chr19-4102388-T-A

Position:

• chr19-4102388-T-A

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2 PP3

The NM_030662.4(MAP2K2):​c.516A>T​(p.Lys172Asn) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. K172E) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 33)
• Consequence: MAP2K2 NM_030662.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 1.23

Genes affected

MAP2K2 (HGNC:6842): (mitogen-activated protein kinase kinase 2) The protein encoded by this gene is a dual specificity protein kinase that belongs to the MAP kinase kinase family. This kinase is known to play a critical role in mitogen growth factor signal transduction. It phosphorylates and thus activates MAPK1/ERK2 and MAPK2/ERK3. The activation of this kinase itself is dependent on the Ser/Thr phosphorylation by MAP kinase kinase kinases. Mutations in this gene cause cardiofaciocutaneous syndrome (CFC syndrome), a disease characterized by heart defects, cognitive disability, and distinctive facial features similar to those found in Noonan syndrome. The inhibition or degradation of this kinase is also found to be involved in the pathogenesis of Yersinia and anthrax. A pseudogene, which is located on chromosome 7, has been identified for this gene. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Uncertain_significance. Variant got 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.759

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
MAP2K2	NM_030662.4	c.516A>T	p.Lys172Asn	missense_variant	4/11	ENST00000262948.10
MAP2K2	XM_006722799.3	c.516A>T	p.Lys172Asn	missense_variant	4/9
MAP2K2	XM_047439100.1	c.-55A>T		5_prime_UTR_variant	2/9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
MAP2K2	ENST00000262948.10	c.516A>T	p.Lys172Asn	missense_variant	4/11	1	NM_030662.4	P1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.90
BayesDel_addAF	Benign	-0.064	T
BayesDel_noAF	Benign	-0.33
CADD	Uncertain	24
DANN	Uncertain	1.0
DEOGEN2	Benign	0.35	T;T
Eigen	Benign	-0.11
Eigen_PC	Benign	-0.21
FATHMM_MKL	Uncertain	0.94	D
LIST_S2	Uncertain	0.96	D;D
M_CAP	Uncertain	0.11	D
MetaRNN	Pathogenic	0.76	D;D
MetaSVM	Benign	-0.56	T
MutationAssessor	Benign	1.3	L;.
MutationTaster	Benign	1.0	D;D
PrimateAI	Pathogenic	0.83	D
PROVEAN	Uncertain	-3.2	D;D
REVEL	Uncertain	0.30
Sift	Uncertain	0.0030	D;D
Sift4G	Uncertain	0.012	D;D
Polyphen		0.96	D;.
Vest4		0.85
MutPred		0.66		Loss of methylation at K172 (P = 0.0258);.;
MVP		0.62
MPC		1.2
ClinPred		0.97	D
GERP RS		-1.7
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.80
gMVP		0.73

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: chr19-4102386;