Hemophilia Inhibitor Genetics Study (HIGS)
Panoramica dello studio
Stato
Stato
Condizioni
Condizioni
Intervento / Trattamento
Intervento / Trattamento
Descrizione dettagliata
Tipo di studio
Tipo di studio
Iscrizione (Effettivo)
Iscrizione
Contatti e Sedi
Luoghi di studio
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Malmo, Svezia, SE-205 02
- Malmö University Hospital
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Criteri di partecipazione
Criteri di ammissibilità
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:
- Severe hemophilia A is defined as a baseline factor VIII level <1%. A history of inhibitor is defined as ever having a Bethesda titer > 1 BU.
Phase I.
Subjects with hemophilia are eligible for Phase I of the study if all of the following apply:
- An informed consent form, approved by the appropriate IRB/IEC, has been administered, signed, and dated.
- The subject has severe hemophilia A.
- The subject has a history of inhibitor or the subject has no history of inhibitor but has at least 100 exposure days to factor VIII products.
- Sufficient documentation exists to identify the subject's maximum lifetime Bethesda titer.
- The subject has a history of inhibitor and has one or more full brothers with severe hemophilia A, with or without an inhibitor, who are eligible for and have agreed to be in the study, and two parents who have agreed to be in the study or the subject does not have a history of inhibitor but has one or more full brothers with severe hemophilia A and a history of inhibitor who are eligible for and have agreed to be in the study, and two parents who have agreed to be in the study.
Subjects without hemophilia are eligible for Phase I of the study if all of the following apply:
- An informed consent form, approved by the appropriate IRB/IEC, has been administered, signed, and dated.
- The subject is the parent (mother or father) of, or the full sibling of, a subject with hemophilia who is eligible for Phase I of the study.
Phase II.
Subjects with hemophilia are eligible for Phase II of the study if all of the following apply:
- An informed consent form, approved by the appropriate IRB/IEC, has been administered, signed, and dated.
- The subject has severe hemophilia A.
- The subject has a history of inhibitor and two parents who have agreed to be in the study.
- Sufficient documentation exists to identify the subject's maximum lifetime Bethesda titer.
Subjects without hemophilia are eligible for Phase II of the study if all of the following apply:
- An informed consent form, approved by the appropriate IRB/IEC, has been administered, signed, and dated.
- The subject is the parent (mother or father) of a subject with hemophilia who is eligible for Phase II of the study.
Exclusion Criteria:
Phase I.
Subjects (with or without hemophilia) are excluded from participation in Phase I if:
- The minimum family group, defined as a pair of full brothers with hemophilia, either concordant (both with) or discordant (one with, one without) for inhibitor, and both of their parents, is not enrolled.
Phase II.
Subjects are excluded from participation in Phase II if:
- The minimum family group, defined as a person with hemophilia and a history of inhibitor and his mother and father, is not enrolled.
Piano di studio
Come è strutturato lo studio?
Dettagli di progettazione
Numero di gruppi/coorti
Coorti e interventi
Gruppo / CoorteGruppo / Coorte |
Intervento / TrattamentoIntervento / Trattamento |
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Phase I, II, III
Phase I consists of a brother pair with hemophilia, one or both of whom has a history of inhibitors, and their parents; Phase II consists of a person with hemophilia and an inhibitor, and both his parents; Phase III consists of an unrelated group of people with hemophilia.
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A single blood draw.
Altri nomi:
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Cosa sta misurando lo studio?
Misure di risultato primarie
Misure di risultato primarie
Misura del risultato |
Lasso di tempo |
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development of inhibitory antibodies to factor VIII
Lasso di tempo: upon development of inhibitor or following at least 100 exposure days to factor VIII
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upon development of inhibitor or following at least 100 exposure days to factor VIII
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Collaboratori e investigatori
Sponsor
Sponsor
Investigatori
Investigatori
- Investigatore principale: Erik Berntorp, MD, PhD, Skane University Hospital
Pubblicazioni e link utili
Pubblicazioni generali
- Berntorp E, Astermark J, Donfield SM, Nelson GW, Oldenburg J, Shapiro AD, Dimichele DM, Ewenstein BM, Gomperts ED, Winkler CA; Hemophilia Inhibitor Genetics Study. Haemophilia Inhibitor Genetics Study - evaluation of a model for studies of complex diseases using linkage and association methods. Haemophilia. 2005 Jul;11(4):427-9. doi: 10.1111/j.1365-2516.2005.01119.x. No abstract available.
- Astermark J, Donfield SM, Gomperts ED, Schwarz J, Menius ED, Pavlova A, Oldenburg J, Kessing B, DiMichele DM, Shapiro AD, Winkler CA, Berntorp E; Hemophilia Inhibitor Genetics Study (HIGS) Combined Cohort. The polygenic nature of inhibitors in hemophilia A: results from the Hemophilia Inhibitor Genetics Study (HIGS) Combined Cohort. Blood. 2013 Feb 21;121(8):1446-54. doi: 10.1182/blood-2012-06-434803. Epub 2012 Dec 6.
- Schwarz J, Astermark J, Menius ED, Carrington M, Donfield SM, Gomperts ED, Nelson GW, Oldenburg J, Pavlova A, Shapiro AD, Winkler CA, Berntorp E; Hemophilia Inhibitor Genetics Study Combined Cohort. F8 haplotype and inhibitor risk: results from the Hemophilia Inhibitor Genetics Study (HIGS) Combined Cohort. Haemophilia. 2013 Jan;19(1):113-8. doi: 10.1111/hae.12004. Epub 2012 Sep 7.
Studiare le date dei record
Studia le date principali
Inizio studio
Inizio studio
Completamento primario (Effettivo)
Completamento primario
Completamento dello studio (Effettivo)
Completamento dello studio
Date di iscrizione allo studio
Primo inviato
Primo inviato
Primo inviato che soddisfa i criteri di controllo qualità
Primo inviato che soddisfa i criteri di controllo qualità
Primo Inserito (Stima)
Primo Inserito
Aggiornamenti dei record di studio
Ultimo aggiornamento pubblicato (Stima)
Ultimo aggiornamento pubblicato
Ultimo aggiornamento inviato che soddisfa i criteri QC
Ultimo aggiornamento inviato che soddisfa i criteri QC
Ultimo verificato
Ultimo verificato
Maggiori informazioni
Termini relativi a questo studio
Termini MeSH pertinenti aggiuntivi
Altri numeri di identificazione dello studio
Altri numeri di identificazione dello studio
- HIGS
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