Infinitix-BOS Trial: Multi-Center, Randomised, Double-Blind Placebo-Controlled Trial of Nintedanib in Lung Transplant Recipients with Bronchiolitis Obliterans Syndrome (BOS) Grade 0-p and Grade 1-2
2021
Purpose Lung transplantation (TxP) is now a validated treatment of end-stage pulmonary diseases, but long-term survival are still hampered by the development of chronic allograft dysfunction (CLAD) affecting> 50% of patients. Bronchiolitis obliterans syndrome/obliterative bronchiolitis (BOS/OB) is the most common manifestation of CLAD. Survival after onset of BOS is poor ( Methods A phase III clinical randomized trial to assess the efficacy of Nintedanib in LTx recipients with BOS.Inclusion criteria: n=80 LTx recipients with BOS 0p-1-2, with a decline of FEV1> 200ml within the previous year.Primary Objective: to assess Nintedanib efficacy in the reduction of the rate of decline of FEV1 (forced expiratory volume in 1 sec) at a dose of 150 mg twice daily (bid) compared to placebo over 6 months. Secondary Objectives: to assess Nintedanib efficacy and tolerance in the treatment of BOS 0p-1-2, based on the change over 6 months of : 6WT, QOL, BOS grade/graft failure, O2 saturation, KL-6, SPD, VEGF, PDGF parameters, and tolerance. Results The trial was started in December 2019 among 8 french LTx centers (Hopital Foch, Bichat, HEGP/Cochin, Marie-Lannelongue, Marseille, Bordeaux, Strasbourg, and Grenoble), for a total duration of inclusion anticipated at 36 months. On October 15th 2020, 14 patients were already included. Conclusion Infinitix-BOS is the first therapeutic randomized trial testing the efficacy of nintedanib in LTx recipients with BOS. In case of demonstrated effectiveness of Nintedanib, the benefit for LTx patients with BOS seems high in terms of stabilization of lung function and enhancement of survival.
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