PMID- 29045077 OWN - NLM STAT- MEDLINE DCOM- 20190111 LR - 20220330 IS - 2326-5205 (Electronic) IS - 2326-5191 (Linking) VI - 70 IP - 1 DP - 2018 Jan TI - Subjective Complaints as the Main Reason for Biosimilar Discontinuation After Open-Label Transition From Reference Infliximab to Biosimilar Infliximab. PG - 60-68 LID - 10.1002/art.40324 [doi] AB - OBJECTIVE: To evaluate drug survival, effectiveness, pharmacokinetics, immunogenicity, and safety in daily practice after transitioning treatment from original reference infliximab (Remicade [REM]) to a biosimilar infliximab (CT-P13 [Remsima; Inflectra]) in patients with rheumatoid arthritis, psoriatic arthritis, or ankylosing spondylitis. METHODS: Of the initial 222 REM-treated patients, 192 agreed to transition to CT-P13 and were included in this multicenter prospective cohort study. Changes in the Disease Activity Score in 28 joints using the C-reactive protein level (DAS28-CRP) and the Bath Ankylosing Spondylitis Disease Activity Index (BASDAI) and changes in the CRP levels, infliximab trough levels, and anti-infliximab antibody levels were assessed after 6 months, and adverse events (AEs) were documented. Drug survival and prognostic factors were analyzed using Kaplan-Meier and Cox regression analyses. RESULTS: During 6 months follow-up, 24% of the patients (n = 47) discontinued CT-P13. Thirty-seven patients restarted REM, 7 switched to another biologic drug, and 3 continued without a biologic drug. The DAS28-CRP remained stable from baseline to month 6, with a mean +/- SD score of 2.2 +/- 0.9 at baseline to 2.2 +/- 0.8 at 6 months (difference of 0.0 [95% confidence interval (95% CI) -0.1, 0.2]). The BASDAI increased from a mean +/- SD of 3.8 +/- 2.0 at baseline to 4.3 +/- 2.1 at 6 months (difference of +0.5 [95% CI 0.1, 0.9]). The CRP levels, infliximab trough levels, and anti-infliximab antibody levels did not change. Just prior to CT-P13 discontinuation, the DAS28-CRP components tender joint count and patient's global assessment of disease activity, as well as the BASDAI were increased compared to baseline. The most frequently reported AEs were arthralgia, fatigue, pruritus, and myalgia. A shorter REM infusion interval (hazard ratio: 0.77 [95% CI 0.62, 0.95]) at baseline was predictive of discontinuing CT-P13. CONCLUSION: In our cohort, one-fourth of patients discontinued CT-P13 during 6 months of follow-up, mainly due to an increase in the subjective features of the tender joint count and the patient's global assessment of disease activity and/or subjective AEs, possibly explained by nocebo effects and/or incorrect causal attribution effects. CI - (c) 2017, American College of Rheumatology. FAU - Tweehuysen, Lieke AU - Tweehuysen L AD - Sint Maartenskliniek, Nijmegen, The Netherlands. FAU - van den Bemt, Bart J F AU - van den Bemt BJF AD - Sint Maartenskliniek and Radboud University Medical Center, Nijmegen, The Netherlands. FAU - van Ingen, Iris L AU - van Ingen IL AD - Radboud University Medical Center, Nijmegen, The Netherlands. FAU - de Jong, Alphons J L AU - de Jong AJL AD - Rijnstate, Arnhem, The Netherlands. FAU - van der Laan, Willemijn H AU - van der Laan WH AD - Maartenskliniek, Woerden, The Netherlands. FAU - van den Hoogen, Frank H J AU - van den Hoogen FHJ AD - Sint Maartenskliniek and Radboud University Medical Center, Nijmegen, The Netherlands. FAU - den Broeder, Alfons A AU - den Broeder AA AD - Sint Maartenskliniek and Radboud University Medical Center, Nijmegen, The Netherlands. LA - eng SI - NTR/NTR5279 PT - Journal Article PT - Multicenter Study PT - Research Support, Non-U.S. Gov't DEP - 20171207 PL - United States TA - Arthritis Rheumatol JT - Arthritis & rheumatology (Hoboken, N.J.) JID - 101623795 RN - 0 (Antibodies, Monoclonal) RN - 0 (Antirheumatic Agents) RN - 0 (Biosimilar Pharmaceuticals) RN - 0 (CT-P13) RN - 9007-41-4 (C-Reactive Protein) RN - B72HH48FLU (Infliximab) SB - IM MH - Adult MH - Aged MH - Antibodies, Monoclonal/*adverse effects/therapeutic use MH - Antirheumatic Agents/adverse effects/immunology/*therapeutic use MH - Arthritis/*drug therapy MH - Biosimilar Pharmaceuticals/*adverse effects/therapeutic use MH - C-Reactive Protein MH - Cohort Studies MH - Drug Substitution/adverse effects MH - Female MH - Follow-Up Studies MH - Humans MH - Infliximab/adverse effects/immunology/*therapeutic use MH - Kaplan-Meier Estimate MH - Male MH - Middle Aged MH - Prospective Studies MH - Severity of Illness Index MH - Treatment Outcome MH - Withholding Treatment EDAT- 2017/10/19 06:00 MHDA- 2019/01/12 06:00 CRDT- 2017/10/19 06:00 PHST- 2017/04/26 00:00 [received] PHST- 2017/09/11 00:00 [accepted] PHST- 2017/10/19 06:00 [pubmed] PHST- 2019/01/12 06:00 [medline] PHST- 2017/10/19 06:00 [entrez] AID - 10.1002/art.40324 [doi] PST - ppublish SO - Arthritis Rheumatol. 2018 Jan;70(1):60-68. doi: 10.1002/art.40324. Epub 2017 Dec 7.