The efficacy and safety of caplacizumab in individuals with acquired thrombotic thrombocytopenic purpura (aTTP) have been established in the phase 2 TITAN and phase 3 HERCULES trials. Integrated analysis of data from both trials was conducted to increase statistical power for assessing treatment differences in efficacy and safety outcomes. Caplacizumab was associated with a significant reduction in the number of deaths (0 vs 4; P, .05) and a significantly lower incidence of refractory TTP (0 vs 8; P, .05) vs placebo during the treatment period. Consistent with the individual trials, treatment with caplacizumab resulted in a faster time to platelet count response (hazard ratio, 1.65; P, .001), a 72.6% reduction in the proportion of patients with the composite end point of TTP-related death, TTP exacerbation, or occurrence of at least 1 treatment-emergent major thromboembolic event during the treatment period (13.0% vs 47.3%; P, .001), and a 33.3% reduction in the median number of therapeutic plasma exchange days (5.0 vs 7.5 days) vs placebo. No new safety signals were identified; mild mucocutaneous bleeding was the main safety finding. This integrated analysis provided new evidence that caplacizumab prevents mortality and refractory disease in acquired TTP and strengthened individual trial findings, with a confirmed favorable safety and tolerability profile. These trials were registered at www.clinicaltrials.gov as #NCT01151423 and #NCT02553317.
Caplacizumab prevents refractoriness and mortality in acquired thrombotic thrombocytopenic purpura : Integrated analysis / F. Peyvandi, S. Cataland, M. Scully, P. Coppo, P. Knoebl, J.A. Kremer Hovinga, A. Metjian, J. de la Rubia, K. Pavenski, J.M. Mi Edou, H. de Winter, F. Callewaert. - In: BLOOD ADVANCES. - ISSN 2473-9529. - 5:8(2021 Apr), pp. 2137-2141. [10.1182/BLOODADVANCES.2020001834]
|Titolo:||Caplacizumab prevents refractoriness and mortality in acquired thrombotic thrombocytopenic purpura : Integrated analysis|
|Parole Chiave:||fibrinolytic agents; humans; plasma exchange; purpura, thrombotic thrombocytopenic; single-domain antibodies|
|Settore Scientifico Disciplinare:||Settore MED/09 - Medicina Interna|
|Data di pubblicazione:||apr-2021|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1182/BLOODADVANCES.2020001834|
|Appare nelle tipologie:||01 - Articolo su periodico|