chr19-4090589-C-A

Variant names:

• chr19-4090589-C-A
• rs397517410
• NM_030662.4:c.*9G>T

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_030662.4(MAP2K2):​c.*9G>T variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: MAP2K2 NM_030662.4 3_prime_UTR
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -1.91
• 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: Likely_benign. The variant received -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.86).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MAP2K2	NM_030662.4	c.*9G>T		3_prime_UTR_variant	Exon 11 of 11	ENST00000262948.10	NP_109587.1
MAP2K2	NM_001440688.1	c.*9G>T		3_prime_UTR_variant	Exon 9 of 9		NP_001427617.1
MAP2K2	NM_001440689.1	c.*9G>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	c.*9G>T		3_prime_UTR_variant	Exon 11 of 11	1	NM_030662.4	ENSP00000262948.4

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 1395910 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 688704

African (AFR) AF: 0.00 AC: 0 AN: 31548

American (AMR) AF: 0.00 AC: 0 AN: 35728

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25160

East Asian (EAS) AF: 0.00 AC: 0 AN: 35754

South Asian (SAS) AF: 0.00 AC: 0 AN: 79176

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 48272

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 4982

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1077450

Other (OTH) AF: 0.00 AC: 0 AN: 57840

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.86
CADD	Benign	0.41
DANN	Benign	0.49
PhyloP100		-1.9
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1

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: rs397517410; hg19: chr19-4090587;