000470294.5	n.188C>T		non_coding_transcript_exon_variant	2/3	3
EFNA3	ENST00000498667.1	n.182C>T		non_coding_transcript_exon_variant	2/4	2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Dec 28, 2022

The c.503C>T (p.A168V) alteration is located in exon 3 (coding exon 3) of the EFNA3 gene. This alteration results from a C to T substitution at nucleotide position 503, causing the alanine (A) at amino acid position 168 to be replaced by a valine (V). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.23
BayesDel_addAF	Uncertain	0.13	D
BayesDel_noAF	Uncertain	-0.050
CADD	Pathogenic	27
DANN	Pathogenic	1.0
DEOGEN2	Benign	0.13	.;T
Eigen	Uncertain	0.41
Eigen_PC	Uncertain	0.46
FATHMM_MKL	Uncertain	0.94	D
LIST_S2	Uncertain	0.88	D;D
M_CAP	Uncertain	0.16	D
MetaRNN	Uncertain	0.45	T;T
MetaSVM	Uncertain	0.52	D
MutationAssessor	Benign	1.0	.;L
MutationTaster	Benign	1.0	D;D;D
PrimateAI	Uncertain	0.67	T
PROVEAN	Benign	-1.1	N;N
REVEL	Uncertain	0.58
Sift	Benign	0.058	T;T
Sift4G	Benign	0.16	T;T
Polyphen		0.91	.;P
Vest4		0.37
MutPred		0.58		.;Gain of sheet (P = 0.1208);
MVP		0.60
MPC		0.50
ClinPred		0.79	D
GERP RS		5.3
Varity_R		0.30
gMVP		0.41

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: chr1-155058413;