BACKGROUND: Fibrinogen concentrate is the preferred choice for fibrinogen replacement in congenital fibrinogen deficiency. This study investigated hemostatic efficacy of a new plasma-derived, double virus-inactivated (using two dedicated virus inactivation/elimination steps) human fibrinogen concentrate for on-demand treatment of bleeding episodes (BEs) and surgical prophylaxis. STUDY DESIGN AND METHODS: In this planned interim analysis of a prospective, multinational Phase III study (NCT02267226), 13 patients with afibrinogenemia (â¥12 years) received fibrinogen concentrate (FIBRYGA, Octapharma AG). Hemostatic efficacy was assessed by investigators and an independent data monitoring and endpoint adjudication committee (IDMEAC) using objective four-point criteria and by thromboelastometry maximum clot firmness (MCF). RESULTS: Fibrinogen concentrate was used on-demand to treat 23 BEs in 11 patients, with 21 (91.3%) requiring a single infusion only. Treatment success was 95.7% (90% confidence interval [CI], 0.81-1.00; assessment missing for one BE) by investigators and 100% (90% CI, 0.88-1.00) by IDMEAC. Mean MCF increased significantly from 0.0 to 6.5 mm (95% CI, 5.65-7.40; p < 0.0001) at 1 hour postinfusion of a median (range) dose of 58.8 (33.9-101.7) mg/kg per BE. Four patients received fibrinogen concentrate as surgical prophylaxis, with intraoperative and postoperative treatment success rated 100% (90% CI, 0.50-1.00) by investigators and IDMEAC (median [range] dose per surgery 93.5 [34.1-225.4] mg/kg). No additional hemostatic interventions were required. No deaths, thromboses, or seroconversions were reported. CONCLUSION: These data showed that the new fibrinogen concentrate was efficacious for on-demand treatment of acute bleeding and surgical prophylaxis in congenital afibrinogenemia patients.
Efficacy and safety of a new human fibrinogen concentrate in patients with congenital fibrinogen deficiency: An interim analysis of a Phase III trial / T. Lissitchkov, B. Madan, C. Djambas Khayat, N. Zozulya, C. Ross, M. Karimi, K. Kavakli, G.R. De Angulo, A. Almomen, B.A. Schwartz, C. Solomon, S. Knaub, F. Peyvandi. - In: TRANSFUSION. - ISSN 0041-1132. - 58:2(2018 Feb), pp. 413-422.
|Titolo:||Efficacy and safety of a new human fibrinogen concentrate in patients with congenital fibrinogen deficiency: An interim analysis of a Phase III trial|
PAYVANDI, FLORA (Ultimo)
|Parole Chiave:||immunology and allergy; immunology; hematology|
|Settore Scientifico Disciplinare:||Settore MED/09 - Medicina Interna|
|Data di pubblicazione:||feb-2018|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1111/trf.14421|
|Appare nelle tipologie:||01 - Articolo su periodico|