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Clinical Study to Investigate the PK, Efficacy, and Safety of Wilate in Patients With Severe Hemophilia A

21 de dezembro de 2020 atualizado por: Octapharma

Clinical Study to Investigate the Pharmacokinetics, Efficacy, Safety, and Immunogenicity of Wilate in Previously Treated Patients With Severe Hemophilia A

The purpose of this study is to obtain additional data on the safety and efficacy of Wilate in PTPs with hemophilia A with at least 150 previous exposure days (EDs) to a FVIII concentrate who undergo prophylactic treatment with Wilate for 6 months and at least 50 EDs, thus supplementing the existing database to obtain approval of Wilate for the indication hemophilia A in the USA.

Visão geral do estudo

Status

Concluído

Condições

Intervenção / Tratamento

Tipo de estudo

Intervencional

Inscrição (Real)

57

Estágio

  • Fase 3

Contactos e Locais

Esta seção fornece os detalhes de contato para aqueles que conduzem o estudo e informações sobre onde este estudo está sendo realizado.

Locais de estudo

  • Bulgária
      • Sofia, Bulgária
        • Specialized Hospital for Active Treatment "Joan Pavel"
  • Federação Russa
      • Barnaul, Federação Russa
        • Barnaul Branch of RAMS hematology center
      • Moscow, Federação Russa
        • Federal Scientific Hematology Center
  • Hungria
      • Budapest, Hungria
        • National Haemophilia Centre
  • Polônia
      • Krakow, Polônia
        • Krakowskie Centrum Medyczne
      • Rzeszow, Polônia
        • Korczowski Bartosz Gabinet Lekarski
  • Romênia
      • Bucharest, Romênia
        • Centrul Medical Unirea -Policlinica Enescu

Critérios de participação

Os pesquisadores procuram pessoas que se encaixem em uma determinada descrição, chamada de critérios de elegibilidade. Alguns exemplos desses critérios são a condição geral de saúde de uma pessoa ou tratamentos anteriores.

Critérios de elegibilidade

Idades elegíveis para estudo

12 anos e mais velhos (Filho, Adulto, Adulto mais velho)

Aceita Voluntários Saudáveis

Não

Gêneros Elegíveis para o Estudo

Macho

Descrição

Inclusion Criteria:

  1. Severe hemophilia A (<1% FVIII:C) according to medical history
  2. Male patients aged ≥12 years
  3. Previous treatment with a FVIII concentrate for at least 150 exposure days (EDs)
  4. Immunocompetence (CD4+ count >200/µL)
  5. Good documentation of the historical bleeding rate (at least for the 6 months preceding study start)
  6. Voluntarily given, fully informed written and signed consent obtained by the patient (or parent/legal guardian in case of adolescents) before any study-related procedures are conducted

Whenever possible, the interval between the Screening Visit and the PK or Non-PK Visit should not exceed 30 days. If the 30-day interval is exceeded, determination of the CD4+ count is to be repeated and must be >200/µL for patients to be enrolled (i.e., exclusion criterion no. 4).

Exclusion Criteria:

  1. Any coagulation disorders other than hemophilia A
  2. History of FVIII inhibitor activity (≥0.6 BU) or detectable FVIII inhibitory anti-bodies (≥0.6 BU using the Nijmegen modification of the Bethesda assay) at screening, as determined by the central laboratory
  3. Severe liver or kidney diseases (alanine aminotransferase [ALAT] and aspartate transaminase [ASAT] levels >5 times of upper limit of normal, creatinine>120 µmol/L)
  4. Patients receiving or scheduled to receive immunomodulating drugs (other than anti-retroviral chemotherapy) such as alpha-interferon, prednisone (equivalent to >10 mg/day), or similar drugs
  5. Treatment with any investigational medicinal product in another interventional clinical study currently or within 4 weeks before enrollment

Plano de estudo

Esta seção fornece detalhes do plano de estudo, incluindo como o estudo é projetado e o que o estudo está medindo.

Como o estudo é projetado?

