PMID- 27418132 OWN - NLM STAT- MEDLINE DCOM- 20180206 LR - 20220410 IS - 1949-2553 (Electronic) IS - 1949-2553 (Linking) VI - 7 IP - 39 DP - 2016 Sep 27 TI - Responses to crizotinib in patients with ALK-positive lung adenocarcinoma who tested immunohistochemistry (IHC)-positive and fluorescence in situ hybridization (FISH)-negative. PG - 64410-64420 LID - 10.18632/oncotarget.10560 [doi] AB - Although the Ventana immunohistochemistry (IHC) platform for detecting anaplastic lymphoma kinase gene (ALK) (D5F3) expression was recently approved by the US Food and Drugs Administration (FDA), fluorescence in situ hybridization (FISH) is still the "gold-standard" method recommended by the US National Comprehensive Cancer Network (NCCN) guideline for NSCLC. We evaluated 6 ALK-positive lung adenocarcinoma patients who tested Ventana IHC-positive and FISH-negative and assessed their clinical responses to the ALK tyrosine kinase inhibitor (TKI) crizotinib. Histologic and cytologic specimens from the 6 patients were stained with Ventana anti-ALK(D5F3) rabbit monoclonal primary antibody using the OptiView DAB IHC detection kit and OptiView amplification kit on a Ventana BenchMark XT processor. In addition, they were also tested by FISH, qRT-PCR, next-generation sequencing (NGS), and RNAscope ISH analysis. All patients received crizotinib treatment and their follow-up clinical data were recorded. The objective response rate achieved with crizotinib therapy was 66.7% (4/6 partial responses and 2/6 stable disease). One patient in whom a new fusion type (EML4->EXOC6B->ALK fusion) was identified obtained a partial response. These findings indicate that patients with ALK-positive lung adenocarcinoma who test Ventana IHC-positive and FISH-negative may still respond to crizotinib therapy. FAU - Ma, Di AU - Ma D AD - Department of Medical Oncology, Cancer Institute & Hospital, Chinese Academy of Medical Sciences, Beijing, China. FAU - Wang, Zheng AU - Wang Z AD - Department of Pathology, Beijing Hospital of the Ministry of Health, Beijing, China. FAU - Yang, Lin AU - Yang L AD - Department of Pathology, Cancer Institute & Hospital, Chinese Academy of Medical Sciences, Beijing, China. FAU - Mu, Xinlin AU - Mu X AD - Department of Respiratory and Critical Care Medicine, Peking University People's Hospital, Beijing, China. FAU - Wang, Yan AU - Wang Y AD - Department of Medical Oncology, Cancer Institute & Hospital, Chinese Academy of Medical Sciences, Beijing, China. FAU - Zhao, Xinming AU - Zhao X AD - Department of Diagnostic Radiology, Cancer Institute & Hospital, Chinese Academy of Medical Sciences, Beijing, China. FAU - Li, Junling AU - Li J AD - Department of Medical Oncology, Cancer Institute & Hospital, Chinese Academy of Medical Sciences, Beijing, China. FAU - Lin, Dongmei AU - Lin D AD - Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Pathology, Peking University Cancer Hospital & Institute, Beijing, China. LA - eng PT - Journal Article PT - Multicenter Study PL - United States TA - Oncotarget JT - Oncotarget JID - 101532965 RN - 0 (Antineoplastic Agents) RN - 0 (Biomarkers, Tumor) RN - 0 (EML4-ALK fusion protein, human) RN - 0 (Oncogene Proteins, Fusion) RN - 0 (Protein Kinase Inhibitors) RN - 0 (Pyrazoles) RN - 0 (Pyridines) RN - 53AH36668S (Crizotinib) RN - EC 2.7.10.1 (ALK protein, human) RN - EC 2.7.10.1 (Anaplastic Lymphoma Kinase) RN - EC 2.7.10.1 (Receptor Protein-Tyrosine Kinases) SB - IM MH - Adenocarcinoma/*drug therapy/enzymology/genetics/pathology MH - Adenocarcinoma of Lung MH - Adult MH - Aged MH - Anaplastic Lymphoma Kinase MH - Antineoplastic Agents/adverse effects/*therapeutic use MH - Biomarkers, Tumor/*antagonists & inhibitors/genetics MH - China MH - Crizotinib MH - Female MH - Humans MH - *Immunohistochemistry MH - *In Situ Hybridization, Fluorescence MH - Lung Neoplasms/*drug therapy/enzymology/genetics/pathology MH - Male MH - Middle Aged MH - Oncogene Proteins, Fusion/genetics MH - Patient Selection MH - Precision Medicine MH - Predictive Value of Tests MH - Protein Kinase Inhibitors/adverse effects/*therapeutic use MH - Pyrazoles/adverse effects/*therapeutic use MH - Pyridines/adverse effects/*therapeutic use MH - Receptor Protein-Tyrosine Kinases/*antagonists & inhibitors/genetics MH - Time Factors MH - Tomography, X-Ray Computed MH - Treatment Outcome PMC - PMC5325453 OTO - NOTNLM OT - ALK status OT - crizotinib OT - fluorescence in situ hybridization OT - immunohistochemistry OT - non-small-cell lung cancer COIS- CONFLICTS OF INTEREST The authors have no conflicts of interest to declare. EDAT- 2016/07/16 06:00 MHDA- 2018/02/07 06:00 PMCR- 2016/09/27 CRDT- 2016/07/16 06:00 PHST- 2015/09/21 00:00 [received] PHST- 2016/06/29 00:00 [accepted] PHST- 2016/07/16 06:00 [pubmed] PHST- 2018/02/07 06:00 [medline] PHST- 2016/07/16 06:00 [entrez] PHST- 2016/09/27 00:00 [pmc-release] AID - 10560 [pii] AID - 10.18632/oncotarget.10560 [doi] PST - ppublish SO - Oncotarget. 2016 Sep 27;7(39):64410-64420. doi: 10.18632/oncotarget.10560.