NM_030662.4:c.303+8C>G

Variant names:

• chr19-4117411-G-C
• rs199612401
• NM_030662.4:c.303+8C>G

Variant summary

Our verdict is Benign. The variant received -8 ACMG points: 0P and 8B. BA1

This summary comes from the ClinGen Evidence Repository: The filtering allele frequency of the c.303+8C>G variant in the MAP2K2 gene is 0.154% (22/9636) of African chromosomes by the Exome Aggregation Consortium, which is a high enough frequency to be classified as benign based on thresholds defined by the ClinGen RASopathy Expert Panel (BA1; PMID:29493581) LINK:https://erepo.genome.network/evrepo/ui/classification/CA181090/MONDO:0021060/004

• Frequency:
  • Genomes: 𝑓 0.00051 (0 hom., cov: 33)
  • Exomes 𝑓: 0.000041 (0 hom.)
• Consequence: MAP2K2 NM_030662.4 splice_region, intron
• Scores: Splicing: ADA: 0.00005869
• Clinical Significance: Benign reviewed by expert panel B:6
• Conservation: PhyloP100: -0.198
• Publications: 0 publications found

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

ACMG classification

Our verdict: Benign. The variant received -8 ACMG points.

• BA1: For more information check the summary or visit ClinGen Evidence Repository.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_030662.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MAP2K2	NM_030662.4	MANE Select	c.303+8C>G		splice_region intron	N/A	NP_109587.1
	MAP2K2	NM_001440688.1		c.303+8C>G		splice_region intron	N/A	NP_001427617.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MAP2K2	ENST00000262948.10	TSL:1 MANE Select	c.303+8C>G		splice_region intron	N/A	ENSP00000262948.4
	MAP2K2	ENST00000394867.9	TSL:5	n.742+8C>G		splice_region intron	N/A
	MAP2K2	ENST00000599345.1	TSL:5	n.500+8C>G		splice_region intron	N/A

Frequencies

GnomAD3 genomes AF: 0.000493 AC: 75 AN: 152182 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.00162

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000393

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.000956

GnomAD2 exomes AF: 0.000144 AC: 36 AN: 249840 AF XY: 0.000133

Gnomad AFR exome AF: 0.00199

Gnomad AMR exome AF: 0.0000869

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.000164

GnomAD4 exome AF: 0.0000411 AC: 60 AN: 1458986 Hom.: 0 Cov.: 36 AF XY: 0.0000468 AC XY: 34 AN XY: 725776

African (AFR) AF: 0.00144 AC: 48 AN: 33418

American (AMR) AF: 0.0000671 AC: 3 AN: 44702

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26120

East Asian (EAS) AF: 0.00 AC: 0 AN: 39684

South Asian (SAS) AF: 0.00 AC: 0 AN: 86204

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 52154

Middle Eastern (MID) AF: 0.000412 AC: 2 AN: 4856

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1111616

Other (OTH) AF: 0.000116 AC: 7 AN: 60232

GnomAD4 genome AF: 0.000506 AC: 77 AN: 152300 Hom.: 0 Cov.: 33 AF XY: 0.000550 AC XY: 41 AN XY: 74480

African (AFR) AF: 0.00166 AC: 69 AN: 41570

American (AMR) AF: 0.000392 AC: 6 AN: 15298

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3470

East Asian (EAS) AF: 0.00 AC: 0 AN: 5186

South Asian (SAS) AF: 0.00 AC: 0 AN: 4826

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10616

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 294

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 68014

Other (OTH) AF: 0.000946 AC: 2 AN: 2114

Alfa AF: 0.0000712 Hom.: 0

Bravo AF: 0.000570

ClinVar

ClinVar submissions as Germline

Significance: Benign

Revision: reviewed by expert panel

Pathogenic	VUS	Benign	Condition
-	-	2	not provided (2)
-	-	2	RASopathy (2)
-	-	1	MAP2K2-related disorder (1)
-	-	1	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.90
CADD	Benign	0.82
DANN	Benign	0.38
PhyloP100		-0.20

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Benign	0.000059
dbscSNV1_RF	Benign	0.020
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: rs199612401; hg19: chr19-4117409;