PMID- 31950647 OWN - NLM STAT- MEDLINE DCOM- 20210423 LR - 20210423 IS - 2045-7634 (Electronic) IS - 2045-7634 (Linking) VI - 9 IP - 5 DP - 2020 Mar TI - Elevated eosinophil level predicted long time to next treatment in relapsed or refractory myeloma patients treated with lenalidomide. PG - 1694-1702 LID - 10.1002/cam4.2828 [doi] AB - Lenalidomide is an immunomodulatory drug that is administered commonly in patients with relapsed or refractory multiple myeloma (RRMM). Eosinophils have immunological functions, for instance, in allergic diseases and asthma. The purpose of this study was to investigate the clinical significance of elevated eosinophil levels in patients with RRMM treated with lenalidomide. A total of 59 patients were included. Elevated eosinophil level was defined as an increase in the eosinophil count of >/=250/microL from the eosinophil count on day 1 during the first cycle. The percentage of patients with elevated eosinophil levels was 22.0%. The overall response ratio in the elevated eosinophil group and nonelevated eosinophil group was 84.6% and 63.0% (P = .189), respectively. The median time to next treatment (TTNT) in the elevated eosinophil group was significantly longer than that in the nonelevated group (40.3 months vs 8.4 months; P = .017). Additionally, TTNT in the elevated eosinophil group with partial response (PR) or better was significantly longer than that in the nonelevated eosinophil group with PR or better (40.3 months vs 11.9 months; P = .021). We concluded that elevated eosinophil levels were frequently observed and might predict a longer TTNT in patients with RRMM treated with lenalidomide. CI - (c) 2020 The Authors. Cancer Medicine published by John Wiley & Sons Ltd. FAU - Suzuki, Kazuhito AU - Suzuki K AUID- ORCID: 0000-0002-0300-378X AD - Division of Clinical Oncology and Hematology, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan. AD - Division of Clinical Oncology and Hematology, Department of Internal Medicine, The Jikei University Kashiwa Hospital, Kashiwa, Chiba, Japan. FAU - Nishiwaki, Kaichi AU - Nishiwaki K AUID- ORCID: 0000-0003-2188-1241 AD - Division of Clinical Oncology and Hematology, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan. AD - Division of Clinical Oncology and Hematology, Department of Internal Medicine, The Jikei University Kashiwa Hospital, Kashiwa, Chiba, Japan. FAU - Gunji, Tadahiro AU - Gunji T AD - Division of Clinical Oncology and Hematology, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan. FAU - Katori, Mitsuji AU - Katori M AD - Division of Clinical Oncology and Hematology, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan. AD - Division of Clinical Oncology and Hematology, Department of Internal Medicine, The Jikei University Kashiwa Hospital, Kashiwa, Chiba, Japan. FAU - Masuoka, Hidekazu AU - Masuoka H AD - Division of Clinical Oncology and Hematology, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan. AD - Division of Clinical Oncology and Hematology, Department of Internal Medicine, The Jikei University Kashiwa Hospital, Kashiwa, Chiba, Japan. FAU - Yano, Shingo AU - Yano S AD - Division of Clinical Oncology and Hematology, Department of Internal Medicine, The Jikei University School of Medicine, Tokyo, Japan. LA - eng PT - Journal Article DEP - 20200116 PL - United States TA - Cancer Med JT - Cancer medicine JID - 101595310 RN - F0P408N6V4 (Lenalidomide) SB - IM MH - Aged MH - Aged, 80 and over MH - Antineoplastic Combined Chemotherapy Protocols/*administration & dosage MH - Disease Progression MH - Drug Resistance, Neoplasm/immunology MH - Eosinophils/*immunology MH - Female MH - Follow-Up Studies MH - Humans MH - Lenalidomide/*administration & dosage MH - Leukocyte Count MH - Male MH - Middle Aged MH - Multiple Myeloma/blood/*drug therapy/immunology MH - Neoplasm Recurrence, Local/blood/*drug therapy/immunology MH - Predictive Value of Tests MH - Prognosis MH - Retrospective Studies MH - Time Factors MH - Time-to-Treatment/*statistics & numerical data PMC - PMC7050101 OTO - NOTNLM OT - chemotherapy OT - hematological cancer OT - immunology EDAT- 2020/01/18 06:00 MHDA- 2021/04/24 06:00 PMCR- 2020/01/16 CRDT- 2020/01/18 06:00 PHST- 2019/10/28 00:00 [received] PHST- 2019/12/17 00:00 [revised] PHST- 2019/12/26 00:00 [accepted] PHST- 2020/01/18 06:00 [pubmed] PHST- 2021/04/24 06:00 [medline] PHST- 2020/01/18 06:00 [entrez] PHST- 2020/01/16 00:00 [pmc-release] AID - CAM42828 [pii] AID - 10.1002/cam4.2828 [doi] PST - ppublish SO - Cancer Med. 2020 Mar;9(5):1694-1702. doi: 10.1002/cam4.2828. Epub 2020 Jan 16.