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Ref Type | Journal Article | ||||||||||||
PMID | (27780853) | ||||||||||||
Authors | Zhang S, Anjum R, Squillace R, Nadworny S, Zhou T, Keats J, Ning Y, Wardwell SD, Miller D, Song Y, Eichinger L, Moran L, Huang WS, Liu S, Zou D, Wang Y, Mohemmad Q, Jang HG, Ye E, Narasimhan N, Wang F, Miret J, Zhu X, Clackson T, Dalgarno D, Shakespeare WC, Rivera VM | ||||||||||||
Title | The Potent ALK Inhibitor Brigatinib (AP26113) Overcomes Mechanisms of Resistance to First- and Second-Generation ALK Inhibitors in Preclinical Models. | ||||||||||||
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Abstract Text | Non-small cell lung cancers (NSCLCs) harboring ALK gene rearrangements (ALK+) typically become resistant to the first-generation anaplastic lymphoma kinase (ALK) tyrosine kinase inhibitor (TKI) crizotinib through development of secondary resistance mutations in ALK or disease progression in the brain. Mutations that confer resistance to second-generation ALK TKIs ceritinib and alectinib have also been identified. Here, we report the structure and first comprehensive preclinical evaluation of the next-generation ALK TKI brigatinib.A kinase screen was performed to evaluate the selectivity profile of brigatinib. The cellular and in vivo activities of ALK TKIs were compared using engineered and cancer-derived cell lines. The brigatinib-ALK co-structure was determined.Brigatinib potently inhibits ALK and ROS1, with a high degree of selectivity over more than 250 kinases. Across a panel of ALK+ cell lines, brigatinib inhibited native ALK (IC50, 10 nmol/L) with 12-fold greater potency than crizotinib. Superior efficacy of brigatinib was also observed in mice with ALK+ tumors implanted subcutaneously or intracranially. Brigatinib maintained substantial activity against all 17 secondary ALK mutants tested in cellular assays and exhibited a superior inhibitory profile compared with crizotinib, ceritinib, and alectinib at clinically achievable concentrations. Brigatinib was the only TKI to maintain substantial activity against the most recalcitrant ALK resistance mutation, G1202R. The unique, potent, and pan-ALK mutant activity of brigatinib could be rationalized by structural analyses.Brigatinib is a highly potent and selective ALK inhibitor. These findings provide the molecular basis for the promising activity being observed in ALK+, crizotinib-resistant patients with NSCLC being treated with brigatinib in clinical trials. Clin Cancer Res; 22(22); 5527-38. ©2016 AACR. |
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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Brigatinib | Brigatinib | 181 | 20 |
Drug Name | Trade Name | Synonyms | Drug Classes | Drug Description |
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Brigatinib | Alunbrig | AP26113 | ALK Inhibitor 33 EGFR Inhibitor (Pan) 64 FLT3 Inhibitor 69 IGF-1R Inhibitor 17 ROS1 Inhibitor 21 | Alunbrig (brigatinib) is a multi-kinase inhibitor with selected activity against ALK, ROS1 fusions, FLT3, IGF1R and mutant EGFR, potentially resulting in decreased tumor growth (PMID: 27780853). Alunbrig (brigatinib) is FDA approved for use in patients with ALK-positive metastatic non-small cell lung cancer (FDA.gov). |
Gene | Variant | Impact | Protein Effect | Variant Description | Associated with drug Resistance |
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Molecular Profile | Indication/Tumor Type | Response Type | Therapy Name | Approval Status | Evidence Type | Efficacy Evidence | References |
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EML4 - ALK | lung non-small cell carcinoma | sensitive | Brigatinib | Preclinical - Cell line xenograft | Actionable | In a preclinical study, Alunbrig (brigatinib) inhibited Alk phosphorylation and growth in non-small cell lung cancer cell lines harboring EML4-ALK in culture, and induced near complete tumor regression in cell line xenograft models (PMID: 27780853). | 27780853 |
EML4 - ALK ALK G1202R | Advanced Solid Tumor | conflicting | Brigatinib | Preclinical - Cell line xenograft | Actionable | In a preclinical study, Alunbrig (brigatinib) inhibited growth of transformed cells expressing ALK G1202R in the context of EML4-ALK in culture and reduced tumor growth in cell line xenograft models (PMID: 27780853). | 27780853 |
EML4 - ALK ALK F1174L | Advanced Solid Tumor | conflicting | Crizotinib | Preclinical - Cell culture | Actionable | In a preclinical study, transformed cells expressing ALK F1174L in the context of EML4-ALK demonstrated reduced sensitivity to Xalkori (crizotinib) in culture (PMID: 27780853). | 27780853 |
FLT3 exon 14 ins | Advanced Solid Tumor | sensitive | Brigatinib | Preclinical - Cell culture | Actionable | In a preclinical study, Alunbrig (brigatinib) inhibited growth of transformed cells expressing FLT3 ITD in culture (PMID: 27780853). | 27780853 |
