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|Ref Type||Journal Article|
|Authors||Lin YT, Yu CJ, Yang JC, Shih JY|
|Title||Anaplastic Lymphoma Kinase (ALK) Kinase Domain Mutation Following ALK Inhibitor(s) Failure in Advanced ALK Positive Non-Small-Cell Lung Cancer: Analysis and Literature Review.|
|Journal||Clinical lung cancer|
|Abstract Text||Secondary anaplastic lymphoma kinase (ALK) mutation may occur in patients with advanced ALK-positive non-small cell lung cancer treated with ALK inhibitors, but its nature is not well-known.We analyzed tumor specimens after the failure of treatment with ALK inhibitor(s) (crizotinib, alectinib, and ceritinib) for secondary ALK kinase domain mutation, EGFR, K-ras, and PIK3CA mutations. The literature regarding acquired ALK-inhibitor(s) resistance was also reviewed.Among 59 patients who received ALK inhibitor(s) during the period of December 2010 to April 2015, 7 had re-biopsied tumor specimens for analyses following ALK inhibitor(s) failure. One had G1202R after crizotinib and alectinib failure, and 6 were wild type. No EGFR, K-ras, or PIK3CA mutations were found. In our review of the literature and taken together with our patients, 25 of the 88 (28%) patients with crizotinib failure had secondary ALK mutation; L1196M mutation was most common (n = 11). Patients with secondary ALK mutation other than L1196M had a longer progression-free survival after crizotinib than patients with L1196M (median, 12.0 vs. 7.0 months; P = .04). Of the 9 patients with alectinib failure, 5 had I1171 mutation and 2 had G1202R. Of the 11 patients with ceritinib failure, 2 had G1202R, 1 had F1174C, and 1 had both G1202R and F1174V. I1171 mutation, G1202R, and F1174 mutations were also found in crizotinib-failed patients.Some acquired ALK mutations may cause co-resistance to other ALK inhibitors. Re-biopsy for ALK mutation analysis might be suggested prior to choosing a second-line ALK inhibitor treatment.|
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|ALK G1202R ALK rearrange||lung non-small cell carcinoma||predicted - resistant||Alectinib||Case Reports/Case Series||Actionable||In a clinical case study, ALK G1202R was identified in a patient with ALK-rearranged non-small cell lung carcinoma after the disease progressed while on Xalkori (crizotinib) followed by Alecensa (alectinib) therapy (PMID: 27130468).||27130468|