PMID- 32666389 OWN - NLM STAT- MEDLINE DCOM- 20201125 LR - 20231104 IS - 1437-7772 (Electronic) IS - 1341-9625 (Print) IS - 1341-9625 (Linking) VI - 25 IP - 10 DP - 2020 Oct TI - Impact of single-heterozygous UGT1A1 on the clinical outcomes of irinotecan monotherapy after fluoropyrimidine and platinum-based combination therapy for gastric cancer: a multicenter retrospective study. PG - 1800-1806 LID - 10.1007/s10147-020-01720-y [doi] AB - BACKGROUND: It is unclear whether the UGT1A1 status, single heterozygous (SH) or wild type (WT), is associated with the efficacy and toxicity of irinotecan monotherapy in advanced gastric cancer (AGC). We investigated the association between clinical outcomes (efficacy and safety) and UGT1A1 status in patients who received irinotecan monotherapy. METHODS: We evaluated AGC patients who received irinotecan monotherapy between January 2011 and December 2017. Efficacy was assessed according to overall survival (OS) and progression-free survival (PFS). Toxicity was graded using the Common Toxicity Criteria for Adverse Events (version 4.0). RESULTS: A total of 100 patients were evaluated (62 and 38 patients with UGT1A1 WT and SH, respectively). In the WT and SH groups, the irinotecan dose was reduced in 19 (30.6%) and 18 (47.2%) patients (p = 0.135), respectively; treatment was delayed due to adverse events (AEs) in 19 (30.6%) and 13 (34.2%) patients (p = 0.826), respectively; the median PFS was 3.15 and 3.25 months (HR, 0.734; 95% CI 0.465-1.158; p = 0.184), respectively; and the median OS was 10.4 and 7.26 months (HR, 1.137; 95% CI 0.752-1.721; p = 0.543), respectively. Severe hematological AEs (Grade >/= 3) were significantly more frequent in the SH group than in the WT group (63% vs. 36%; p = 0.008), while severe non-hematological AEs was not significantly different (16.0% vs. 6.5%; p = 0.173). CONCLUSION: There was no significant difference in the efficacy of irinotecan monotherapy between UGT1A1 WT and UGT1A1 SH, but UGT1A1 SH was associated with a high frequency of severe hematological toxicity. FAU - Nakano, Shintaro AU - Nakano S AD - Department of Gastroenterology and Hepatology, Hokkaido University Hospital, Kita14, Nishi5, Kita-Ku, Sapporo, Hokkaido, 060-8648, Japan. FAU - Yuki, Satoshi AU - Yuki S AD - Department of Gastroenterology and Hepatology, Hokkaido University Hospital, Kita14, Nishi5, Kita-Ku, Sapporo, Hokkaido, 060-8648, Japan. FAU - Kawamoto, Yasuyuki AU - Kawamoto Y AD - Department of Gastroenterology and Hepatology, Hokkaido University Hospital, Kita14, Nishi5, Kita-Ku, Sapporo, Hokkaido, 060-8648, Japan. FAU - Nakatsumi, Hiroshi AU - Nakatsumi H AD - Division of Cancer Center, Hokkaido University Hospital, Kita14, Nishi5, Kita-Ku, Sapporo, Hokkaido, 060-8648, Japan. FAU - Ando, Takayuki AU - Ando T AD - Department of Gastroenterology and Hematology, Faculty of Medicine, University of Toyama, 2630, Sugitani, Toyama-shi, Toyama, 930-0194, Japan. FAU - Kajiura, Shinya AU - Kajiura S AD - Department of Gastroenterology and Hematology, Faculty of Medicine, University of Toyama, 2630, Sugitani, Toyama-shi, Toyama, 930-0194, Japan. FAU - Yoshikawa, Ayumu AU - Yoshikawa A AD - Department of Medical Oncology, Kushiro Rosai Hospital, 13-23 