chr15-67600746-A-G

Position:

• chr15-67600746-A-G

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2 PP3_Moderate

The NM_145160.3(MAP2K5):​c.542A>G​(p.Tyr181Cys) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: MAP2K5 NM_145160.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 8.11

Genes affected

MAP2K5 (HGNC:6845): (mitogen-activated protein kinase kinase 5) The protein encoded by this gene is a dual specificity protein kinase that belongs to the MAP kinase kinase family. This kinase specifically interacts with and activates MAPK7/ERK5. This kinase itself can be phosphorylated and activated by MAP3K3/MEKK3, as well as by atypical protein kinase C isoforms (aPKCs). The signal cascade mediated by this kinase is involved in growth factor stimulated cell proliferation and muscle cell differentiation. Three alternatively spliced transcript variants of this gene encoding distinct isoforms have been described. [provided by RefSeq, May 2011]

ACMG classification

Verdict is Uncertain_significance. Variant got 4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.89

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
MAP2K5	NM_145160.3	c.542A>G	p.Tyr181Cys	missense_variant	8/22	ENST00000178640.10

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
MAP2K5	ENST00000178640.10	c.542A>G	p.Tyr181Cys	missense_variant	8/22	1	NM_145160.3	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 29

GnomAD4 genome Cov.: 32

Bravo AF: 0.0000227

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

May 07, 2024

The c.542A>G (p.Y181C) alteration is located in exon 8 (coding exon 8) of the MAP2K5 gene. This alteration results from a A to G substitution at nucleotide position 542, causing the tyrosine (Y) at amino acid position 181 to be replaced by a cysteine (C). 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	0.35
BayesDel_addAF	Pathogenic	0.29	D
BayesDel_noAF	Pathogenic	0.18
CADD	Pathogenic	28
DANN	Uncertain	0.99
DEOGEN2	Benign	0.40	T;.;.;T
Eigen	Pathogenic	0.69
Eigen_PC	Uncertain	0.61
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Pathogenic	0.98	D;D;D;D
M_CAP	Benign	0.057	D
MetaRNN	Pathogenic	0.89	D;D;D;D
MetaSVM	Benign	-0.42	T
MutationAssessor	Benign	2.0	M;M;.;.
MutationTaster	Benign	1.0	D;D;D
PrimateAI	Pathogenic	0.82	D
PROVEAN	Uncertain	-3.5	D;D;D;D
REVEL	Pathogenic	0.65
Sift	Benign	0.12	T;T;T;D
Sift4G	Benign	0.13	T;T;T;D
Polyphen		1.0	D;D;.;.
Vest4		0.97
MutPred		0.80		Gain of methylation at K182 (P = 0.015);Gain of methylation at K182 (P = 0.015);.;.;
MVP		0.78
MPC		0.81
ClinPred		0.96	D
GERP RS		5.3
Varity_R		0.37
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

LitVar

Other links and lift over

dbSNP: rs2085641741; hg19: chr15-67893084;