MAP2K2

Chr 19

mitogen-activated protein kinase kinase 2

Also known as: CFC4, MAPKK2, MEK2, MKK2, PRKMK2

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]

GeneReviewsResearchGenerating clinical summary…

Primary Disease Associations & Inheritance

UniProtCardiofaciocutaneous syndrome 4

Clinical highlights

Gene-disease validity (ClinGen)
Noonan syndrome · ADLimitednot for standalone diagnostic reporting2 gene-disease associations curated in total
Interpreting a novel variant
Gain of function is the curated mechanism (Gene2Phenotype), so a variant that simply removes the protein may not be the pathogenic class here — missense variants in functional domains often carry more weight.Curated gene-level mechanism — a prior for triage, not a per-variant call.
0
Active trials
39
Pubs (1 yr)
P/LP submissions
P/LP missense
0.33
LOEUF· LoF intol.
GOF*
Mechanism· G2P
📖
GeneReview available — MAP2K2
Authoritative clinical overview · Recommended first read
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Some data sources returned errors (1)

omim: Error: OMIM fetch failed: 429

Population Genetics & Constraint

gnomAD v4 — loss-of-function & missense intolerance

LoF intolerant — likely haploinsufficient
LoF Constraint?
0.33LOEUF
pLI 0.967
Z-score 3.66
OE 0.10 (0.040.33)
Highly constrained

Highly LoF-intolerant (top ~10% of genes)

Missense Constraint?
1.87Z-score
OE missense 0.67 (0.590.76)
175 obs / 259.6 exp
Tolerant

Mild missense constraint

Observed / Expected Ratios?
LoF OE?0.10 (0.040.33)
00.351.4
Missense OE?0.67 (0.590.76)
00.61.4
Synonymous OE?1.05
01.21.6
LoF obs/exp: 2 / 19.4Missense obs/exp: 175 / 259.6Syn Z: -0.45

ClinVar Variant Classifications

0 submitted variants in ClinVar

Protein Context — Lollipop Plot

MAP2K2 · protein map & ClinVar variants

Showing all ClinVar variants across the protein. Search a specific variant to highlight its position.

VCEP specificationsRASopathyReleased
Specifications ↗Panel ↗

Clinical Trials

Active and recruiting trials from ClinicalTrials.gov

No active trials found for this gene.

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