chr2-221426537-T-C

Position:

• chr2-221426537-T-C

Variant summary

Our verdict is Likely benign. Variant got -1 ACMG points: 3P and 4B. PP2 PP3_Moderate BS2

The NM_004438.5(EPHA4):​c.2773A>G​(p.Met925Val) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000041 in 1,461,812 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000041 (0 hom.)
• Consequence: EPHA4 NM_004438.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 8.02

Genes affected

EPHA4 (HGNC:3388): (EPH receptor A4) 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. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jan 2015]

ACMG classification

Verdict is Likely_benign. Variant got -1 ACMG points.

• PP2: Missense variant in gene, where missense usually causes diseases (based on misZ statistic), EPHA4. . Gene score misZ 2.8852 (greater than the threshold 3.09). Trascript score misZ 4.018 (greater than threshold 3.09). GenCC has associacion of gene with complex neurodevelopmental disorder.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.87
• BS2: High AC in GnomAdExome4 at 6 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
EPHA4	NM_004438.5	c.2773A>G	p.Met925Val	missense_variant	16/18	ENST00000281821.7	NP_004429.1
EPHA4	NM_001304536.2	c.2773A>G	p.Met925Val	missense_variant	17/19		NP_001291465.1
EPHA4	NM_001363748.2	c.2773A>G	p.Met925Val	missense_variant	16/18		NP_001350677.1
EPHA4	NM_001304537.2	c.2620A>G	p.Met874Val	missense_variant	15/17		NP_001291466.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
EPHA4	ENST00000281821.7	c.2773A>G	p.Met925Val	missense_variant	16/18	1	NM_004438.5	ENSP00000281821.2

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 0.00000410 AC: 6 AN: 1461812 Hom.: 0 Cov.: 31 AF XY: 0.00000275 AC XY: 2 AN XY: 727210

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000450

Gnomad4 OTH exome AF: 0.0000166

GnomAD4 genome Cov.: 33

EpiCase AF: 0.00

EpiControl AF: 0.0000593

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

Jan 26, 2022

The c.2773A>G (p.M925V) alteration is located in exon 16 (coding exon 16) of the EPHA4 gene. This alteration results from a A to G substitution at nucleotide position 2773, causing the methionine (M) at amino acid position 925 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	Uncertain	0.37
BayesDel_addAF	Pathogenic	0.35	D
BayesDel_noAF	Pathogenic	0.27
CADD	Uncertain	24
DANN	Uncertain	0.99
DEOGEN2	Benign	0.34	T;.;T
Eigen	Uncertain	0.41
Eigen_PC	Uncertain	0.52
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Pathogenic	0.98	D;D;.
M_CAP	Uncertain	0.23	D
MetaRNN	Pathogenic	0.87	D;D;D
MetaSVM	Uncertain	0.31	D
MutationAssessor	Pathogenic	3.0	M;.;M
PrimateAI	Uncertain	0.71	T
PROVEAN	Uncertain	-3.0	D;D;D
REVEL	Pathogenic	0.80
Sift	Uncertain	0.0010	D;D;D
Sift4G	Uncertain	0.0020	D;D;D
Polyphen		0.13	B;.;B
Vest4		0.82
MutPred		0.70		Gain of methylation at K924 (P = 0.0172);Gain of methylation at K924 (P = 0.0172);Gain of methylation at K924 (P = 0.0172);
MVP		0.92
MPC		0.61
ClinPred		0.98	D
GERP RS		5.8
Varity_R		0.90
gMVP		0.82

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: chr2-222291257;