Observational studyRheumatology (Oxford, England)2022
Comparison of treatment retention of originator vs biosimilar products in clinical rheumatology practice in Sweden.
Observational study in Rheumatology (Oxford, England), 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 1 of them a synthesis that pooled it.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
15 citing papers in PubMed, 1 synthesis or guideline pooled it, 20 citations in OpenAlex.
- Comparative effectiveness and safety of biosimilars versus reference biologics in rheumatoid arthritis during treatment initiation: a systematic review of real-world evidence.International journal of clinical pharmacy · 2025Pooled it
- Safety and effectiveness of rituximab biosimilar (Rituximab-GP2013) versus originator in rheumatoid arthritis: real-world evidence from a single center.Clinics (Sao Paulo, Brazil) · 2026Article
- Treatment Persistence in Rheumatoid Arthritis Before and After Etanercept Biosimilar Introduction: A Nationwide Australian Real-World Study.Pharmaceutical medicine · 2025Article
- Real-World Effectiveness and Safety of Infliximab Biosimilar CT-P13 for Rheumatic Diseases: A National Observational Cohort Study (ReFLECT).Advances in therapy · 2025Observational
- Evaluation of rheumatologists' knowledge of biosimilars.Advances in rheumatology (London, England) · 2025Article
- Impact of switching from the originator adalimumab to a biosimilar: a retrospective cohort study.BMC immunology · 2025Article
- Switching from Adalimumab Reference Product to and Among Adalimumab Biosimilars Outside the USA: Insights for US Clinicians.BioDrugs : clinical immunotherapeutics, biopharmaceuticals and gene therapy · 2025Review
- Efficacy, Safety, and Immunogenicity of SDZ-ADL, an Adalimumab Biosimilar, in Biologic-Naïve and Switched Patients with Immune-Mediated Inflammatory Diseases: A Literature Review.Advances in therapy · 2025Review
- Observational
- Switching from rituximab originator to GP2013 or CT-P10 biosimilars in autoimmune rheumatic diseases: drug retention rate and safety data from a multicentric retrospective cohort.Therapeutic advances in musculoskeletal disease · 2024Article
- Real-world experience of rituximab biosimilar GP2013 in rheumatoid arthritis patients naïve to or switched from reference rituximab.Rheumatology international · 2023Observational
- Treatment with adalimumab in patients with chronic inflammatory rheumatic diseases: a study of treatment trajectories on a patient level in routine care.Therapeutic advances in musculoskeletal disease · 2023Article
- TNF-alpha inhibitors biosimilar use in France: a nationwide population-based study using the French National Health Data System.Scientific reports · 2022Article
- Differential retention of adalimumab and etanercept biosimilars compared to originator treatments: Results of a retrospective French multicenter study.Frontiers in medicine · 2022Article
- Drug utilization and medication adherence for the treatment of psoriatic arthritis: an Italian study.Global & regional health technology assessmentArticle
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
9 authors at 4 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectivesTo compare treatment retention between biosimilars and their originator products among first starters (etanercept, infliximab, adalimumab and rituximab), as well as after non-medical switch.
methodsPatients with rheumatic diseases starting, for the first time, an originator or biosimilar etanercept, infliximab, adalimumab or rituximab were identified in the national Swedish Rheumatology Quality Register. Moreover, patients switching from an originator to its biosimilar were identified and individually matched to patients continuing on the originator. One-year treatment retention was calculated and hazard ratios (HR) for discontinuation with 95% CIs were estimated, adjusting for comorbidities and socio-economic factors.
resultsIn total, 21 443 first treatment courses were identified. The proportion of patients still on the drug at 1 year and the HR for discontinuation revealed no differences across adalimumab (Humira, Imraldi, Amgevita and Hyrimoz) nor across rituximab products (Mabthera, Ritemvia/Truxima and Rixathon). The proportions on the drug at 1 year were similar for Benepali (77%) and Enbrel (75%) and the adjusted HR for Benepali compared with Enbrel was 0.91 (95% CI 0.83, 0.99). For infliximab, the proportion still on the drug at 1 year was 67% for Remicade and 66% for Remsima/Inflectra and the HR compared with Remicade was 1.16 (95% CI 1.02, 1.33). Among 2925 patients switching from an originator drug to one of its biosimilars, we noted no statistically significant or clinically relevant differences in drug survival compared with those who remained on originator therapy.
conclusionThis large observational study supports the equivalence of biologic DMARD biosimilar products and originators when used in routine rheumatology care.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.