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Gene | MAP2K1 |
Variant | L115P |
Impact List | missense |
Protein Effect | gain of function |
Gene Variant Descriptions | MAP2K1 L115P lies within the protein kinase domain of the Map2k1 protein (UniProt.org). L115P confers a gain of function on the kinase activity of the Map2k1 protein, as demonstrated by increased autophosphorylation in cell culture (PMID: 29753091) and increased basal kinase activity in an in vitro assay (PMID: 12370306), and is also associated with decreased binding and resistance to Mek inhibitors (PMID: 12370306, PMID: 19915144, PMID: 26399658). |
Associated Drug Resistance | Y |
Transcript | NM_002755.3 |
gDNA | chr15:g.66436798T>C |
cDNA | c.344T>C |
Protein | p.L115P |
Source Database | RefSeq |
Genome Build | GRCh38/hg38 |
Transcript | gDNA | cDNA | Protein | Source Database | Genome Build |
---|---|---|---|---|---|
XM_017022411.2 | chr15:g.66436798T>C | c.344T>C | p.L115P | RefSeq | GRCh38/hg38 |
NM_002755 | chr15:g.66436798T>C | c.344T>C | p.L115P | RefSeq | GRCh38/hg38 |
NM_002755.3 | chr15:g.66436798T>C | c.344T>C | p.L115P | RefSeq | GRCh38/hg38 |
XM_017022411 | chr15:g.66436798T>C | c.344T>C | p.L115P | RefSeq | GRCh38/hg38 |
Molecular Profile | Indication/Tumor Type | Response Type | Therapy Name | Approval Status | Evidence Type | Efficacy Evidence | References |
---|---|---|---|---|---|---|---|
MAP2K1 L115P | Advanced Solid Tumor | resistant | CI-1040 | Preclinical - Biochemical | Actionable | In a preclinical study, CI-1040 (PD184352) did not inhibit kinase activity of MAP2K1 L115P in an in vitro assay and failed to suppress Erk phosphorylation in cells expressing MAP2K1 L115P in culture (PMID: 12370306). | 12370306 |
BRAF V600E MAP2K1 L115P | colorectal cancer | resistant | Dabrafenib + Trametinib | Preclinical - Cell culture | Actionable | In a preclinical study, colorectal cancer cells harboring BRAF V600E developed sustained activation of Mapk signaling and resistance to Tafinlar (dabrafenib) and Mekinist (trametinib) combination treatment in culture, likely due to the acquired secondary resistance mutation MAP2K1 L115P (PMID: 27312529). | 27312529 |
BRAF V600E MAP2K1 L115P | colorectal cancer | sensitive | Dabrafenib + SCH772984 | Preclinical - Cell culture | Actionable | In a preclinical study, combination therapy consisting of Tafinlar (dabrafenib) and SCH772984 inhibited survival of colorectal cancer cells harboring BRAF V600E that acquired a MAP2K1 L115P mutation and subsequent resistance to Tafinlar (dabrafenib) and Mekinist (trametinib) combination treatment in culture (PMID: 27312529). | 27312529 |
BRAF V600E MAP2K1 L115P | melanoma | conflicting | Vemurafenib | Preclinical - Cell culture | Actionable | In a preclinical study, Zelboraf (vemurafenib) inhibited proliferation of melanoma cells harboring BRAF V600E and expressing MAP2K1 L115P in culture (PMID: 28655712). | 28655712 |
BRAF V600E MAP2K1 L115P | melanoma | conflicting | Vemurafenib | Preclinical - Cell culture | Actionable | In a preclinical study, a melanoma cell line harboring BRAF V600E and expressing MAP2K1 L115P was resistant to Zelboraf (vemurafenib) in culture (PMID: 28986383). | 28986383 |
BRAF V600E MAP2K1 L115P | colorectal cancer | sensitive | Cetuximab + Dabrafenib | Preclinical - Cell culture | Actionable | In a preclinical study, combination therapy consisting of Erbitux (cetuximab) and Tafinlar (dabrafenib) inhibited survival of colorectal cancer cells harboring BRAF V600E that acquired a MAP2K1 L115P mutation and subsequent resistance to Tafinlar (dabrafenib) and Mekinist (trametinib) combination treatment in culture (PMID: 27312529). | 27312529 |
BRAF V600E MAP2K1 L115P | melanoma | conflicting | Trametinib | Preclinical - Cell culture | Actionable | In a preclinical study, Mekinist (trametinib) inhibited growth of a melanoma cell line harboring BRAF V600E and expressing MAP2K1 L115P in culture (PMID: 28986383). | 28986383 |
BRAF V600E MAP2K1 L115P | melanoma | conflicting | Trametinib | Preclinical - Cell culture | Actionable | In a preclinical study, melanoma cells harboring BRAF V600E and expressing MAP2K1 L115P demonstrated resistance to treatment with Mekinist (trametinib) in culture (PMID: 28655712). | 28655712 |