EML4 - ALK ALK T1151dup | Advanced Solid Tumor | sensitive | Brigatinib | Preclinical - Cell culture | Actionable | In a preclinical study, Alunbrig (brigatinib) inhibited growth of transformed cells expressing ALK T1151dup in the context of EML4-ALK in culture (PMID: 27780853). | 27780853 |
EML4 - ALK ALK F1174V | Advanced Solid Tumor | sensitive | Brigatinib | Preclinical - Cell culture | Actionable | In a preclinical study, Alunbrig (brigatinib) inhibited growth of transformed cells expressing ALK F1174V in the context of EML4-ALK in culture (PMID: 27780853). | 27780853 |
EML4 - ALK ALK S1206F | Advanced Solid Tumor | sensitive | Brigatinib | Preclinical - Cell culture | Actionable | In a preclinical study, Alunbrig (brigatinib) inhibited growth of transformed cells expressing ALK S1206F in the context of EML4-ALK in culture (PMID: 27780853). | 27780853 |
EML4 - ALK ALK S1206Y | Advanced Solid Tumor | conflicting | Brigatinib | Preclinical - Cell culture | Actionable | In a preclinical study, Alunbrig (brigatinib) inhibited growth of transformed cells expressing ALK S1206Y in the context of EML4-ALK in culture (PMID: 27780853). | 27780853 |
EML4 - ALK ALK L1196M | Advanced Solid Tumor | sensitive | Brigatinib | Preclinical - Cell line xenograft | Actionable | In a preclinical study, Alunbrig (brigatinib) inhibited growth of transformed cells expressing ALK L1196M in the context of EML4-ALK in culture and reduced tumor growth in cell line xenograft models (PMID: 27780853). | 27780853 |
FLT3 exon 14 ins FLT3 F691L | Advanced Solid Tumor | sensitive | Brigatinib | Preclinical - Cell culture | Actionable | In a preclinical study, Alunbrig (brigatinib) inhibited growth of transformed cells expressing FLT3 ITD and F691L in culture (PMID: 27780853). | 27780853 |
EML4 - ALK ALK L1152P | Advanced Solid Tumor | resistant | Crizotinib | Preclinical - Cell culture | Actionable | In a preclinical study, transformed cells expressing ALK L1152P in the context of EML4-ALK demonstrated reduced sensitivity to Xalkori (crizotinib) compared to cells expressing EML4-ALK in culture (PMID: 27780853). | 27780853 |
EML4 - ALK ALK L1152R | Advanced Solid Tumor | sensitive | Brigatinib | Preclinical - Cell culture | Actionable | In a preclinical study, Alunbrig (brigatinib) inhibited growth of transformed cells expressing ALK L1152R in the context of EML4-ALK in culture (PMID: 27780853). | 27780853 |
EML4 - ALK ALK L1152R | Advanced Solid Tumor | resistant | Ceritinib | Preclinical - Cell culture | Actionable | In a preclinical study, transformed cells expressing ALK L1152R in the context of EML4-ALK demonstrated reduced sensitivity to Zykadia (ceritinib) compared to cells expressing EML4-ALK in culture (PMID: 27780853). | 27780853 |
EML4 - ALK ALK L1152P | Advanced Solid Tumor | resistant | Ceritinib | Preclinical - Cell culture | Actionable | In a preclinical study, transformed cells expressing ALK L1152P in the context of EML4-ALK demonstrated reduced sensitivity to Zykadia (ceritinib) compared to cells expressing EML4-ALK in culture (PMID: 27780853). | 27780853 |
FLT3 exon 14 ins FLT3 D835Y | Advanced Solid Tumor | sensitive | Brigatinib | Preclinical - Cell culture | Actionable | In a preclinical study, Alunbrig (brigatinib) inhibited growth of transformed cells expressing a FLT3-ITD mutation and FLT3 D835Y in culture (PMID: 27780853). | 27780853 |
ROS1 fusion | Advanced Solid Tumor | sensitive | Brigatinib | Preclinical - Cell culture | Actionable | In a preclinical study, Alunbrig (brigatinib) inhibited growth of transformed cells expressing ROS1 fusion proteins in culture (PMID: 27780853). | 27780853 |
EML4 - ALK ALK F1174V | Advanced Solid Tumor | predicted - resistant | Crizotinib | Preclinical - Cell culture | Actionable | In a preclinical study, transformed cells expressing ALK F1174V in the context of EML4-ALK demonstrated reduced sensitivity to Xalkori (crizotinib) compared to cells expressing EML4-ALK in culture (PMID: 27780853). | 27780853 |
EML4 - ALK ALK T1151dup | Advanced Solid Tumor | resistant | Crizotinib | Preclinical - Cell culture | Actionable | In a preclinical study, transformed cells expressing ALK T1151dup in the context of EML4-ALK demonstrated reduced sensitivity to Xalkori (crizotinib) compared to cells expressing EML4-ALK in culture (PMID: 27780853). | 27780853 |
EML4 - ALK ALK L1152P | Advanced Solid Tumor | sensitive | Brigatinib | Preclinical - Cell culture | Actionable | In a preclinical study, Alunbrig (brigatinib) inhibited growth of transformed cells expressing ALK L1152P in the context of EML4-ALK in culture (PMID: 27780853). | 27780853 |
FLT3 exon 14 ins FLT3 F691I | Advanced Solid Tumor | decreased response | Brigatinib | Preclinical - Cell culture | Actionable | In a preclinical study, transformed cells expressing a FLT3-ITD mutation and FLT3 F691I demonstrated reduced sensitivity to Alunbrig (brigatinib) compared to cells expressing FLT3-ITD alone in culture (PMID: 27780853). | 27780853 |