vabase

MAP2K1 F53C

c.158T>GNM_002755.415-66435104-T-G
RAS-MAPK gain of function transversion Cancer hotspot Absent from gnomAD AlphaMissense: likely pathogenic CCLA

Reports 1 in CCLA

ISSVA entityAllele fractionSources
CCLA gDNA (leftover cells): 0.66-0.83%; cfDNA (thoracic duct): 9.8-12.4%

Position in MAP2K1 1 catalogued variant in this gene

Protein kinase (68–361)Protein kina…1393 aaF53C

Pathway and targeted therapy

Variant in the RAS-MAPK pathway. Repurposed drugs already used in the clinic for this pathway: trametinib and other MEK inhibitors.

Open and recent trials (3 in vascular / lymphatic anomalies for trametinib)

Primary sources 1

  1. Genomic profiling informs diagnoses and treatment in vascular anomalies.
    Li D, Sheppard SE, March ME, Battig MR, Surrey LF, Srinivasan AS, Matsuoka LS, Tian L, Wang F, Seiler C, Dayneka J, Borst AJ, Matos MC, Paulissen SM, Krishnamurthy G, Nriagu B, Sikder T, Casey M, Williams L, Rangu S, O'Connor N, Thomas A, Pinto E, Hou C, Nguyen K, Pellegrino da Silva R, Chehimi SN, Kao C, Biroc L, Britt AD, Queenan M, Reid JR, Napoli JA, Low DM, Vatsky S, Treat J, Smith CL, Cahill AM, Snyder KM, Adams DM, Dori Y, Hakonarson H. · Nat Med · 2023

Mentioned in 5 publications indexed by Europe PMC.

Annotations refreshed 2026-10-09 from Europe PMC, ClinVar, ClinicalTrials.gov, gnomAD, and Genome Nexus. Coordinates handled per assembly (gnomAD GRCh38, Genome Nexus GRCh37).