PMID- 33569315 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220420 IS - 2218-6751 (Print) IS - 2226-4477 (Electronic) IS - 2218-6751 (Linking) VI - 10 IP - 1 DP - 2021 Jan TI - Phase 1/2 study of alectinib in RET-rearranged previously-treated non-small cell lung cancer (ALL-RET). PG - 314-325 LID - 10.21037/tlcr-20-549 [doi] AB - BACKGROUND: Rearranged during transfection (RET) rearrangements occur in 1-2% of non-small cell lung cancers (NSCLCs). Alectinib administered at doses of 300 mg and 600 mg twice daily (BID) is approved for. ALK: rearranged NSCLC in Japan and other countries, respectively. Since alectinib has activity against RET, we conducted a phase (P) 1/2 study of alectinib to determine its activity in Japanese patients with. RET: rearranged NSCLC. METHODS: This study was a single-arm, open-label, multi-institutional P1/2 trial. Previously treated patients with RET-rearranged NSCLC, screened by nation-wide network (LC-SCRUM-Japan), were recruited. In P1, alectinib (600 or 450 mg BID) was administered following a 3+3 design and its safety was assessed. During P2, alectinib was administered at the recommended dose (RD) determined in P1. The primary endpoint was the objective response rate (ORR) in RET inhibitor-naive patients treated with the RD of alectinib. RESULTS: Thirty-four patients were administered alectinib. In cohort 1 (600 mg BID) of P1, we observed 5 dose-limiting toxicities (DLTs), including grade 3 rash and thromboembolic event, in 3 of 6 patients. In cohort 2 (450 mg BID), we observed no DLTs in 3 patients. Pharmacokinetic analysis revealed that AUC(0-10) to 600 mg BID was higher than that previously reported in global trials. We determined 450 mg BID as the RD for P2. In 25 RET inhibitor-naive patients, one achieved an objective response (4%) and 13 achieved disease control at 8 weeks (52%). The median progression-free survival (PFS) was 3.4 months (95% CI, 2.0-5.4), while the median overall survival was 19.0 months (5.4-NE). We observed grade 3 adverse events (AEs) (4%) including pneumonitis in P2. CONCLUSIONS: Alectinib exerts limited activity against RET-rearranged NSCLC. Further investigation to elucidate the mechanisms underlying sensitivity and resistance of RET inhibitors is required to improve outcomes for these patients. CI - 2021 Translational Lung Cancer Research. All rights reserved. FAU - Takeuchi, Shinji AU - Takeuchi S AD - Division of Medical Oncology, Cancer Research Institute, Kanazawa University, Kanazawa, Ishikawa, Japan. AD - Cancer Center, Kanazawa University Hospital, Kanazawa, Ishikawa, Japan. FAU - Yanagitani, Noriko AU - Yanagitani N AD - Department of Thoracic Medical Oncology, The Cancer Institute Hospital of Japanese Foundation for Cancer Research, Koto-ku, Tokyo, Japan. FAU - Seto, Takashi AU - Seto T AD - Department of Thoracic Oncology, National Kyusyu Cancer Center, Minami-Ku, Fukuoka, Japan. FAU - Hattori, Yoshihiro AU - Hattori Y AD - Department of Thoracic Oncology, Hyogo Cancer Center, Akashi, Hyogo, Japan. FAU - Ohashi, Kadoaki AU - Ohashi K AD - Department of Respiratory Medicine and Allergy, Kita-ku, Okayama University Hospital, Okayama, Japan. FAU - Morise, Masahiro AU - Morise M AD - Department of Respiratory Medicine, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan. FAU - Matsumoto, Shingo AU - Matsumoto S AD - Department of Thoracic Oncology, National Cancer Center Hospital East, Kashiwa, Chiba, Japan. FAU - Yoh, Kiyotaka AU - Yoh K AD - Department of Thoracic Oncology, National Cancer Center Hospital East, Kashiwa, Chiba, Japan. FAU - Goto, Koichi AU - Goto K AD - Department of Thoracic Oncology, National Cancer Center Hospital East, Kashiwa, Chiba, Japan. FAU - Nishio, Makoto AU - Nishio M AD - Department of Thoracic Medical Oncology, The Cancer Institute Hospital of Japanese Foundation for Cancer Research, Koto-ku, Tokyo, Japan. FAU - Takahara, Shizuko AU - Takahara S AD - Innovative Clinical Research Center (iCREK), Kanazawa University Hospital, Kanazawa, Ishikawa, Japan. FAU - Kawakami, Takahiro AU - Kawakami T AD - Innovative Clinical Research Center (iCREK), Kanazawa University Hospital, Kanazawa, Ishikawa, Japan. FAU - Imai, Yasuhito AU - Imai Y AD - Innovative Clinical Research Center (iCREK), Kanazawa University Hospital, Kanazawa, Ishikawa, Japan. FAU - Yoshimura, Kenichi AU - Yoshimura K AD - Innovative Clinical Research Center (iCREK), Kanazawa University Hospital, Kanazawa, Ishikawa, Japan. AD - Medical Center for Translational and Clinical Research, Hiroshima University Hospital, Hiroshima University, Minami, Hiroshima, Japan. FAU - Tanimoto, Azusa AU - Tanimoto A AD - Division of Medical Oncology, Cancer Research Institute, Kanazawa University, Kanazawa, Ishikawa, Japan. AD - Cancer Center, Kanazawa University Hospital, Kanazawa, Ishikawa, Japan. FAU - Nishiyama, Akihiro AU - Nishiyama A AD - Division of Medical Oncology, Cancer Research Institute, Kanazawa University, Kanazawa, Ishikawa, Japan. AD - Cancer Center, Kanazawa University Hospital, Kanazawa, Ishikawa, Japan. FAU - Murayama, Toshinori AU - Murayama T AD - Innovative Clinical Research Center (iCREK), Kanazawa University Hospital, Kanazawa, Ishikawa, Japan. FAU - Yano, Seiji AU - Yano S AD - Division of Medical Oncology, Cancer Research Institute, Kanazawa University, Kanazawa, Ishikawa, Japan. AD - Cancer Center, Kanazawa University Hospital, Kanazawa, Ishikawa, Japan. LA - eng PT - Journal Article PL - China TA - Transl Lung Cancer Res JT - Translational lung cancer research JID - 101646875 PMC - PMC7867784 OTO - NOTNLM OT - RET rearrangement OT - Rearranged during transfection (RET) OT - alectinib OT - clinical trial OT - lung cancer OT - precision medicine COIS- Conflicts of Interest: All authors have completed the ICMJE uniform disclosure form (available at http://dx.doi.org/10.21037/tlcr-20-549). Dr. NY, Dr. YH, and Dr. MM reports personal fees from Chugai Pharma, outside the submitted work. Dr. TS reports grants and personal fees from Chugai Pharma, grants and personal fees from AstraZeneca, grants and personal fees from Eisai, grants and personal fees from Eli Lilly Japan, grants and personal fees from Nippon Boehringer Ingelheim, grants and personal fees from Novartis Pharma, grants and personal fees from Pfizer Japan, grants and personal fees from Sanofi, grants and personal fees from Taiho Pharma, personal fees from Daiichi Sankyo, personal fees from Fuji Pharma, personal fees from Hisamitsu Pharma, personal fees from Kyowa Hakko Kirin, personal fees from Mochida Pharma, personal fees from Nippon Kayaku, personal fees from Ono Pharma, personal fees from Roche Diagnostics, personal fees from Showa Yakuhin Kako, personal fees from Sumitomo Dainippon Pharma, personal fees from Takeda Pharma, grants from Astellas Pharma, grants from Bayer Yakuhin, grants from Merck Serono, grants from MSD, grants from Verastem, grants from Yakult, outside the submitted work. Dr. SM reports grants and personal fees from Astellas Pharma, grants and personal fees from Novartis Pharma, grants and personal fees from Eli Lilly Japan, grants from Chugai Pharma, grants from AstraZeneca, grants from Amgen Astellas BioPharma, grants from Eisai, grants from Ono Pharma, grants from Kyowa Hakko Kirin, grants from MSD, grants from Daiichi Sankyo, grants from Taiho Pharma, grants from Takeda Pharma, grants from Pfizer, outside the submitted work. Dr. K Yoh reports grants and personal fees from AstraZeneca, grants and personal fees from Eli Lilly Japan, personal fees from Boehringer Ingelheim, personal fees from Pfizer, personal fees from Taiho Pharma, personal fees from Bristol-Myers Squibb, personal fees from Ono Pharma, grants from Bayer, grants from Novartis, grants from Takeda Pharma, outside the submitted work. Dr. KG reports grants and personal fees from Chugai, grants and personal fees from Taiho Pharma, grants and personal fees from AstraZeneca, grants and personal fees from Nippon Boehringer Ingelheim, grants and personal fees from Ono Pharma, grants and personal fees from Pfizer, grants and personal fees from Kyowa Hakko Kirin, grants and personal fees from Eli Lilly Japan, grants and personal fees from Daiichi Sankyo, grants from MSD, grants from Quintiles, grants from GlaxoSmithKline, grants from OxOnc, grants from Sumitomo Dainippon Pharma, grants from Takeda Pharma, grants from Astellas Pharma, grants from Eisai, grants from Amgen Astellas BioPharma, personal fees from Yakult Honsha, personal fees from Novartis Pharma, personal fees from Bristol-Myers Squibb, outside the submitted work. Dr. MN reports grants and personal fees from Chugai, grants and personal fees from Taiho Pharma, grants and personal fees from AstraZeneca, grants and personal fees from Bristol Myers Squibb, grants and personal fees from Ono Pharma, grants and personal fees from Pfizer, grants and personal fees from Novartis, grants and personal fees from Eli Lilly Japan, grants and personal fees from MSD, personal fees from Boehringer-Ingelheim, personal fees from Daiichi Sankyo Healthcare, personal fees from Merck Serono, personal fees from MSD, personal fees from Pfizer, grants from Astellas, outside the submitted work. Dr. K Yoshimura reports personal fees from Chugai Pharma, personal fees from Astra Zeneca, personal fees from Eli Lilly, outside the submitted work. Dr. SY reports grants from the Japan Agency for Medical Research and Development (AMED), during the conduct of the study; grants and personal fees from Chugai Pharma, grants and personal fees from Boehringer-Ingelheim Japan, grants and personal fees from Novartis, personal fees from AstraZeneca, personal fees from Pfizer, outside the submitted work. The other authors have no conflicts of interest to declare. EDAT- 2021/02/12 06:00 MHDA- 2021/02/12 06:01 PMCR- 2021/01/01 CRDT- 2021/02/11 05:54 PHST- 2021/02/11 05:54 [entrez] PHST- 2021/02/12 06:00 [pubmed] PHST- 2021/02/12 06:01 [medline] PHST- 2021/01/01 00:00 [pmc-release] AID - tlcr-10-01-314 [pii] AID - 10.21037/tlcr-20-549 [doi] PST - ppublish SO - Transl Lung Cancer Res. 2021 Jan;10(1):314-325. doi: 10.21037/tlcr-20-549.