PMID- 33342205 OWN - NLM STAT- MEDLINE DCOM- 20210727 LR - 20210727 IS - 1308-5263 (Electronic) IS - 1300-7777 (Print) IS - 1300-7777 (Linking) VI - 38 IP - 1 DP - 2021 Feb 25 TI - Original Versus Generic Lenalidomide in Patients with Relapsed/Refractory Multiple Myeloma: Comparison of Efficacy and Adverse Events. PG - 41-48 LID - 10.4274/tjh.galenos.2020.2020.0169 [doi] AB - OBJECTIVE: Lenalidomide is an effective immunomodulatory derivative drug used in the treatment of multiple myeloma (MM). It is available in original and generic forms in Turkey, but there is no clinical study that has compared the effectiveness and adverse events (AEs) of the generic and original forms of lenalidomide. We compared the effectivity and AEs of generic and original lenalidomide in patients with relapsed/refractory MM (RRMM). MATERIALS AND METHODS: Patients with RRMM using original or generic lenalidomide were evaluated retrospectively. Overall response (OR), complete response (CR), very good partial response (VGPR), partial response (PR), stable disease, and progressive disease rates and hematologic and nonhematologic AEs were evaluated in these RRMM patients. The results were described as numbers, frequencies, and percentages and were analyzed using PASW 19.0 for Windows with chi-square and Fisher exact tests. RESULTS: The number of patients using original lenalidomide was 55 and the number of patients using generic lenalidomide was 43. The OR rate was 67.2% for patients using original lenalidomide and 60.4% for those on generic lenalidomide. CR and VGPR rates were 14.5% and 45.4% in the original group while the CR and VGPR rates were 20.9% and 18.6%, respectively, in patients using generic lenalidomide. Hematologic AEs were similar in the two groups while some nonhematologic AEs were less common in the original lenalidomide group than the generic group. Only pyrexia as a grade 3-4 AE was more common in the original lenalidomide than the generic lenalidomide group. CONCLUSION: This study showed that the generic form of lenalidomide has similar efficacy with the original form of lenalidomide in the treatment of RRMM. The AEs of original lenalidomide were generally fewer than those of generic lenalidomide. Further studies involving a larger number of patients with RRMM would be useful for comparing the efficacy and AEs of original and generic lenalidomide. FAU - Bolaman, Ali Zahit AU - Bolaman AZ AUID- ORCID: 0000-0003-0651-5462 AD - Aydin Adnan Menderes University Faculty of Medicine, Department of Hematology, Aydin, Turkey FAU - Turgutkaya, Atakan AU - Turgutkaya A AUID- ORCID: 0000-0001-8428-4730 AD - Aydin Adnan Menderes University Faculty of Medicine, Department of Hematology, Aydin, Turkey FAU - Sahip, Birsen AU - Sahip B AUID- ORCID: 0000-0001-5375-6432 AD - Zonguldak Bulent Ecevit University Faculty of Medicine, Division of Hematology, Zonguldak, Turkey FAU - Selim, Cem AU - Selim C AUID- ORCID: 0000-0002-2717-8306 AD - Aydin Adnan Menderes University Faculty of Medicine, Department of Hematology, Aydin, Turkey FAU - Eroglu Kucukerdiler, Hilal AU - Eroglu Kucukerdiler H AUID- ORCID: 0000-0002-2604-3127 AD - Aydin Adnan Menderes University Faculty of Medicine, Department of Hematology, Aydin, Turkey FAU - Ertop, Sehmus AU - Ertop S AUID- ORCID: 0000-0001-8771-7343 AD - Zonguldak Bulent Ecevit University Faculty of Medicine, Division of Hematology, Zonguldak, Turkey FAU - Sargin, Gokhan AU - Sargin G AUID- ORCID: 0000-0002-3778-8351 AD - Aydin Adnan Menderes University Faculty of Medicine, Department of Immunology-Rheumatology, Aydin, Turkey FAU - Yavasoglu, Irfan AU - Yavasoglu I AUID- ORCID: 0000-0003-1703-2175 AD - Aydin Adnan Menderes University Faculty of Medicine, Department of Hematology, Aydin, Turkey LA - eng PT - Comparative Study PT - Journal Article DEP - 20201221 PL - Turkey TA - Turk J Haematol JT - Turkish journal of haematology : official journal of Turkish Society of Haematology JID - 9606065 RN - 0 (Drugs, Generic) RN - F0P408N6V4 (Lenalidomide) SB - IM MH - Aged MH - Antineoplastic Combined Chemotherapy Protocols/adverse effects/therapeutic use MH - Disease Progression MH - Drug Resistance, Neoplasm MH - Drugs, Generic/administration & dosage/adverse effects/*therapeutic use MH - Female MH - Humans MH - Lenalidomide/administration & dosage/adverse effects/*therapeutic use MH - Male MH - Middle Aged MH - Multiple Myeloma/diagnosis/*drug therapy/mortality MH - Neoplasm Grading MH - Neoplasm Staging MH - Odds Ratio MH - Recurrence MH - Retreatment MH - Treatment Outcome PMC - PMC7927438 OTO - NOTNLM OT - Lenalidomide OT - Treatment OT - Original OT - Generic OT - Adverse effect COIS- Conflict of Interest: No conflict of interest was declared by the authors. EDAT- 2020/12/22 06:00 MHDA- 2021/07/28 06:00 PMCR- 2021/03/01 CRDT- 2020/12/21 03:28 PHST- 2020/12/21 03:28 [entrez] PHST- 2020/12/22 06:00 [pubmed] PHST- 2021/07/28 06:00 [medline] PHST- 2021/03/01 00:00 [pmc-release] AID - 44784 [pii] AID - 10.4274/tjh.galenos.2020.2020.0169 [doi] PST - ppublish SO - Turk J Haematol. 2021 Feb 25;38(1):41-48. doi: 10.4274/tjh.galenos.2020.2020.0169. Epub 2020 Dec 21.