rs377675706

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 0P and 2B. BP7BP5

This summary comes from the ClinGen Evidence Repository: The c.*8C>T variant in the MAP2K2 gene is located in the untranslated mRNA region downstream of the termination codon. The filtering allele frequency in gnomAD v4.1.0 is 0.01257%(172/1145270 alleles) in non-Finnish European population (PM2_Supporting/BS1/BA1 are not met). This variant is at a nucleotide that is not highly conserved and is not predicted to impact splicing (BP7). The c.*8C>T variant has been observed in at least 6 individuals who underwent testing for RASopathies (PS4 not met; GeneDx, LMM internal data; GTR ID's: 26957, 21766; SCV000063150.4, SCV000170190.9). This variant has been identified in a patient with an alternate molecular basis for disease (BP5; GeneDx internal data, SCV000170190.9). In summary, this variant meets criteria to be classified as likely benign for autosomal dominant RASopathies based on the ACMG/AMP criteria applied, as specified by the ClinGen RASopathy Variant Curation Expert Panel: BP5, BP7 (Specification Version 2.1, 09/17/2024) LINK:https://erepo.genome.network/evrepo/ui/classification/CA137903/MONDO:0021060/048

Frequency

Genomes: 𝑓 0.00012 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00013 ( 0 hom. )

Consequence

MAP2K2
NM_030662.4 3_prime_UTR

Scores

Clinical Significance

Likely benign reviewed by expert panel U:1B:4

Conservation

PhyloP100: -0.0700

Publications

1 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: Likely_benign. The variant received -2 ACMG points.

BP5

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

BP7

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

Transcripts

RefSeq

Gene	Transcript	HGVSc	Effect	Exon rank	MANE	Protein	UniProt
MAP2K2	NM_030662.4 link	c.*8C>T	3_prime_UTR_variant	Exon 11 of 11	ENST00000262948.10	NP_109587.1	P36507
MAP2K2	NM_001440688.1 link	c.*8C>T	3_prime_UTR_variant	Exon 9 of 9		NP_001427617.1
MAP2K2	NM_001440689.1 link	c.*8C>T	3_prime_UTR_variant	Exon 9 of 9		NP_001427618.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MAP2K2	ENST00000262948.10 link	c.*8C>T		3_prime_UTR_variant	Exon 11 of 11	1	NM_030662.4	ENSP00000262948.4		P36507

Frequencies

GnomAD3 genomes

AF:

0.000125

AC:

AN:

152210

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000654

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000386

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000235

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000109

AC:

AN:

155612

AF XY:

0.000134

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000404

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000884

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000235

Gnomad OTH exome

AF:

0.000227

GnomAD4 exome

AF:

0.000130

AC:

182

AN:

1395756

Hom.:

Cov.:

AF XY:

0.000135

AC XY:

AN XY:

688692

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

31544

American (AMR)

AF:

0.0000280

AC:

AN:

35732

Ashkenazi Jewish (ASJ)

AF:

0.0000397

AC:

AN:

25162

East Asian (EAS)

AF:

0.000196

AC:

AN:

35756

South Asian (SAS)

AF:

0.0000253

AC:

AN:

79168

European-Finnish (FIN)

AF:

0.00

AC:

AN:

48278

Middle Eastern (MID)

AF:

0.000199

AC:

AN:

5030

European-Non Finnish (NFE)

AF:

0.000145

AC:

156

AN:

1077238

Other (OTH)

AF:

0.000242

AC:

AN:

57848

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.489

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.000125

AC:

AN:

152210

Hom.:

Cov.:

AF XY:

0.0000941

AC XY:

AN XY:

74356

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41458

American (AMR)

AF:

0.0000654

AC:

AN:

15292

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.000386

AC:

AN:

5178

South Asian (SAS)

AF:

0.00

AC:

AN:

4832

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10626

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.000235

AC:

AN:

68032

Other (OTH)

AF:

0.00

AC:

AN:

2092

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.478

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.000200

Hom.:

Bravo

AF:

0.000110

Asia WGS

AF:

0.00173

AC:

AN:

3478

ClinVar

Significance: Likely benign

Submissions summary: Uncertain:1Benign:4

Revision: reviewed by expert panel

LINK: link

Submissions by phenotype

not specified

Uncertain:1Benign:2

Feb 10, 2009

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Significance:Uncertain significance

Review Status:no assertion criteria provided

Collection Method:clinical testing

- -

Nov 27, 2013

GeneDx

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -

Aug 13, 2018

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Variant summary: MAP2K2 c.*8C>T is located in the untranslated mRNA region downstream of the termination codon. The variant allele was found at a frequency of 0.00014 in 179598 control chromosomes. The observed variant frequency is approximately 55 fold of the estimated maximal expected allele frequency for a pathogenic variant in MAP2K2 causing Noonan Syndrome and Related Conditions phenotype (2.5e-06), strongly suggesting that the variant is benign. c.*8C>T has been reported in the literature in individuals affected with autism. This report does not provide unequivocal conclusions about association of the variant with Noonan Syndrome and Related Conditions. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. ClinGen RASopathy Expert Panel has submitted clinical-significance assessments for this variant to ClinVar after 2014 and classified the variant as likely benign based on ACMG criteria BP5 and BP7 although the variant is not a synonymous variant type. Based on the evidence outlined above, the variant was classified as benign. -

RASopathy

Benign:1

Sep 17, 2024

ClinGen RASopathy Variant Curation Expert Panel

Significance:Likely benign

Review Status:reviewed by expert panel

Collection Method:curation

The c.*8C>T variant in the MAP2K2 gene is located in the untranslated mRNA region downstream of the termination codon. The filtering allele frequency in gnomAD v4.1.0 is 0.01257%(172/1145270 alleles) in non-Finnish European population (PM2_Supporting/BS1/BA1 are not met). This variant is at a nucleotide that is not highly conserved and is not predicted to impact splicing (BP7). The c.*8C>T variant has been observed in at least 6 individuals who underwent testing for RASopathies (PS4 not met; GeneDx, LMM internal data; GTR ID's: 26957, 21766; SCV000063150.4, SCV000170190.9). This variant has been identified in a patient with an alternate molecular basis for disease (BP5; GeneDx internal data, SCV000170190.9). In summary, this variant meets criteria to be classified as likely benign for autosomal dominant RASopathies based on the ACMG/AMP criteria applied, as specified by the ClinGen RASopathy Variant Curation Expert Panel: BP5, BP7 (Specification Version 2.1, 09/17/2024) -

Noonan syndrome and Noonan-related syndrome

Benign:1

May 13, 2021

Genome Diagnostics Laboratory, The Hospital for Sick Children

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.94

CADD

Benign

3.7

(source)

DANN

Benign

0.58

PhyloP100

-0.070

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Mutation Taster

=100/0

polymorphism

(source)

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

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rs377675706

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over