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Kedra J, Dieudé P, Giboin C, Marotte H, Salliot C, Schaeverbeke T, Perdriger A, Soubrier M, Morel J, Constantin A, Dernis E, Royant V, Salmon JH, Pham T, Gottenberg JE, Pertuiset E, Dougados M, Devauchelle-Pensec V, Gaudin P, Cormier G, Goupille P, Mariette X, Berenbaum F, Alcaix D, Rouidi SA, Berthelot JM, Monnier A, Piroth C, Lioté F, Goëb V, Gaujoux-Viala C, Chary-Valckenaere I, Hajage D, Tubach F, Fautrel B. Towards the Lowest Efficacious Dose: Results From a Multicenter Noninferiority Randomized Open-Label Controlled Trial Assessing Tocilizumab or Abatacept Injection Spacing in Rheumatoid Arthritis in Remission. Arthritis Rheumatol 2024; 76:541-552. [PMID: 37942714 DOI: 10.1002/art.42752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 10/18/2023] [Accepted: 11/07/2023] [Indexed: 11/10/2023]
Abstract
OBJECTIVE We assess the clinical and structural impact at two years of progressively spacing tocilizumab (TCZ) or abatacept (ABA) injections versus maintenance at full dose in patients with rheumatoid arthritis in sustained remission. METHODS This multicenter open-label noninferiority (NI) randomized clinical trial included patients with established rheumatoid arthritis in sustained remission receiving ABA or TCZ at a stable dose. Patients were randomized to treatment maintenance (M) at full dose (M-arm) or progressive injection spacing (S) driven by the Disease Activity Score in 28 joints every 3 months up to biologics discontinuation (S-arm). The primary end point was the evolution of disease activity according to the Disease Activity Score in 44 joints during the 2-year follow-up analyzed per protocol with a linear mixed-effects model, evaluated by an NI test based on the one-sided 95% confidence interval (95% CI) of the slope difference (NI margin 0.25). Other end points were flare incidence and structural damage progression. RESULTS Overall, 202 of the 233 patients included were considered for per protocol analysis (90 in S-arm and 112 in M-arm). At the end of follow-up, 16.2% of the patients in the S-arm could discontinue their biologic disease-modifying antirheumatic drug, 46.9% tapered the dose and 36.9% returned to a full dose. NI was not demonstrated for the primary outcome, with a slope difference of 0.10 (95% CI 0.10-0.31) between the two arms. NI was not demonstrated for flare incidence (difference 42.6%, 95% CI 30.0-55.1) or rate of structural damage progression at two years (difference 13.9%, 95% CI -6.7 to 34.4). CONCLUSION The Towards the Lowest Efficacious Dose trial failed to demonstrate NI for the proposed ABA or TCZ tapering strategy.
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Affiliation(s)
- Joanna Kedra
- Sorbonne Université, INSERM, Institut Pierre Louis d'Epidémiologie et de Santé Publique, AP-HP, Hôpital Pitié Salpêtrière, Paris, France
| | - Philippe Dieudé
- Université de Paris Cité, INSERM UMR 1152 and Hôpital Bichat-Claude Bernard, AP-HP, Paris, France
| | - Caroline Giboin
- Sorbonne Université, INSERM, Institut Pierre Louis d'Epidémiologie et de Santé Publique, AP-HP, Hôpital Pitié Salpêtrière, Paris, France
| | - Hubert Marotte
- Université Jean Monnet Saint-Étienne, Centre Hospitalier Universitaire de Saint-Etienne, Mines Saint-Etienne, INSERM, SAINBIOSE U1059, Saint-Étienne, France
| | | | | | | | - Martin Soubrier
- Clermont-Ferrand University Hospital, Clermont-Ferrand, France
| | - Jacques Morel
- Montpellier University Hospital and University of Montpellier, INSRM, CNRS, Montpellier, France
| | - Arnaud Constantin
- Pierre-Paul Riquet University Hospital, Toulouse III - Paul Sabatier University, and INSERM UMR 1291, Purpan University Hospital, Toulouse, France
| | | | | | - Jean-Hugues Salmon
- University of Reims Champagne-Ardenne, Faculty of Medicine, UR 3797 and Maison Blanche Hospital, Reims University Hospitals, Reims, France
| | - Thao Pham
- Sainte-Marguerite Hospital, Assistance Publique - Hôpitaux de Marseille, Marseille, France
| | | | | | - Maxime Dougados
- University of Paris, Hôpital Cochin. AP-HP, INSERM U1153, pôle de recherche et d'enseignement supérieur Sorbonne Paris-Cité, Paris, France
| | | | | | | | | | - Xavier Mariette
- Université Paris-Saclay, Hôpital Bicêtre, AP-HP, INSERM UMR1184, Le Kremlin Bicêtre, France
| | - Francis Berenbaum
- Sorbonne University-INSERM Centre De Recherche scientifique Saint-Antoine, AP-HP Saint-Antoine Hospital, Paris, France
| | | | | | | | | | | | - Frédéric Lioté
- Université de Paris and INSERM UMR1132 Bioscar (Centre Viggo Petersen), Hôpital Lariboisière, AP-HP, Paris, France
| | - Vincent Goëb
- University Hospital of Amiens, Université de Picardie Jules Verne, Amiens, France
| | - Cécile Gaujoux-Viala
- Institut Pierre Louis d'Epidémiologie et de Santé Publique, University of Montpellier, INSERM, Centre Hospitalier Universitaire de Nîmes, Montpellier, France
| | | | - David Hajage
- Sorbonne Université, INSERM, Institut Pierre Louis d'Epidémiologie et de Santé Publique, AP-HP, Hôpital Pitié Salpêtrière, Paris, France
| | - Florence Tubach
- Sorbonne Université, INSERM, Institut Pierre Louis d'Epidémiologie et de Santé Publique, AP-HP, Hôpital Pitié Salpêtrière, Paris, France
| | - Bruno Fautrel
- Sorbonne Université, INSERM, Institut Pierre Louis d'Epidémiologie et de Santé Publique, AP-HP, Hôpital Pitié Salpêtrière, Paris, France
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