PMID- 32699904 OWN - NLM STAT- MEDLINE DCOM- 20210416 LR - 20210416 IS - 1462-0332 (Electronic) IS - 1462-0324 (Linking) VI - 60 IP - 1 DP - 2021 Jan 5 TI - Efficacy and safety of Sandoz biosimilar rituximab for active rheumatoid arthritis: 52-week results from the randomized controlled ASSIST-RA trial. PG - 256-262 LID - 10.1093/rheumatology/keaa234 [doi] AB - OBJECTIVES: This report provides data for the extent of B cell depletion and recovery, efficacy, safety and immunogenicity of Sandoz rituximab (SDZ-RTX; GP2013; Rixathon(R)) compared with reference rituximab (Ref-RTX) up to week 52 of the ASSIST-RA study. METHODS: Patients were randomized to SDZ-RTX or Ref-RTX in combination with methotrexate according to the RTX label. The primary endpoint was analysed at week 24. Responders (28-joint DAS [DAS28] decrease from baseline >1.2) at week 24 with residual disease activity (DAS28 >/=2.6) were eligible for a second treatment course between week 24 and 52. Endpoints after week 24 included change from baseline in peripheral B cells, DAS28, ACR 20% response rate (ACR20), Clinical and Simplified Disease Activity Indexes (CDAI, SDAI) and HAQ disability index (HAQ-DI). Safety and immunogenicity were assessed by the incidence of adverse events and antidrug antibodies. RESULTS: Primary and secondary endpoints up to week 24 were met. Overall, 260/312 randomized patients completed treatment up to week 52. SDZ-RTX resulted in B cell concentrations over time similar to Ref-RTX. The efficacy of SDZ-RTX was similar to Ref-RTX up to week 52, as measured by DAS28, ACR20/50/70, CDAI, SDAI and HAQ-DI. Safety of SDZ-RTX was similar to Ref-RTX regarding frequency, type and severity of adverse events, which were consistent with the known Ref-RTX safety profile. The incidence of antidrug antibodies was low and transient similarly across treatment groups. CONCLUSION: SDZ-RTX demonstrated similar B cell concentrations over time, efficacy, safety and immunogenicity to Ref-RTX over 52 weeks of the ASSIST-RA study. CI - (c) The Author(s) 2020. Published by Oxford University Press on behalf of the British Society for Rheumatology. All rights reserved. For permissions, please email: journals.permissions@oup.com. FAU - Smolen, Josef S AU - Smolen JS AD - Department of Rheumatology, Medical University of Vienna, Vienna, Austria. FAU - Cohen, Stanley B AU - Cohen SB AD - Department of Rheumatology, Metroplex Clinical Research Center, Dallas, TX, USA. FAU - Tony, Hans-Peter AU - Tony HP AD - Department of Internal Medicine, Rheumatology/Clinical Immunology, University Hospital of Wuerzburg, Wuerzburg, Germany. FAU - Scheinberg, Morton AU - Scheinberg M AD - Rheumatology Section, Orthopedic Department, Hospital Israelita Albert Einstein, Sao Paulo, Brazil. FAU - Kivitz, Alan AU - Kivitz A AD - Altoona Center for Clinical Research, Altoona Arthritis and Osteoporosis Center, Duncansville, PA, USA. FAU - Balanescu, Andra AU - Balanescu A AD - Sf. Maria Hospital, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania. FAU - Gomez-Reino, Juan AU - Gomez-Reino J AD - Fundacion IDIS, Hospital Clinico Universitario, Santiago, Spain. FAU - Cen, Liyi AU - Cen L AD - Biostatistics Biosimilars Analytics, Novartis Pharmaceuticals Corp, East Hanover, NJ, USA. FAU - Poetzl, Johann AU - Poetzl J AD - Biosimilar Clinical Development, Hexal AG, Holzkirchen, Germany. FAU - Shisha, Tamas AU - Shisha T AD - Translational Medicine, Novartis Institute of Biomedical Research, Basel, Switzerland. FAU - Kollins, Dmitrij AU - Kollins D AD - Biosimilar Clinical Development, Hexal AG, Holzkirchen, Germany. LA - eng PT - Journal Article PT - Randomized Controlled Trial PT - Research Support, Non-U.S. Gov't PL - England TA - Rheumatology (Oxford) JT - Rheumatology (Oxford, England) JID - 100883501 RN - 0 (Antirheumatic Agents) RN - 0 (Biosimilar Pharmaceuticals) RN - 4F4X42SYQ6 (Rituximab) RN - YL5FZ2Y5U1 (Methotrexate) SB - IM MH - Antirheumatic Agents/adverse effects/immunology/*therapeutic use MH - Arthritis, Rheumatoid/*drug therapy/immunology MH - B-Lymphocytes/cytology MH - Biosimilar Pharmaceuticals/adverse effects/*therapeutic use MH - Drug Therapy, Combination/methods MH - Humans MH - Methotrexate/therapeutic use MH - Remission Induction MH - Rituximab/adverse effects/immunology/*therapeutic use MH - Therapeutic Equivalency MH - Time Factors OTO - NOTNLM OT - bioequivalence OT - biosimilar OT - efficacy OT - immunogenicity OT - pharmacodynamics OT - rheumatoid arthritis OT - rituximab OT - safety EDAT- 2020/07/24 06:00 MHDA- 2021/04/17 06:00 CRDT- 2020/07/24 06:00 PHST- 2019/11/20 00:00 [received] PHST- 2020/04/03 00:00 [revised] PHST- 2020/07/24 06:00 [pubmed] PHST- 2021/04/17 06:00 [medline] PHST- 2020/07/24 06:00 [entrez] AID - 5875396 [pii] AID - 10.1093/rheumatology/keaa234 [doi] PST - ppublish SO - Rheumatology (Oxford). 2021 Jan 5;60(1):256-262. doi: 10.1093/rheumatology/keaa234.