PMID- 26475356 OWN - NLM STAT- MEDLINE DCOM- 20170111 LR - 20201209 IS - 1437-7772 (Electronic) IS - 1341-9625 (Linking) VI - 21 IP - 3 DP - 2016 Jun TI - Multicenter randomized phase II clinical trial of oxaliplatin reintroduction as a third- or later-line therapy for metastatic colorectal cancer-biweekly versus standard triweekly XELOX (The ORION Study). PG - 566-72 LID - 10.1007/s10147-015-0911-7 [doi] AB - BACKGROUND: The aim of this multicenter, open-label, randomized phase II trial was to evaluate the efficacy of a dose-dense capecitabine and oxaliplatin (XELOX) regimen in patients with metastatic colorectal cancer (mCRC) for whom reintroduction of oxaliplatin had been planned as a third- or later-line regimen. METHODS: The patients with mCRC who had received prior chemotherapy including oxaliplatin and were scheduled for reintroduction of oxaliplatin were randomized to capecitabine (1,000 mg/m(2)) twice daily on days 1-14 and oxaliplatin (130 mg/m(2)) on day 1 every 21 days (Q3W group) or capecitabine (2,000 mg/m(2)) twice daily on days 1-7 and oxaliplatin (85 mg/m(2)) on day 1 every 14 days (Q2W group). The primary endpoint was the time-to-treatment failure (TTF). Other endpoints included overall survival (OS), progression-free survival (PFS) and other adverse events (AEs). RESULTS: A total of 46 patients were enrolled in the trial-22 patients were randomly assigned to the Q3W group and 23 to the Q2W group. The median TTF was 3.4 months in both groups (hazard ratio [HR] 1.053; p = 0.880). The median PFS and OS were 3.3 and 9.2 months in the Q2W group and 4.3 and 12.1 months in the Q3W group, respectively (HR 1.15; p = 0.153 and 0.672; p = 0.836). The most common grade 3-4 AEs in the Q3W and Q2W groups were fatigue (27.3 vs 21.7), neuropathy (9.1 vs 0 %) and diarrhea (9.1 vs 0 %), respectively. CONCLUSION: There was no significant inter-group difference in any of the efficacy and safety endpoints, including TTF, OS, RFS and AEs. The results of this clinical trial were convincingly negative. FAU - Matsuda, Chu AU - Matsuda C AD - Department of Surgery, Osaka General Medical Center, Osaka, Japan. FAU - Honda, Michitaka AU - Honda M AD - Department of Gastroenterological Surgery, Gastroenterological Center, Cancer Institute Hospital, Japanese Foundation for Cancer Research, 3-10-6 Ariake, Koto-ku, Tokyo, 135-8550, Japan. michitaka.honda@jfcr.or.jp. FAU - Tanaka, Chihiro AU - Tanaka C AD - Department of Surgery, Gifu Prefectural General Medical Center, Gifu, Japan. FAU - Fukunaga, Mutsumi AU - Fukunaga M AD - Department of Surgery, Hyogo Prefectural Nishinomiya Hospital, Nishinomiya, Japan. FAU - Ishibashi, Keiichiro AU - Ishibashi K AD - Department of Surgery, Saitama Medical University, Saitama, Japan. FAU - Munemoto, Yoshinori AU - Munemoto Y AD - Department of Surgery, Fukui Saiseikai Hospital, Fukui, Japan. FAU - Hata, Taishi AU - Hata T AD - Department of Gastroenterological Surgery, Osaka University, Osaka, Japan. FAU - Bando, Hiroyuki AU - Bando H AD - Department of Surgery, Ishikawa Prefectural Central Hospital, Kanazawa, Ishikawa, Japan. FAU - Oshiro, Mitsuru AU - Oshiro M AD - Department of Surgery, Toho University, Sakura Hospital, Sakura, Japan. FAU - Kobayashi, Michiya AU - Kobayashi M AD - Department of Surgery, Kochi Medical School, Kochi University, Kochi, Japan. FAU - Tokunaga, Yukihiko AU - Tokunaga Y AD - Department of Surgery, Japan Post Kyoto Teishin Hospital, Kyoto, Japan. FAU - Fujii, Akitomo AU - Fujii A AD - Department of Surgery, Rinku General Medical Center, Osaka, Japan. FAU - Nagata, Naoki AU - Nagata N AD - Kitakyushu General Hospital, Kitakyushu, Japan. FAU - Oba, Koji AU - Oba K AD - Department of Epidemiology & Biostatistics, University of Tokyo, Tokyo, Japan. FAU - Mishima, Hideyuki AU - Mishima H AD - Clinical Cancer Center, Aichi Medical University, Nagakute, Aichi, Japan. LA - eng PT - Clinical Trial, Phase II PT - Comparative Study PT - Journal Article PT - Multicenter Study PT - Randomized Controlled Trial DEP - 20151016 PL - Japan TA - Int J Clin Oncol JT - International journal of clinical oncology JID - 9616295 RN - 0 (Antineoplastic Agents) RN - 0 (Organoplatinum Compounds) RN - 0 (Oxaloacetates) RN - 04ZR38536J (Oxaliplatin) RN - 0W860991D6 (Deoxycytidine) RN - 6804DJ8Z9U (Capecitabine) RN - U3P01618RT (Fluorouracil) RN - XELOX SB - IM MH - Adult MH - Aged MH - Aged, 80 and over MH - Antineoplastic Agents/*administration & dosage/adverse effects MH - Antineoplastic Combined Chemotherapy Protocols/*administration & dosage/adverse effects MH - Capecitabine MH - Colorectal Neoplasms/*drug therapy/*pathology MH - Deoxycytidine/administration & dosage/adverse effects/*analogs & derivatives MH - Diarrhea/chemically induced MH - Disease-Free Survival MH - Drug Administration Schedule MH - Fatigue/chemically induced MH - Female MH - Fluorouracil/administration & dosage/adverse effects/*analogs & derivatives MH - Humans MH - Male MH - Middle Aged MH - Neoplasm Metastasis MH - Nervous System Diseases/chemically induced MH - Organoplatinum Compounds/*administration & dosage/adverse effects MH - Oxaliplatin MH - Oxaloacetates MH - Retreatment MH - Survival Rate OTO - NOTNLM OT - Metastatic colorectal cancer OT - Oxaliplatine OT - Reintroduction EDAT- 2015/10/18 06:00 MHDA- 2017/01/12 06:00 CRDT- 2015/10/18 06:00 PHST- 2015/08/23 00:00 [received] PHST- 2015/09/28 00:00 [accepted] PHST- 2015/10/18 06:00 [entrez] PHST- 2015/10/18 06:00 [pubmed] PHST- 2017/01/12 06:00 [medline] AID - 10.1007/s10147-015-0911-7 [pii] AID - 10.1007/s10147-015-0911-7 [doi] PST - ppublish SO - Int J Clin Oncol. 2016 Jun;21(3):566-72. doi: 10.1007/s10147-015-0911-7. Epub 2015 Oct 16.