19-4110557-G-T

Variant names:

• chr19-4110557-G-T
• NM_030662.4:c.402C>A

Variant summary

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

The NM_030662.4(MAP2K2):​c.402C>A​(p.Tyr134*) variant causes a stop gained 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. Variant results in nonsense mediated mRNA decay.

• Frequency: Genomes: not found (cov: 32)
• Consequence: MAP2K2 NM_030662.4 stop_gained
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.0830

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 2 ACMG points.

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

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MAP2K2	NM_030662.4	c.402C>A	p.Tyr134*	stop_gained	Exon 3 of 11	ENST00000262948.10	NP_109587.1
MAP2K2	XM_006722799.3	c.402C>A	p.Tyr134*	stop_gained	Exon 3 of 9		XP_006722862.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MAP2K2	ENST00000262948.10	c.402C>A	p.Tyr134*	stop_gained	Exon 3 of 11	1	NM_030662.4	ENSP00000262948.4
MAP2K2	ENST00000394867.9	n.841C>A		non_coding_transcript_exon_variant	Exon 2 of 10	5
MAP2K2	ENST00000599345.1	n.599C>A		non_coding_transcript_exon_variant	Exon 3 of 7	5
MAP2K2	ENST00000687128.1	n.841C>A		non_coding_transcript_exon_variant	Exon 2 of 7

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Pathogenic	0.50	D
BayesDel_noAF	Pathogenic	0.49
CADD	Pathogenic	36
DANN	Uncertain	1.0
Eigen	Uncertain	0.43
Eigen_PC	Uncertain	0.24
FATHMM_MKL	Benign	0.75	D
Vest4		0.86
GERP RS		0.98

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: chr19-4110555;