PMID- 34481658 OWN - NLM STAT- MEDLINE DCOM- 20220418 LR - 20220531 IS - 1535-6345 (Electronic) IS - 0147-0272 (Linking) VI - 46 IP - 1 DP - 2022 Feb TI - Limited benefits of thalidomide and dexamethasone maintenance after autologous stem cell transplantation in newly diagnosed multiple myeloma patients: a prospective phase II multi-center study in Korea. PG - 100786 LID - S0147-0272(21)00103-3 [pii] LID - 10.1016/j.currproblcancer.2021.100786 [doi] AB - Although the clinical outcome of newly diagnosed multiple myeloma has improved with maintenance therapy, maintenance with novel agents is not always available depending on medical expenses or drug accessibility. We intended to investigate the efficacy and toxicity of thalidomide/dexamethasone maintenance in Korean patients. In this multicenter phase 2 study, patients with newly diagnosed myeloma who underwent induction chemotherapy followed by autologous stem cell transplantation (ASCT) were enrolled to receive maintenance treatment of 100mg thalidomide daily for 28 days and 40mg dexamethasone daily for 4 days each cycle. Maintenance was given up to 12 cycles. The primary endpoint was a 1-year event free survival (EFS) rate. It was assumed that EFS at 1-year would be 91% with thalidomide and 1-year EFS below 82% would be of no effect. A total of 43 patients were consecutively enrolled (median age, 58 years [range, 34 - 65]; male, n = 31). With a median follow-up duration of 17.3 months (range, 1.1 - 32.2), EFS at 1 year was 65.1% (95% confidence interval [CI], 48.9 - 77.3). PFS and OS at 1 year was 85.6% (95% CI, 70.7 - 93.3) and 90.4 (95% CI, 76.3 - 96.3), respectively. In terms of side effects, 39 patients (90.7%) experienced adverse events (AEs) of any grade, and 14 patients (32.6%) experienced grade 3 or 4 adverse events. 15 patients (34.9%) failed to complete 12 cycles of maintenance, and the most common reason for premature termination was AEs (n = 6). In Korean patients the benefits of thalidomide maintenance does not seem to outweigh the toxicity of thalidomide, especially in high-risk MM. Considering the long clinical course of MM, preservation of quality of life and finances might be more beneficial for subsequent MM treatment. CI - Copyright (c) 2021. Published by Elsevier Inc. FAU - Byun, Ja Min AU - Byun JM AD - Department of Internal Medicine, Seoul National University College of Medicine, Seoul National University Hospital, Seoul, Korea; Cancer Research Institute, Seoul National University College of Medicine, Seoul, Korea. FAU - Kim, Sang-A AU - Kim SA AD - Department of Internal Medicine, Seoul National University College of Medicine, Seoul National University Hospital, Seoul, Korea. FAU - Koh, Youngil AU - Koh Y AD - Department of Internal Medicine, Seoul National University College of Medicine, Seoul National University Hospital, Seoul, Korea; Cancer Research Institute, Seoul National University College of Medicine, Seoul, Korea. FAU - Shin, Dong-Yeop AU - Shin DY AD - Department of Internal Medicine, Seoul National University College of Medicine, Seoul National University Hospital, Seoul, Korea; Cancer Research Institute, Seoul National University College of Medicine, Seoul, Korea. FAU - Kwon, Ji Hyun AU - Kwon JH AD - Department of Internal Medicine, Chungbuk National University Hospital, Cheongju, Korea. FAU - Kim, Jin Seok AU - Kim JS AD - Division of Hematology, Department of Internal Medicine, Yonsei University College of Medicine, Severance Hospital, Seoul, Korea. FAU - Kim, Kihyun AU - Kim K AD - Division of Haematology-Oncology, Department of Medicine, Samsung Medical Centre, Sungkyunkwan University School of Medicine, Seoul, Korea. FAU - Min, Chang-Ki AU - Min CK AD - Department of Hematology, Seoul St Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea. FAU - Eom, Hyeon-Seok AU - Eom HS AD - Hematology-Oncology Clinic, National Cancer Center, Goyang, Korea. FAU - Lee, Je-Jung AU - Lee JJ AD - Department of Hematology-Oncology, Chonnam National University Hwasun Hospital, Hwasun, Korea. FAU - Bang, Soo-Mee AU - Bang SM AD - Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Korea. FAU - Yoon, Sung-Soo AU - Yoon SS AD - Department of Internal Medicine, Seoul National University College of Medicine, Seoul National University Hospital, Seoul, Korea; Cancer Research Institute, Seoul National University College of Medicine, Seoul, Korea. Electronic address: ssysmc@snu.ac.kr. LA - eng PT - Clinical Trial, Phase II PT - Journal Article PT - Multicenter Study PT - Research Support, Non-U.S. Gov't DEP - 20210820 PL - United States TA - Curr Probl Cancer JT - Current problems in cancer JID - 7702986 RN - 4Z8R6ORS6L (Thalidomide) RN - 7S5I7G3JQL (Dexamethasone) SB - IM MH - *Antineoplastic Combined Chemotherapy Protocols/adverse effects MH - Dexamethasone/therapeutic use MH - *Hematopoietic Stem Cell Transplantation MH - Humans MH - Male MH - Middle Aged MH - *Multiple Myeloma/diagnosis/drug therapy MH - Prospective Studies MH - Quality of Life MH - Thalidomide/therapeutic use MH - Transplantation, Autologous MH - Treatment Outcome OTO - NOTNLM OT - Autologous stem cell transplantation OT - Maintenance OT - Multiple myeloma OT - Thalidomide EDAT- 2021/09/06 06:00 MHDA- 2022/04/19 06:00 CRDT- 2021/09/05 20:28 PHST- 2020/12/14 00:00 [received] PHST- 2021/06/21 00:00 [revised] PHST- 2021/07/27 00:00 [accepted] PHST- 2021/09/06 06:00 [pubmed] PHST- 2022/04/19 06:00 [medline] PHST- 2021/09/05 20:28 [entrez] AID - S0147-0272(21)00103-3 [pii] AID - 10.1016/j.currproblcancer.2021.100786 [doi] PST - ppublish SO - Curr Probl Cancer. 2022 Feb;46(1):100786. doi: 10.1016/j.currproblcancer.2021.100786. Epub 2021 Aug 20.