Detalhes do projeto

  • Finalidade Principal: Tratamento
  • Alocação: N / D
  • Modelo Intervencional: Atribuição de grupo único
  • Mascaramento: Nenhum (rótulo aberto)

Armas e Intervenções

Grupo de Participantes / Braço
Intervenção / Tratamento
Experimental: All patients
All patients will receive Wilate for prophylactic treatment
Medicamento: Wilate
Outros nomes:
  • Fator de von Willebrand / Fator VIII (derivado do plasma)

O que o estudo está medindo?

Medidas de resultados primários

Medida de resultado
Descrição da medida
Prazo
Total Annualized Bleeding Rate (TABR)
Prazo: 6 months
The total number of bleeding events (BEs) was documented by patients in a patient diary (together with the investigator in case of on-site treatments), which was reviewed at each follow-up visit by site personnel.
6 months

Medidas de resultados secundários

Medida de resultado
Descrição da medida
Prazo
Spontaneous Annualized Bleeding Rate (SABR)
Prazo: 6 months
The number of spontaneous bleeding events (BEs) was documented by patients in a patient diary (together with the investigator in case of on-site treatments), which was reviewed at each follow-up visit by site personnel.
6 months
Efficacy of Wilate in the Treatment of Breakthrough BEs
Prazo: 6 months
The proportion of BEs successfully treated with Wilate were documented by the patient (together with the investigator in case of on-site treatments) in the patient diary for all BEs according to a 4-point hemostatic efficacy scale including the four items: 'excellent,' 'good,' moderate,' and 'none', where 'excellent' was defined as "Abrupt pain relief and/or unequivocal improvement in objective signs of bleeding within approximately 8 hours after a single injection" (best outcome) and 'none' was defined as "No improvement within 12 hours, or worsening of symptoms, requiring more than two injections for complete resolution" (worst outcome). All efficacy ratings assessed as either 'excellent' or 'good' were considered 'successfully treated.'
6 months
Wilate Consumption Data (Average Total Normdose of FVIII IU/kg Per Month of Study) for Prophylaxis
Prazo: 6 months
The average consumption of Wilate per month of study (IU/kg) for all patients receiving prophylaxis.
6 months
Pharmacokinetic (PK) Assessment (Area Under the Curve [AUC] Norm) of FVIII:C
Prazo: Initial PK visit (Day -1) and PK study completion visit (6 months); data collected 1 h prior to injection and 15 min, 1 h, 3 h, 6 h, 9 h, 24 h, 30 h and 48 h after the end of injection
PK assessments of FVIII:C were conducted using the one-stage (OS) assay. The value of the AUCnorm of FVIII:C was calculated based on the FVIII:C values measured in the patients participating in the PK study.
Initial PK visit (Day -1) and PK study completion visit (6 months); data collected 1 h prior to injection and 15 min, 1 h, 3 h, 6 h, 9 h, 24 h, 30 h and 48 h after the end of injection
Pharmacokinetic (PK) Assessment (in Vivo Half-Life (t1/2)) of FVIII:C
Prazo: Initial PK assessment (Day -1) and PK study completion visit (6 months); data collected 1 h prior to infusion and 15 min, 1 h, 3 h, 6 h, 9 h, 24 h, 30 h and 48 h after the end of injection
PK assessments of FVIII:C were conducted using the one-stage (OS) assay. The in vivo half-life of FVIII:C was calculated based on the FVIII:C values measured in the patients participating in the PK study.
Initial PK assessment (Day -1) and PK study completion visit (6 months); data collected 1 h prior to infusion and 15 min, 1 h, 3 h, 6 h, 9 h, 24 h, 30 h and 48 h after the end of injection
Pharmacokinetic (PK) Assessment (Maximum Plasma Concentration [Cmax]) of FVIII:C
Prazo: Initial PK assessment (Day -1) and 6 months
PK assessments of FVIII:C were conducted using the one-stage (OS) assay. The maximum plasma concentration of FVIII:C was calculated based on the FVIII:C values measured in the patients participating in the PK study.
Initial PK assessment (Day -1) and 6 months
Incremental in Vivo Recovery (IVR) of Wilate Over Time
Prazo: Baseline, 3 and 6 months
The rise in FVIII activity in IU/dl per unit dose administered in IU/kg was determined from all patients at baseline, 3 and 6 months, using the OS assay.
Baseline, 3 and 6 months
Association Between ABO Blood Type and the FVIII:C Half-life of Wilate (OS Assay)
Prazo: 6 months
Analysis of variance (ANOVA) was used in an exploratory sense to assess an association between ABO blood type and the FVIII:C half-life of Wilate. This was analyzed by calculating the mean square in a one-stage assay.
6 months
Association Between VWF:Ag Concentration and the FVIII:C Half-life of Wilate
Prazo: 6 months
ANOVA was used in an exploratory sense to assess an association between VWF:Ag with the FVIII:C half-life of Wilate. This was analyzed by calculating the mean square in a one-stage assay.
6 months
Safety and Tolerability of Wilate by Monitoring Adverse Events (AEs) Throughout the Study
Prazo: 6 months
At each (scheduled or unscheduled) study visit, AEs were documented by the investigator throughout the study.
6 months
Immunogenicity of Wilate by Testing for FVIII Inhibitors
Prazo: 6 months
FVIII inhibitor activity was determined at each study visit before the injection of Wilate using the modified Bethesda assay (Nijmegen modification).
6 months
Virus Safety Measured by the Number of Parvovirus B19 Seroconversions Between Baseline (BL) and End of Study
Prazo: 6 months
Virus safety was evaluated by taking a plasma sample for parvovirus B19 antibody testing before the first injection of Wilate. All patients negative at screening were tested again at the study completion visit. The number with Parvovirus B19 seroconversions between BL and end of study was recorded.
6 months

