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Molecular Profile EML4 - ALK ALK I1171N
Therapy Alectinib
Indication/Tumor Type lung non-small cell carcinoma
Response Type predicted - resistant

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Molecular Profile Indication/Tumor Type Response Type Therapy Name Approval Status Evidence Type Efficacy Evidence References
EML4 - ALK ALK I1171N lung non-small cell carcinoma predicted - resistant Alectinib Case Reports/Case Series Actionable In a clinical case study, a patient with non-small cell lung carcinoma harboring EML4-ALK demonstrated tumor regression when treated with Alecensa (alectinib), but progressed seven months later, and was found to harbor a secondary resistance mutation, ALK I1171N (PMID: 25393798). 25393798
EML4 - ALK ALK I1171N lung non-small cell carcinoma predicted - resistant Alectinib Preclinical - Pdx & cell culture Actionable In a preclinical study, Alecensa (alectinib) failed to inhibit growth of patient-derived non-small cell lung cancer cells harboring EML4-ALK with ALK I1171N in culture, and did not induce tumor regression or reduce Alk phosphorylation in xenograft models (PMID: 33627640). 33627640
PubMed Id Reference Title Details
(25393798) Secondary mutations at I1171 in the ALK gene confer resistance to both Crizotinib and Alectinib. Full reference...
(33627640) Gilteritinib overcomes lorlatinib resistance in ALK-rearranged cancer. Full reference...