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Ref Type | Journal Article | ||||||||||||
PMID | (31925410) | ||||||||||||
Authors | Persky NS, Hernandez D, Do Carmo M, Brenan L, Cohen O, Kitajima S, Nayar U, Walker A, Pantel S, Lee Y, Cordova J, Sathappa M, Zhu C, Hayes TK, Ram P, Pancholi P, Mikkelsen TS, Barbie DA, Yang X, Haq R, Piccioni F, Root DE, Johannessen CM | ||||||||||||
Title | Defining the landscape of ATP-competitive inhibitor resistance residues in protein kinases. | ||||||||||||
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Abstract Text | Kinases are involved in disease development and modulation of their activity can be therapeutically beneficial. Drug-resistant mutant kinases are valuable tools in drug discovery efforts, but the prediction of mutants across the kinome is challenging. Here, we generate deep mutational scanning data to identify mutant mammalian kinases that drive resistance to clinically relevant inhibitors. We aggregate these data with subsaturation mutagenesis data and use it to develop, test and validate a framework to prospectively identify residues that mediate kinase activity and drug resistance across the kinome. We validate predicted resistance mutations in CDK4, CDK6, ERK2, EGFR and HER2. Capitalizing on a highly predictable residue, we generate resistance mutations in TBK1, CSNK2A1 and BRAF. Unexpectedly, we uncover a potentially generalizable activation site that mediates drug resistance and confirm its impact in BRAF, EGFR, HER2 and MEK1. We anticipate that the identification of these residues will enable the broad interrogation of the kinome and its inhibitors. |
Molecular Profile | Treatment Approach |
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Gene Name | Source | Synonyms | Protein Domains | Gene Description | Gene Role |
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Therapy Name | Drugs | Efficacy Evidence | Clinical Trials |
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Drug Name | Trade Name | Synonyms | Drug Classes | Drug Description |
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Gene | Variant | Impact | Protein Effect | Variant Description | Associated with drug Resistance |
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BRAF | I463W | missense | unknown | BRAF I463W lies within the protein kinase domain of the Braf protein (UniProt.org). I463W has been demonstrated to confer resistance to some Braf inhibitors in culture (PMID: 31925410), but has not been biochemically characterized and therefore, its effect on Braf protein function is unknown (PubMed, May 2024). | Y |
BRAF | L485S | missense | gain of function - predicted | BRAF L485S lies within the protein kinase domain of the Braf protein (UniProt.org). L485S is predicted to confer a gain of function to Braf as indicated by increased kinase activity in an in vitro assay (PMID: 18413255), and has been demonstrated to confer Braf inhibitor resistance in cell culture (PMID: 31925410). | Y |
MAP2K1 | I99G | missense | gain of function - predicted | MAP2K1 I99G lies within the protein kinase domain of the Map2k1 protein (UniProt.org). I99G results in increased Erk2 phosphorylation and confers resistance to some Mek and Braf inhibitors in culture (PMID: 31925410), and therefore, is predicted to lead to a gain of Map2k1 protein function. | Y |
MAP2K1 | I99M | missense | unknown | MAP2K1 I99M lies within the protein kinase domain of the Map2k1 protein (UniProt.org). I99M has been identified in the scientific literature (PMID: 31925410), but has not been biochemically characterized and therefore, its effect on Map2k1 protein function is unknown (PubMed, Sep 2024). | |
MAP2K1 | I99T | missense | gain of function - predicted | MAP2K1 I99T lies within the protein kinase domain of the Map2k1 protein (UniProt.org). I99T results in increased Erk2 phosphorylation and confers resistance to some Mek and Braf inhibitors in culture (PMID: 31925410), and therefore, is predicted to lead to a gain of Map2k1 protein function. | Y |
Molecular Profile | Indication/Tumor Type | Response Type | Therapy Name | Approval Status | Evidence Type | Efficacy Evidence | References |
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BRAF V600E MAP2K1 I99T | melanoma | resistant | Dabrafenib | Preclinical - Cell culture | Actionable | In a preclinical study, melanoma cells harboring BRAF V600E and expressing MAP2K1 I99T demonstrated resistance to Tafinlar (dabrafenib) treatment in culture (PMID: 31925410). | 31925410 |
BRAF I463W BRAF V600E | melanoma | resistant | Dabrafenib | Preclinical - Cell culture | Actionable | In a preclinical study, melanoma cells harboring BRAF V600E and expressing BRAF I463W or expressing BRAF V600E and I463W in cis demonstrated resistance to Tafinlar (dabrafenib) treatment in culture (PMID: 31925410). | 31925410 |
BRAF V600E MAP2K1 S218D MAP2K1 S222D | melanoma | resistant | Dabrafenib | Preclinical - Cell culture | Actionable | In a preclinical study, expression of MAP2K1 S218D and S222D in melanoma cells harboring BRAF V600E conferred resistance to Tafinlar (dabrafenib) treatment in culture (PMID: 31925410). | 31925410 |
BRAF V600E MAP2K1 I99T | melanoma | resistant | Trametinib | Preclinical - Cell culture | Actionable | In a preclinical study, melanoma cells harboring BRAF V600E and expressing MAP2K1 I99T demonstrated resistance to Mekinist (trametinib) treatment in culture (PMID: 31925410). | 31925410 |
BRAF L485S BRAF V600E | melanoma | resistant | Dabrafenib | Preclinical - Cell culture | Actionable | In a preclinical study, expression of BRAF L485S in melanoma cells harboring BRAF V600E conferred resistance to Tafinlar (dabrafenib) treatment in culture (PMID: 31925410). | 31925410 |
BRAF V600E MAP2K1 I99M | melanoma | sensitive | Trametinib | Preclinical - Cell culture | Actionable | In a preclinical study, melanoma cells harboring BRAF V600E and expressing MAP2K1 I99M demonstrated sensitivity to Mekinist (trametinib) treatment similar to cells expressing wild-type MAP2K1 in culture (PMID: 31925410). | 31925410 |
BRAF V600E MAP2K1 I99G | melanoma | resistant | Dabrafenib | Preclinical - Cell culture | Actionable | In a preclinical study, melanoma cells harboring BRAF V600E and expressing MAP2K1 I99G demonstrated resistance to Tafinlar (dabrafenib) treatment in culture (PMID: 31925410). | 31925410 |
BRAF V600E MAP2K1 I99M | melanoma | sensitive | Dabrafenib | Preclinical - Cell culture | Actionable | In a preclinical study, melanoma cells harboring BRAF V600E and expressing MAP2K1 I99M demonstrated sensitivity to Tafinlar (dabrafenib) treatment similar to cells expressing wild-type MAP2K1 in culture (PMID: 31925410). | 31925410 |
EML4 - ALK ALK L1152R | lung cancer | resistant | Ceritinib | Preclinical - Cell culture | Actionable | In a preclinical study, lung cancer cells expressing ALK L1152R in the context of EML4-ALK demonstrated resistance to Zykadia (ceritinib) treatment in culture (PMID: 31925410). | 31925410 |
BRAF V600E MAP2K1 I99G | melanoma | resistant | Trametinib | Preclinical - Cell culture | Actionable | In a preclinical study, melanoma cells harboring BRAF V600E and expressing MAP2K1 I99G demonstrated resistance to Mekinist (trametinib) treatment in culture (PMID: 31925410). | 31925410 |