rs1555420826

Variant names:

• chr15-66487249-C-T
• rs1555420826
• NM_002755.4:c.917C>T

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM2 BP4

The NM_002755.4(MAP2K1):​c.917C>T​(p.Pro306Leu) variant causes a missense change. The variant allele was found at a frequency of 0.000000684 in 1,461,814 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: MAP2K1 NM_002755.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 6.09
• 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: ClinGen, Orphanet
• cardiofaciocutaneous syndrome 3

  Inheritance: AD Classification: DEFINITIVE, STRONG, MODERATE Submitted by: G2P, Genomics England PanelApp, Labcorp Genetics (formerly Invitae), Ambry Genetics
• 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
• Noonan syndrome-like disorder with loose anagen hair

  Inheritance: AD Classification: NO_KNOWN Submitted by: ClinGen

ACMG classification

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.40210608).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_002755.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MAP2K1	NM_002755.4	MANE Select	c.917C>T	p.Pro306Leu	missense	Exon 8 of 11	NP_002746.1	Q02750-1
	MAP2K1	NM_001411065.1		c.773C>T	p.Pro258Leu	missense	Exon 7 of 10	NP_001397994.1	A0A8I5KYS7

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MAP2K1	ENST00000307102.10	TSL:1 MANE Select	c.917C>T	p.Pro306Leu	missense	Exon 8 of 11	ENSP00000302486.5	Q02750-1
	MAP2K1	ENST00000685172.1		c.917C>T	p.Pro306Leu	missense	Exon 8 of 10	ENSP00000509604.1	A0A8I5KYB4
	MAP2K1	ENST00000689951.1		c.968C>T	p.Pro323Leu	missense	Exon 9 of 12	ENSP00000509308.1	A0A8I5KRX5

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461814 Hom.: 0 Cov.: 31 AF XY: 0.00000138 AC XY: 1 AN XY: 727218

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26134

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.00 AC: 0 AN: 86256

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53414

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 8.99e-7 AC: 1 AN: 1111944

Other (OTH) AF: 0.00 AC: 0 AN: 60394

GnomAD4 genome Cov.: 32

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	RASopathy (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.25
BayesDel_addAF	Uncertain	0.13	D
BayesDel_noAF	Uncertain	-0.060
CADD	Uncertain	25
DANN	Uncertain	0.99
DEOGEN2	Benign	0.40	T
Eigen	Benign	-0.033
Eigen_PC	Benign	0.12
FATHMM_MKL	Uncertain	0.94	D
LIST_S2	Uncertain	0.95	D
M_CAP	Uncertain	0.22	D
MetaRNN	Benign	0.40	T
MetaSVM	Uncertain	0.26	D
MutationAssessor	Benign	0.97	L
PhyloP100		6.1
PrimateAI	Pathogenic	0.85	D
PROVEAN	Uncertain	-2.6	D
REVEL	Uncertain	0.55
Sift	Benign	0.078	T
Sift4G	Benign	0.25	T
Polyphen		0.26	B
Vest4		0.49
MutPred		0.55		Loss of disorder (P = 0.0236)
MVP		0.78
MPC		1.3
ClinPred		0.97	D
GERP RS		4.9
Varity_R		0.35
gMVP		0.61
Mutation Taster		=43/57	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: rs1555420826; hg19: chr15-66779587;