Outras medidas de resultado

Medida de resultado
Descrição da medida
Prazo
Efficacy of Wilate in Surgical Prophylaxis
Prazo: 6 months
Hemostatic efficacy was assessed at the end of surgery by the surgeon and at end of the postoperative period by the hematologist, using a 4-point hemostatic efficacy scale including the four items: 'excellent' (best possible outcome), 'good', 'moderate' and 'none' (worst outcome). Overall efficacy was assessed by the investigator, taking both the intra and postoperative assessments into account, and using the 'excellent,' 'good,' moderate,' and 'none' scale.
6 months

Colaboradores e Investigadores

É aqui que você encontrará pessoas e organizações envolvidas com este estudo.

Patrocinador

Octapharma

Datas de registro do estudo

Essas datas acompanham o progresso do registro do estudo e os envios de resumo dos resultados para ClinicalTrials.gov. Os registros do estudo e os resultados relatados são revisados ​​pela National Library of Medicine (NLM) para garantir que atendam aos padrões específicos de controle de qualidade antes de serem publicados no site público.

Datas Principais do Estudo

Início do estudo (Real)

1 de dezembro de 2016

Conclusão Primária (Real)

29 de março de 2018

Conclusão do estudo (Real)

29 de março de 2018

Datas de inscrição no estudo

Enviado pela primeira vez

27 de outubro de 2016

Enviado pela primeira vez que atendeu aos critérios de CQ

1 de novembro de 2016

Primeira postagem (Estimativa)

3 de novembro de 2016

Atualizações de registro de estudo

Última Atualização Postada (Real)

19 de janeiro de 2021

Última atualização enviada que atendeu aos critérios de controle de qualidade

21 de dezembro de 2020

Última verificação

1 de dezembro de 2020

Mais Informações

Termos relacionados a este estudo

Termos MeSH relevantes adicionais

Outros números de identificação do estudo

  • WIL-27

Plano para dados de participantes individuais (IPD)

Planeja compartilhar dados de participantes individuais (IPD)?

NÃO

Informações sobre medicamentos e dispositivos, documentos de estudo

Estuda um medicamento regulamentado pela FDA dos EUA

Sim

Estuda um produto de dispositivo regulamentado pela FDA dos EUA

Não

Essas informações foram obtidas diretamente do site clinicaltrials.gov sem nenhuma alteração. Se você tiver alguma solicitação para alterar, remover ou atualizar os detalhes do seu estudo, entre em contato com register@clinicaltrials.gov. Assim que uma alteração for implementada em clinicaltrials.gov, ela também será atualizada automaticamente em nosso site .

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