- ICH GCP
- Registro degli studi clinici negli Stati Uniti
- Sperimentazione clinica NCT01571934
Inhibitor Development in Patients With Hemophilia A Undergoing Surgery (PASs)
Panoramica dello studio
Stato
Condizioni
Descrizione dettagliata
The development of neutralizing anti-factor VIII (fVIII) antibodies, fVIII inhibitor, is the most significant complication affecting patients with hemophilia A (HA). Once an inhibitor develops, treatment is less effective and costly. Although inhibitors occur most commonly in those with severe HA, 25% of new inhibitors occur in those with non-severe HA. In patients with non-severe HA, the development of a fVIII inhibitor can change the course of disease from one that is easily managed to one with the potential for spontaneous life-threatening difficult to treat bleeding. Although significant advances have been made in understanding risk factors for fVIII inhibitor development in patients with severe HA, studies that seek to understand the risk for fVIII inhibitor development in those with non-severe disease have been limited to retrospective analyses. In these retrospective analyses, intensive fVIII treatment and surgery have been identified as risk factors for fVIII inhibitor development in non-severe HA. Additionally, receiving fVIII by continuous infusion has been associated with fVIII inhibitor development in non-severe HA in some but not all studies and may be due in part to a more robust proinflammatory response during continuous infusion. Accordingly, the next logical step to evaluate the risk of inhibitor development associated with continuous fVIII infusion is a prospective observational cohort study. Additionally, knowledge of the immune response to fVIII in the surgical setting is essential for identification of patients at high risk for inhibitor development and development of strategies to prevent inhibitor development and is best evaluated in the setting of an prospective cohort study.
This multicenter prospective observational cohort study will enroll a total of 140 subjects at 10 centers who have mild or moderate hemophilia a (fVIII activity 1-40%) who are scheduled to undergo surgery for which at least 5 consecutive days of fVIII replacement therapy is required. The study will gather clinical data and collect blood specimens on 4 occasions over a 3 month period. Outcomes include: inhibitor development, total fVIII usage, bleeding, and markers of T cell activation.
Tipo di studio
Iscrizione (Effettivo)
Contatti e Sedi
Luoghi di studio
-
-
Colorado
-
Aurora, Colorado, Stati Uniti, 80045
- University of Colorado, Hemophilia and Thrombosis Center
-
-
Georgia
-
Atlanta, Georgia, Stati Uniti, 30322
- Emory University Comprehensive Hemophilia Treatment Center
-
-
Indiana
-
Indianapolis, Indiana, Stati Uniti, 46260
- Indiana Hemophilia and Thrombosis Center
-
-
North Carolina
-
Chapel Hill, North Carolina, Stati Uniti, 27599-7035
- University of North Carolina
-
-
Oregon
-
Portland, Oregon, Stati Uniti, 97239
- Oregon Health & Science University
-
-
Pennsylvania
-
Pittsburgh, Pennsylvania, Stati Uniti, 15213
- University of Pittsburgh and Hemophilia Center of Pennsylvania
-
-
Texas
-
Houston, Texas, Stati Uniti, 77030
- The University of Texas Health Science Center at Houston
-
-
Criteri di partecipazione
Criteri di ammissibilità
Età idonea allo studio
- Bambino
- Adulto
- Adulto più anziano
Accetta volontari sani
Sessi ammissibili allo studio
Metodo di campionamento
Popolazione di studio
Descrizione
Inclusion Criteria:
- Males with mild/moderate hemophilia A (fVIII activity 1-40%)
- Planned surgical intervention which is anticipated to require 5 consecutive days of fVIII replacement therapy (These can be outpatient or inpatient treatment days.)
- Weight >22.5 kg (To assure that volumes of blood to be drawn for study purposes are safe.)
Exclusion Criteria:
- Past history of an inhibitor (inhibitor titer >0.4 BU/ml)
- HIV infection with CD4 count <400/ul
- Currently receiving immunosuppressive medication(s)
- Unable to tolerate quantity of blood to be drawn
- Current or past diagnosis autoimmune disorder
- Current or past diagnosis of immune deficiency disorder other than HIV
Piano di studio
Come è strutturato lo studio?
Dettagli di progettazione
Coorti e interventi
Gruppo / Coorte |
|---|
|
Mild or moderate hemophilia A
Subjects with mild or moderate hemophilia A (fVIII activity 1-40%) who are scheduled to undergo surgery for which at least 5 consecutive days of fVIII replacement therapy is required.
|
Cosa sta misurando lo studio?
Misure di risultato primarie
Misura del risultato |
Misura Descrizione |
Lasso di tempo |
|---|---|---|
|
Inhibitor development (inhibitor titer > 0.4 BU/ml)
Lasso di tempo: postopereratvie date 90
|
Primary Study Endpoint: Inhibitor development (inhibitor titer > 0.4 BU/ml) by post-operative (POD) day 90.
Three months or 90 days was selected as the primary end point based on data collected in the case-control study where 17/18 cases had developed their inhibitor within 12 weeks of their intensive fVIII treatment and only 1 case developed the inhibitor >16 weeks after the intensive fVIII treatment.
|
postopereratvie date 90
|
Collaboratori e investigatori
Sponsor
Investigatori
- Investigatore principale: Christine Kempton, MD, MSc, Emory University
Studiare le date dei record
Studia le date principali
Inizio studio
Completamento primario (Effettivo)
Completamento dello studio (Effettivo)
Date di iscrizione allo studio
Primo inviato
Primo inviato che soddisfa i criteri di controllo qualità
Primo Inserito (Stima)
Aggiornamenti dei record di studio
Ultimo aggiornamento pubblicato (Effettivo)
Ultimo aggiornamento inviato che soddisfa i criteri QC
Ultimo verificato
Maggiori informazioni
Termini relativi a questo studio
Parole chiave
Termini MeSH pertinenti aggiuntivi
Altri numeri di identificazione dello studio
- IRB00046800
- PASS (Other)
- 5K23HL105785 (Sovvenzione/contratto NIH degli Stati Uniti)
Piano per i dati dei singoli partecipanti (IPD)
Hai intenzione di condividere i dati dei singoli partecipanti (IPD)?
Informazioni su farmaci e dispositivi, documenti di studio
Studia un prodotto farmaceutico regolamentato dalla FDA degli Stati Uniti
Studia un dispositivo regolamentato dalla FDA degli Stati Uniti
Queste informazioni sono state recuperate direttamente dal sito web clinicaltrials.gov senza alcuna modifica. In caso di richieste di modifica, rimozione o aggiornamento dei dettagli dello studio, contattare register@clinicaltrials.gov. Non appena verrà implementata una modifica su clinicaltrials.gov, questa verrà aggiornata automaticamente anche sul nostro sito web .