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Ref Type Journal Article
PMID (25393796)
Authors Ou SH, Klempner SJ, Greenbowe JR, Azada M, Schrock AB, Ali SM, Ross JS, Stephens PJ, Miller VA
Title Identification of a novel HIP1-ALK fusion variant in Non-Small-Cell Lung Cancer (NSCLC) and discovery of ALK I1171 (I1171N/S) mutations in two ALK-rearranged NSCLC patients with resistance to Alectinib.
Journal Vol Issue Date Pages Journal Short Title
Journal of thoracic oncology : official publication of the International 9 12 2014 Dec 1821-5 J Thorac Oncol
URL
Abstract Text Huntingtin-interacting protein 1 (HIP1) has recently been identified as a new fusion partner fused to anaplastic lymphoma kinase (ALK) in non-small-cell lung cancer (NSCLC). To date, two variants of HIP1-ALK (H21; A20) and (H28; A20) have been identified in NSCLC. However, the response of patients with NSCLC harboring HIP1-ALK to ALK inhibitors and potential resistance mechanisms to such remain unknown. Here, we report a patient with NSCLC harboring a novel HIP1-ALK fusion variant (H30; A20). This patient and another patient with EML4-ALK variant 3a/b initially responded sequentially to crizotinib and then alectinib, a next-generation ALK inhibitor, but developed acquired resistance to alectinib with the presence of a mutation in amino acid residue 1171 (I1171N and I1171S respectively) located in the hydrophobic regulatory spine (R-spine) of the ALK kinase in both the cases as identified by a comprehensive next-generation sequencing-based assay performed on biopsies of new liver metastases that developed during alectinib treatment.

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