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Vol. 43. Núm. S1.
Páginas S232-S233 (Outubro 2021)
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Vol. 43. Núm. S1.
Páginas S232-S233 (Outubro 2021)
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RESULTS FROM A 52-WEEK, NONINTERVENTIONAL STUDY OF BRAZILIAN INDIVIDUALS WITH SEVERE HAEMOPHILIA A RECEIVING PROPHYLAXIS: RATES OF BLEEDING, FVIII USE, AND QUALITY OF LIFE
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GG Yamaguti-Hayakawaa, PR Villaçab, C Lorenzatoc, MH Cerqueirad, LCO Oliveirae, ACKVD Nascimentof, CBF Damettog, DB Reddyh, H Yuh, MC Ozeloa
a Centro de Hematologia e Hemoterapia (Hemocentro), Universidade Estadual de Campinas (UNICAMP), Campinas, SP, Brazil
b Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo (HCFMUSP), São Paulo, SP, Brazil
c Centro de Hematologia e Hemoterapia do Paraná (HEMEPAR), Curitiba, PR, Brazil
d Instituto Estadual de Hematologia Arthur de Siqueira Cavalcanti (Hemorio), Rio de Janeiro, RJ, Brazil
e Fundação Hemocentro de Ribeirão Preto (FUNDHERP), Faculdade de Medicina de Ribeirão Preto (FMRP), Universidade de São Paulo (USP), Ribeirão Preto, SP, Brazil
f Servico de Hematologia, Irmandade da Santa Casa de Misericórdia de São Paulo, São Paulo, SP, Brazil
g Hemocentro do Estado do Rio Grande do Sul (HEMORGS), Porto Alegre, RS, Brazil
h BioMarin Pharmaceutical Inc., Novato, United States
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Vol. 43. Núm S1
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Regular prophylaxis with exogenous Factor VIII (FVIII) is recommended for individuals with severe haemophilia A (HA), but standardised data on bleeding, FVIII use, and quality of life (QoL) for this population in routine clinical practice are scarce. In a prospective, multinational, noninterventional study, male participants age ≥18 years with severe HA (FVIII ≤1 IU/dL) receiving prophylactic FVIII were followed for at least 6 months. Bleeding and FVIII use were reported weekly. Annualised bleeding rate (ABR) and FVIII infusion rate were calculated for participants with ≥6 months follow-up and combined with retrospective data from 6 months prior to baseline. Adverse events (AEs) were collected monthly. Participants completed the haemophilia-specific health-related QoL questionnaire for adults (Haemo-QoL-A) at baseline. This abstract presents a sub analysis of the study's Brazilian population. For all 54 Brazilian participants, median (range) age was 27 (18–47) years. For the 41 (76%) Brazilian participants with ≥6 months follow-up, mean (standard deviation [SD]; median) ABR for treated bleeds was 2.42 (4.05; 0.80) bleeds per year and mean (SD; median) annualised FVIII infusion rate was 167.87 (60.22; 155.17) infusions per year. Mean (SD; median) ABRs of treated traumatic, spontaneous, and joint bleeds were 0.90 (1.6; 0.0), 1.52 (3.3; 0.0), and 1.91 (3.29; 0.0) bleeds per year, respectively. Median (range) percentage of follow-up time adherent with prescribed prophylaxis frequency in Brazilian participants was 94.7%(49%-100%). Mean (SD) Haemo-QoL-A total transformed score (0–100) score was 70.3 (15.1) The lowest mean (SD) domain scores (representing lower QoL) in all Brazilian participants were for treatment concern 45.7 (30.85), physical functioning 66.9 (21.33), and consequences of bleeding 68.1 (22.92). AEs were reported in 22 (40.7%) participants, with the most common AEs being haemophilic arthropathy, nasopharyngitis, and synovitis, each reported in 2 (3.7%) Brazilian participants. Two serious AEs (oesophageal haemorrhage and haematoma) were reported, each by single participant (1.9%). Despite high prophylaxis adherence, participants reported breakthrough spontaneous and joint bleeding and impaired physical functioning. Additional haemostatic options for severe HA are needed.

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Hematology, Transfusion and Cell Therapy
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