Reference Detail

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.
Journal Clinical cancer research : an official journal of the American Association for Cancer Research
Vol 22
Issue 22
Date 2016 Nov 15
URL
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.

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Gene Name Source Synonyms Protein Domains Gene Description Gene Role
Therapy Name Drugs Efficacy Evidence Clinical Trials
Brigatinib Brigatinib 110 11
Drug Name Trade Name Synonyms Drug Classes Drug Description
Brigatinib Alunbrig AP26113 ALK Inhibitor 20 EGFR Inhibitor (Pan) 43 FLT3 Inhibitor 50 IGF-1R Inhibitor 17 ROS1 Inhibitor 14 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 non-small cell lung cancer who have progressed on or are intolerant to crizotinib (FDA.gov).
Variant Impact Protein Effect Variant Description Associated with drug Resistance
Molecular Profile Indication/Tumor Type Response Type Therapy Name Approval Status Evidence Type Efficacy Evidence References
EGFR E746_A750del EGFR T790M Advanced Solid Tumor sensitive Brigatinib Preclinical - Cell culture Actionable In a preclinical study, Alunbrig (brigatinib) inhibited growth of transformed cells expressing EGFR E746_A750del and T790M 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 S1206Y Advanced Solid Tumor sensitive Brigatinib Preclinical - Cell culture Actionable In a preclinical study, Alunbrig (brigatinib) inhibited growth of transformed cells expressing S1206Y in the context of EML4-ALK in culture (PMID: 27780853). 27780853
EML4-ALK ALK G1202R Advanced Solid Tumor sensitive 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
EML4-ALK ALK F1174V Advanced Solid Tumor decreased response 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
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 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 decreased response 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 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
EGFR wild-type lung carcinoma resistant Brigatinib Preclinical - Cell culture Actionable In a preclinical study, Alunbrig (brigatinib) did not inhibit growth of lung carcinoma cells with activated wild-type EGFR signaling via EGF stimulation in culture (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 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
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
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 FLT3 ITD and D835Y in culture (PMID: 27780853). 27780853
EML4-ALK ALK L1152P Advanced Solid Tumor decreased response 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
EGFR L858R EGFR T790M Advanced Solid Tumor sensitive Brigatinib Preclinical - Cell culture Actionable In a preclinical study, Alunbrig (brigatinib) inhibited growth of transformed cells expressing EGFR L858R and T790M in culture (PMID: 27780853). 27780853
EGFR L858R Advanced Solid Tumor sensitive Brigatinib Preclinical - Cell culture Actionable In a preclinical study, Alunbrig (brigatinib) inhibited growth of transformed cells expressing EGFR L858R in culture (PMID: 27780853). 27780853
NPM1-ALK anaplastic large cell lymphoma sensitive Brigatinib Preclinical - Cell line xenograft Actionable In a preclinical study, Alunbrig (brigatinib) inhibited Alk phosphorylation and growth in anaplastic large cell lymphoma cell lines harboring NPM1-ALK in culture, and induced near complete tumor regression in cell line xenograft models (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 L196M in the context of EML4-ALK in culture and reduced tumor growth in cell line xenograft models (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 FLT3 ITD and F691I demonstrated reduced sensitivity to Alunbrig (brigatinib) compared to cells expressing FLT3 ITD in culture (PMID: 27780853). 27780853
EGFR E746_A750del Advanced Solid Tumor sensitive Brigatinib Preclinical - Cell culture Actionable In a preclinical study, Alunbrig (brigatinib) inhibited growth of transformed cells expressing EGFR E746_A750del in culture (PMID: 27780853). 27780853
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 L1152P Advanced Solid Tumor decreased response 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 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