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Gene MAP2K1
Variant K57N
Impact List missense
Protein Effect gain of function
Gene Variant Descriptions MAP2K1 K57N lies within the negative regulatory region of the Map2k1 protein (PMID: 24241536). K57N confers a gain of function on the Map2k1 protein as demonstrated by increased autophosphorylation (PMID: 29753091), increased Erk phosphorylation (PMID: 18632602, PMID: 29753091), increased cell proliferation and cell viability as compared to wild-type Map2k1, in two different cell lines (PMID: 29533785, PMID: 18632602), and also demonstrates resistance to some Mek and Braf inhibitors (PMID: 29753091).
Associated Drug Resistance Y

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Transcript NM_002755.3
gDNA chr15:g.66435117G>C
cDNA c.171G>C
Protein p.K57N
Source Database RefSeq
Genome Build GRCh38/hg38
Transcript gDNA cDNA Protein Source Database Genome Build
NM_002755.3 chr15:g.66435117G>C c.171G>C p.K57N RefSeq GRCh38/hg38
NM_002755 chr15:g.66435117G>C c.171G>C p.K57N RefSeq GRCh38/hg38
XM_017022411 chr15:g.66435117G>C c.171G>C p.K57N RefSeq GRCh38/hg38
XM_017022411.2 chr15:g.66435117G>C c.171G>C p.K57N RefSeq GRCh38/hg38

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  • Simple literal full or partial string matches
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  • Use quotes to match a longer phrase which contains spaces "mtor c1483f"

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Molecular Profile Indication/Tumor Type Response Type Therapy Name Approval Status Evidence Type Efficacy Evidence References
MAP2K1 K57N colorectal cancer sensitive Panitumumab + Trametinib Preclinical Actionable In a preclinical study, Vectibix (panitumumab) and Mekinist (trametinib) inhibited colorectal cancer cell lines expressing MAP2K1 K57N in culture (PMID: 26644315). 26644315
MAP2K1 K57N Advanced Solid Tumor resistant PD98059 Preclinical - Cell culture Actionable In a preclinical study, Map2k1 K57N displayed resistance to the Mek inhibitor, PD98059, as demonstrated by constitutive activation of Map2k1 in transformed human kidney cells (PMID: 29753091). 29753091
MAP2K1 K57N colorectal cancer sensitive Cetuximab + Trametinib Preclinical Actionable In a preclinical study, Erbitux (cetuximab) and Mekinist (trametinib) inhibited colorectal cancer cell lines expressing MAP2K1 K57N in culture (PMID: 26644315). 26644315
MAP2K1 K57N lymphatic system cancer sensitive Trametinib Case Reports/Case Series Actionable In a clinical case study, a patient with refractory Erdheim-Chester disease harboring a MAP2K1 K57N mutation had a sustained clinical response to Mekinist (trametinib) for over 6 months (PMID: 26566875). 26566875
MAP2K1 K57N Advanced Solid Tumor sensitive Selumetinib Preclinical - Cell culture Actionable In a preclinical study, Map2k1 K57N displayed sensitivity to the Mek inhibitor, Selumetinib (AZD6244), as demonstrated by reversal of active Map2k1 in transformed human kidney cells (PMID: 29753091). 29753091
MAP2K1 K57N Advanced Solid Tumor resistant AZD8330 Preclinical - Cell culture Actionable In a preclinical study, Map2k1 K57N displayed resistance to the Mek inhibitor, AZD8330, as demonstrated by constitutive activation of Map2k1 in transformed human kidney cells (PMID: 29753091). 29753091
MAP2K1 K57N lung adenocarcinoma sensitive Selumetinib Preclinical - Cell culture Actionable In a preclinical study, Koselugo (selumetinib) inhibited phosphorylation of ERK in cells expressing MAP2K1 K57N and inhibited MAP2K1 K57N-dependent growth in cell culture (PMID: 18632602). 18632602
MAP2K1 K57N Advanced Solid Tumor resistant GDC0879 Preclinical - Cell culture Actionable In a preclinical study, Map2k1 K57N displayed resistance to the Braf inhibitor, GDC-0879, as demonstrated by constitutive activation of Map2k1 in transformed human kidney cells (PMID: 29753091). 29753091
MAP2K1 K57N colorectal cancer resistant Cetuximab Preclinical Actionable In a preclinical study, colorectal cancer cell lines expressing MAP2K1 K57N were insensitive to Erbitux (cetuximab) in culture (PMID: 26644315). 26644315
MAP2K1 K57N colorectal cancer resistant Panitumumab Preclinical Actionable In a preclinical study, colorectal cancer cell lines expressing MAP2K1 K57N were insensitive to Vectibix (panitumumab) in culture (PMID: 26644315). 26644315
MAP2K1 K57N Advanced Solid Tumor resistant Regorafenib Preclinical - Cell culture Actionable In a preclinical study, Map2k1 K57N displayed resistance to Stivarga (regorafenib; BAY 73-4506), as demonstrated by constitutive activation of Map2k1 in transformed human kidney cells (PMID: 29753091). 29753091
MAP2K1 K57N Advanced Solid Tumor sensitive PLX4720 Preclinical - Cell culture Actionable In a preclinical study, Map2k1 K57N displayed sensitivity to the Braf inhibitor, PLX4720, as demonstrated by reversal of active Map2k1 in transformed human kidney cells (PMID: 29753091). 29753091
ALK rearrange MAP2K1 K57N lung non-small cell carcinoma sensitive Ceritinib + Selumetinib Preclinical - Patient cell culture Actionable In a preclinical study, NSCLC patient derived cells harboring an ALK rearrangement demonstrated resistance to Zykadia (ceritinib) due to the acquired mutation MAP2K1 K57N, however, sensitivity was restored to Zykadia (ceritinib) with the addition of Koselugo (selumetinib), resulting in decreased cell survival in culture and reduced tumor volume in xenograft models (PMID: 25394791). 25394791
Molecular Profile Indication/Tumor Type Response Type Therapy Name Approval Status Evidence Type Efficacy Evidence References
MAP2K1 mutant Erdheim-Chester disease sensitive Cobimetinib Guideline Actionable Cotellic (cobimetinib) is included in guidelines as preferred first-line or subsequent-line therapy for patients with Erdheim-Chester disease harboring mutations in the MAPK pathway such as ARAF, NRAS, KRAS, MAP2K1, PIK3CA, or with no detectable mutations, or for whom testing is not available (NCCN Guidelines). detail...
MAP2K1 mutant Erdheim-Chester disease sensitive Trametinib Guideline Actionable Mekinist (trametinib) is included in guidelines as first-line or subsequent-line therapy for patients with Erdheim-Chester disease harboring mutations in the MAPK pathway such as ARAF, NRAS, KRAS, MAP2K1, PIK3CA, or with no detectable mutations, or for whom testing is not available (NCCN Guidelines). detail...