Genetic Variant MAP2K2:p.Ile220Leu (chr19-4101066-T-G) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_030662.4(MAP2K2):c.658A>C(p.Ile220Leu) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. 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. I220V) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0 ( 0 hom. )

Failed GnomAD Quality Control

Consequence

MAP2K2
NM_030662.4 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 7.97

Publications

0 publications found

Variant links:

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]

MAP2K2 Gene-Disease associations (from GenCC):

cardiofaciocutaneous syndrome
Inheritance: AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: Orphanet, ClinGen
cardiofaciocutaneous syndrome 4
Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: G2P, PanelApp Australia, Ambry Genetics, Genomics England PanelApp, Labcorp Genetics (formerly Invitae)
neurofibromatosis-Noonan syndrome
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
Noonan syndrome
Inheritance: AD Classification: LIMITED Submitted by: ClinGen

MAP2K2 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 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 link	c.658A>C	p.Ile220Leu	missense_variant	Exon 6 of 11	ENST00000262948.10	NP_109587.1	P36507
MAP2K2	NM_001440688.1 link	c.658A>C	p.Ile220Leu	missense_variant	Exon 6 of 9		NP_001427617.1
MAP2K2	NM_001440689.1 link	c.88A>C	p.Ile30Leu	missense_variant	Exon 4 of 9		NP_001427618.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MAP2K2	ENST00000262948.10 link	c.658A>C	p.Ile220Leu	missense_variant	Exon 6 of 11	1	NM_030662.4	ENSP00000262948.4		P36507

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

Data not reliable, filtered out with message: AC0;AS_VQSR

AF:

0.00

AC:

AN:

1437402

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

712920

African (AFR)

AF:

0.00

AC:

AN:

32766

American (AMR)

AF:

0.00

AC:

AN:

41034

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25688

East Asian (EAS)

AF:

0.00

AC:

AN:

38138

South Asian (SAS)

AF:

0.00

AC:

AN:

82776

European-Finnish (FIN)

AF:

0.00

AC:

AN:

51680

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5464

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1100414

Other (OTH)

AF:

0.00

AC:

AN:

59442

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.86

BayesDel_addAF

Pathogenic

0.27

BayesDel_noAF

Pathogenic

0.15

CADD

Pathogenic

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.21

T;T

Eigen

Uncertain

0.57

Eigen_PC

Uncertain

0.54

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.95

D;D

M_CAP

Pathogenic

0.41

MetaRNN

Uncertain

0.59

D;D

MetaSVM

Uncertain

0.69

MutationAssessor

Benign

0.88

L;.

PhyloP100

8.0

PrimateAI

Pathogenic

0.90

PROVEAN

Benign

-1.8

N;N

REVEL

Pathogenic

0.78

Sift

Uncertain

0.0050

D;D

Sift4G

Uncertain

0.018

D;D

Polyphen

1.0

D;.

Vest4

0.58

MutPred

0.51

Loss of loop (P = 0.2237);.;

MVP

0.80

MPC

1.0

ClinPred

0.86

GERP RS

4.2

PromoterAI

-0.071

Neutral

(source)

Varity_R

0.90

gMVP

0.41

Mutation Taster

=26/74

disease causing

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.040

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over