Nakazono-cho, Kushiro, Hokkaido, 085-8533, Japan. FAU - Harada, Kazuaki AU - Harada K AD - Department of Medical Oncology, Kushiro Rosai Hospital, 13-23 Nakazono-cho, Kushiro, Hokkaido, 085-8533, Japan. FAU - Hatanaka, Kazuteru AU - Hatanaka K AD - Department of Gastroenterology, Hakodate Municipal Hospital, 1-10-1 Minatomachi, Hakodate, Hokkaido, 041-8680, Japan. FAU - Tanimoto, Aya AU - Tanimoto A AD - Department of Medical Oncology, Teine Keijinkai Hospital, 1-40, Maeda1-12, Teine-Ku, Sapporo, Hokkaido, 006-8555, Japan. FAU - Ishiguro, Atsushi AU - Ishiguro A AD - Department of Medical Oncology, Teine Keijinkai Hospital, 1-40, Maeda1-12, Teine-Ku, Sapporo, Hokkaido, 006-8555, Japan. FAU - Honda, Takuya AU - Honda T AD - Division of Clinical Oncology Center, Nagasaki University Hospital, 1-7-1, Sakamoto, Nagasaki, 852-8501, Japan. FAU - Dazai, Masayoshi AU - Dazai M AD - Department of Gastroenterology, Sapporo Medical Center NTT EC, Minami1, Nishi5, Chuo-Ku, Sapporo, Hokkaido, 060-0061, Japan. FAU - Sasaki, Takahide AU - Sasaki T AD - Department of Internal Medicine, Hokkaido Gastroenterology Hospital, 2-10, Honcho1-1, Higashi-Ku, Sapporo, Hokkaido, 065-0041, Japan. FAU - Sakamoto, Naoya AU - Sakamoto N AD - Department of Gastroenterology and Hepatology, Hokkaido University Hospital, Kita14, Nishi5, Kita-Ku, Sapporo, Hokkaido, 060-8648, Japan. FAU - Komatsu, Yoshito AU - Komatsu Y AUID- ORCID: 0000-0002-1570-6802 AD - Division of Cancer Center, Hokkaido University Hospital, Kita14, Nishi5, Kita-Ku, Sapporo, Hokkaido, 060-8648, Japan. ykomatsu@ac.cyberhome.ne.jp. LA - eng PT - Journal Article PT - Multicenter Study DEP - 20200714 PL - Japan TA - Int J Clin Oncol JT - International journal of clinical oncology JID - 9616295 RN - 0 (Platinum Compounds) RN - 0 (Pyrimidines) RN - 675-21-8 (5-fluoropyrimidine) RN - 7673326042 (Irinotecan) RN - EC 2.4.1.- (UGT1A1 enzyme) RN - EC 2.4.1.17 (Glucuronosyltransferase) SB - IM MH - Adult MH - Aged MH - Aged, 80 and over MH - Antineoplastic Combined Chemotherapy Protocols/adverse effects/*therapeutic use MH - Female MH - Glucuronosyltransferase/*genetics MH - Heterozygote MH - Humans MH - Irinotecan/adverse effects/*therapeutic use MH - Male MH - Middle Aged MH - Platinum Compounds/administration & dosage MH - Pyrimidines/administration & dosage/*therapeutic use MH - Retrospective Studies MH - Stomach Neoplasms/*drug therapy/genetics/mortality MH - Treatment Outcome MH - Young Adult PMC - PMC7498487 OTO - NOTNLM OT - Gastric cancer OT - Irinotecan OT - UGT1A1 COIS- Yoshito Komatsu has received honoraria from Taiho, Yakult, and Daichi-Sankyo and research grants from Taiho, Yakult, and Daichi-Sankyo. All remaining authors declare that they have no conflict of interest. EDAT- 2020/07/16 06:00 MHDA- 2020/11/26 06:00 PMCR- 2020/07/14 CRDT- 2020/07/16 06:00 PHST- 2020/03/16 00:00 [received] PHST- 2020/06/02 00:00 [accepted] PHST- 2020/07/16 06:00 [pubmed] PHST- 2020/11/26 06:00 [medline] PHST- 2020/07/16 06:00 [entrez] PHST- 2020/07/14 00:00 [pmc-release] AID - 10.1007/s10147-020-01720-y [pii] AID - 1720 [pii] AID - 10.1007/s10147-020-01720-y [doi] PST - ppublish SO - Int J Clin Oncol. 2020 Oct;25(10):1800-1806. doi: 10.1007/s10147-020-01720-y. Epub 2020 Jul 14.