NM_002755.4:c.370C>G

Variant names:

• chr15-66436824-C-G
• rs1057519732
• NM_002755.4:c.370C>G

Variant summary

Our verdict is Pathogenic. The variant received 12 ACMG points: 12P and 0B. PM1 PM2 PM5 PP3_Strong PP5_Moderate

The NM_002755.4(MAP2K1):​c.370C>G​(p.Pro124Ala) 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 Likely pathogenic (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. P124S) has been classified as Pathogenic.

• Frequency: Genomes: not found (cov: 32)
• Consequence: MAP2K1 NM_002755.4 missense
• Clinical Significance: Likely pathogenic criteria provided, single submitter P:1
• Conservation: PhyloP100: 7.79
• Publications: 0 publications found

Genes affected

MAP2K1 (HGNC:6840): (mitogen-activated protein kinase kinase 1) The protein encoded by this gene is a member of the dual specificity protein kinase family, which acts as a mitogen-activated protein (MAP) kinase kinase. MAP kinases, also known as extracellular signal-regulated kinases (ERKs), act as an integration point for multiple biochemical signals. This protein kinase lies upstream of MAP kinases and stimulates the enzymatic activity of MAP kinases upon wide variety of extra- and intracellular signals. As an essential component of MAP kinase signal transduction pathway, this kinase is involved in many cellular processes such as proliferation, differentiation, transcription regulation and development. [provided by RefSeq, Jul 2008]

MAP2K1 Gene-Disease associations (from GenCC):

• cardiofaciocutaneous syndrome

  Inheritance: AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: Orphanet, ClinGen
• cardiofaciocutaneous syndrome 3

  Inheritance: AD Classification: DEFINITIVE, STRONG, MODERATE Submitted by: G2P, Ambry Genetics, Labcorp Genetics (formerly Invitae), PanelApp Australia, Genomics England PanelApp
• Noonan syndrome with multiple lentigines

  Inheritance: AD Classification: STRONG, LIMITED Submitted by: Genomics England PanelApp, ClinGen
• Noonan syndrome

  Inheritance: AD Classification: LIMITED Submitted by: ClinGen
• Costello syndrome

  Inheritance: AD Classification: NO_KNOWN Submitted by: ClinGen

ACMG classification

Our verdict: Pathogenic. The variant received 12 ACMG points.

• PM1: In a hotspot region, there are 11 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 3 uncertain in NM_002755.4
• PM2: Very rare variant in population databases, with high coverage
• PM5: Other missense variant is known to change same aminoacid residue: Variant chr15-66436824-C-T is described in ClinVar as Pathogenic. ClinVar VariationId is 375981.Status of the report is reviewed_by_expert_panel, 3 stars.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.953
• PP5: Variant 15-66436824-C-G is Pathogenic according to our data. Variant chr15-66436824-C-G is described in ClinVar as Likely_pathogenic. ClinVar VariationId is 1697313.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MAP2K1	NM_002755.4	c.370C>G	p.Pro124Ala	missense_variant	Exon 3 of 11	ENST00000307102.10	NP_002746.1
MAP2K1	NM_001411065.1	c.304C>G	p.Pro102Ala	missense_variant	Exon 3 of 10		NP_001397994.1
MAP2K1	XM_011521783.4	c.304C>G	p.Pro102Ala	missense_variant	Exon 3 of 11		XP_011520085.1
MAP2K1	XM_017022411.3	c.370C>G	p.Pro124Ala	missense_variant	Exon 3 of 10		XP_016877900.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MAP2K1	ENST00000307102.10	c.370C>G	p.Pro124Ala	missense_variant	Exon 3 of 11	1	NM_002755.4	ENSP00000302486.5

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

ClinVar

Significance: Likely pathogenic

Submissions summary: Pathogenic:1

Revision: criteria provided, single submitter

Submissions by phenotype

Cardiofaciocutaneous syndrome 3 Pathogenic:1

Jul 15, 2022

Institute of Human Genetics, University of Leipzig Medical Center

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

_x000D_ Criteria applied: PM5_STR, PM1, PM2_SUP, PP3 -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.86
BayesDel_addAF	Pathogenic	0.45	D
BayesDel_noAF	Pathogenic	0.41
CADD	Uncertain	25
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.48	T
Eigen	Uncertain	0.54
Eigen_PC	Uncertain	0.55
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.96	D
M_CAP	Pathogenic	0.34	D
MetaRNN	Pathogenic	0.95	D
MetaSVM	Uncertain	0.031	D
MutationAssessor	Uncertain	2.4	M
PhyloP100		7.8
PrimateAI	Pathogenic	0.93	D
PROVEAN	Pathogenic	-5.9	D
REVEL	Pathogenic	0.87
Sift	Benign	0.086	T
Sift4G	Benign	0.092	T
Polyphen		1.0	D
Vest4		0.87
MutPred		0.85		Loss of stability (P = 0.063);
MVP		0.92
MPC		2.5
ClinPred		0.99	D
GERP RS		5.2
Varity_R		0.62
gMVP		0.67
Mutation Taster		=19/81	disease causing

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

Other links and lift over

dbSNP: rs1057519732; hg19: chr15-66729162;