BRAF V600E MAP2K1 L115P | colorectal cancer | sensitive | SCH772984 | Preclinical - Cell culture | Actionable | In a preclinical study, SCH772984 inhibited survival of colorectal cancer cells harboring BRAF V600E that acquired a MAP2K1 L115P mutation and subsequent resistance to Tafinlar (dabrafenib) and Mekinist (trametinib) combination treatment in culture (PMID: 27312529). | 27312529 |
BRAF V600E MAP2K1 L115P | colorectal cancer | sensitive | Cetuximab + Dabrafenib + SCH772984 | Preclinical - Cell culture | Actionable | In a preclinical study, combination therapy consisting of Erbitux (cetuximab), Tafinlar (dabrafenib), and SCH772984 inhibited survival of colorectal cancer cells harboring BRAF V600E that acquired a MAP2K1 L115P mutation and subsequent resistance to Tafinlar (dabrafenib) and Mekinist (trametinib) combination treatment in culture (PMID: 27312529). | 27312529 |
BRAF V600E MAP2K1 L115P | colorectal cancer | sensitive | Cetuximab + Dabrafenib + Trametinib | Preclinical - Cell culture | Actionable | In a preclinical study, combination therapy consisting of Erbitux (cetuximab), Tafinlar (dabrafenib), and Mekinist (trametinib) inhibited survival of colorectal cancer cells harboring BRAF V600E that acquired a MAP2K1 L115P mutation and subsequent resistance to Tafinlar (dabrafenib) and Mekinist (trametinib) combination treatment in culture (PMID: 27312529). | 27312529 |
BRAF V600E MAP2K1 L115P | colorectal cancer | sensitive | Cetuximab + Vemurafenib | Preclinical - Cell culture | Actionable | In a preclinical study, combination therapy consisting of Erbitux (cetuximab) and Zelboraf (vemurafenib) inhibited survival of colorectal cancer cells harboring BRAF V600E that acquired a MAP2K1 L115P mutation and subsequent resistance to Tafinlar (dabrafenib) and Mekinist (trametinib) combination treatment in culture (PMID: 27312529). | 27312529 |
BRAF V600E MAP2K1 L115P | colorectal cancer | sensitive | Cetuximab + Encorafenib | Preclinical - Cell culture | Actionable | In a preclinical study, combination therapy consisting of Erbitux (cetuximab) and Encorafenib (LGX818) inhibited survival of colorectal cancer cells harboring BRAF V600E that acquired a MAP2K1 L115P mutation and subsequent resistance to Tafinlar (dabrafenib) and Mekinist (trametinib) combination treatment in culture (PMID: 27312529). | 27312529 |
BRAF V600E MAP2K1 L115P | colorectal cancer | sensitive | Cetuximab + SCH772984 | Preclinical - Cell culture | Actionable | In a preclinical study, combination therapy consisting of Erbitux (cetuximab) and SCH772984 inhibited survival of colorectal cancer cells harboring BRAF V600E that acquired a MAP2K1 L115P mutation and subsequent resistance to Tafinlar (dabrafenib) and Mekinist (trametinib) combination treatment in culture (PMID: 27312529). | 27312529 |
BRAF V600E MAP2K1 L115P | melanoma | sensitive | DEL-22379 | Preclinical - Cell culture | Actionable | In a preclinical study, DEL-22379 inhibited growth of a melanoma cell line harboring BRAF V600E and expressing MAP2K1 L115P in culture (PMID: 26267534). | 26267534 |
BRAF V600E MAP2K1 L115P | melanoma | resistant | PD-0325901 | Preclinical | Actionable | In a preclinical study, over expression of MAPK21 L115P in melanoma cells harboring BRAF V600E resulted in insensitivity to growth inhibition by PD-0325901 in cell culture (PMID: 26267534). | 26267534 |
BRAF V600E MAP2K1 L115P | colorectal cancer | sensitive | Alpelisib + Cetuximab + Encorafenib | Preclinical - Cell culture | Actionable | In a preclinical study, combination therapy consisting of Erbitux (cetuximab), Encorafenib (LGX818) and Alpelisib (BYL719) inhibited survival of colorectal cancer cells harboring BRAF V600E that acquired a MAP2K1 L115P mutation and subsequent resistance to Tafinlar (dabrafenib) and Mekinist (trametinib) combination treatment in culture (PMID: 27312529). | 27312529 |
BRAF V600E MAP2K1 L115P | melanoma | resistant | Selumetinib | Preclinical - Cell culture | Actionable | In a preclinical study, expression of MAP2K1 L115P in melanoma cells harboring BRAF V600E conferred resistance to Koselugo (selumetinib) treatment in culture (PMID: 19915144). | 19915144 |
BRAF V600E MAP2K1 L115P | melanoma | resistant | CI-1040 | Preclinical - Cell culture | Actionable | In a preclinical study, expression of MAP2K1 L115P in melanoma cells harboring BRAF V600E conferred resistance to CI-1040 (PD184352) treatment in culture (PMID: 19915144). | 19915144 |
Molecular Profile | Protein Effect | Treatment Approaches |
---|---|---|
MAP2K1 L115P | gain of function | |
BRAF V600E MAP2K1 L115P |