- ICH GCP
- Registro degli studi clinici negli Stati Uniti
- Sperimentazione clinica NCT07582276
A Prospective Assessment of Bone Health in Patients With Severe Hemophilia A on Factor VIII vs Factor Mimetic Prophylaxis (Efa Emi Bone Health Study)
A Multi-institution Prospective Assessment of Bone Health in Patients With Severe Hemophilia A on Factor VIII vs Factor Mimetic Prophylaxis (Efa Emi Bone Health Study)
Panoramica dello studio
Stato
Condizioni
Descrizione dettagliata
Reduced bone mineral density, osteoporosis, and fractures are increasingly recognized in persons with severe hemophilia A. The mechanisms underlying impaired bone health in hemophilia are multifactorial and may include reduced physical activity, chronic joint disease, inflammation, and abnormalities in coagulation-related pathways involved in bone remodeling.
Thrombin has been shown to play an important role in bone metabolism through activation of protease-activated receptor-1 (PAR-1) signaling pathways that influence osteoblast and osteoclast activity. Reduced thrombin generation in severe hemophilia A may contribute to decreased bone formation and increased bone resorption.
Efanesoctocog alfa is an extended half-life factor VIII replacement therapy that maintains higher circulating factor VIII levels and supports thrombin generation. Emicizumab is a non-factor prophylactic therapy that effectively prevents bleeding but does not replace factor VIII. The comparative effects of these therapies on long term bone health have not been well established.
This prospective observational study will compare longitudinal changes in bone mineral density among patients with severe hemophilia A receiving prophylaxis with emicizumab or efanesoctocog alfa over 5 years. Participants will undergo serial dual-energy X-ray absorptiometry (DXA) assessments and evaluation of bone remodeling biomarkers, inflammatory cytokines, thrombin generation, plasmin generation, and joint health over a five-year period.
Tipo di studio
Iscrizione (Stimato)
Contatti e Sedi
Contatto studio
- Nome: Carol D Pierce, RN
- Numero di telefono: 501-364-4440
- Email: piercecarold@uams.edu
Criteri di partecipazione
Criteri di ammissibilità
Età idonea allo studio
- Adulto
Accetta volontari sani
Metodo di campionamento
Popolazione di studio
Descrizione
Inclusion Criteria:
- The participant or legally authorized representative is willing and able to provide written informed consent.
- Diagnosis of severe hemophilia A (factor VIII activity < 1%).
- Male sex.
- Age between 30 and 50 years (inclusive).
- BMI between 18.5 and 40 kg/m2
- The participant must have been on prophylaxis with Efanesoctocog alfa or Emicizumab for at least 3 months prior to enrollment and intend to remain on the current regimen for the next 5 years.
- Willingness to undergo all research procedures, including DEXA scans and the collection of blood samples.
- Willingness to complete all standard-of-care bleeding and treatment logs.
Exclusion Criteria:
- Unwillingness of the participant, parent, or legally authorized representative to provide informed consent.
- Diagnosis of a bleeding disorder other than or in addition to severe hemophilia A.
- Active Factor VIII inhibitors at the time of enrollment
- History of a disease known to influence bone metabolism unrelated to a bleeding disorder. (Examples: Paget's disease, osteogenesis imperfecta, Ehlers Danlos syndrome, Hyperparathyroidism)
- Past or present treatment with any anti-osteoporotic medication, excluding oral vitamin D or oral calcium supplements.
- Documented HIV infection or HCV infection (whether in progress or cured) at the cirrhotic stage.
- Presence of a non-removable metal device that would interfere with research procedures.
- Inability to tolerate a DEXA scan due to limited range of motion or body habitus.
- History of bone fractures or surgical repair within 8 weeks prior to enrollment.
- Participants with weight >300 pounds, due to limitations of DEXA scanner
Piano di studio
Come è strutturato lo studio?
Dettagli di progettazione
Coorti e interventi
Gruppo / Coorte |
|---|
|
Patients with Severe Hemophilia A on Efanesoctocog alfa prophylaxis
Participants with severe hemophilia A receiving prophylaxis with efanesoctocog alfa as part of routine clinical care.
Participants will undergo longitudinal assessments of bone mineral density, bone remodeling biomarkers, thrombin generation, plasmin generation, and joint health over a five-year period.
|
|
Patients with Severe Hemophilia A on Emicizumab prophylaxis
Participants with severe hemophilia A receiving prophylaxis with emicizumab as part of routine clinical care.
Participants will undergo longitudinal assessments of bone mineral density, bone remodeling biomarkers, thrombin generation, plasmin generation, and joint health over a five-year period.
|
Cosa sta misurando lo studio?
Misure di risultato primarie
Misura del risultato |
Misura Descrizione |
Lasso di tempo |
|---|---|---|
|
Longitudinal change in femoral neck bone mineral density (g/cm²)
Lasso di tempo: Baseline and annually through 5 years.
|
Bone mineral densitometry
|
Baseline and annually through 5 years.
|
Misure di risultato secondarie
Misura del risultato |
Misura Descrizione |
Lasso di tempo |
|---|---|---|
|
Longitudinal change in Lumbar spine (L1-L4) bone mineral density (g/cm²)
Lasso di tempo: Baseline and annually through 5 years.
|
Bone mineral densitometry
|
Baseline and annually through 5 years.
|
|
Longitudinal change in total hip bone mineral density (g/cm²)
Lasso di tempo: Baseline and annually through 5 years.
|
Bone mineral densitometry
|
Baseline and annually through 5 years.
|
|
Longitudinal Change in Bone Remodeling Biomarkers and Cytokines
Lasso di tempo: Baseline and annually through 5 years.
|
PINP, CTX-I, OPG, RANKL, IL-1β, IL-6, and TNF-α
|
Baseline and annually through 5 years.
|
|
Change in Thrombin Generation and Plasmin Generation Parameters
Lasso di tempo: Baseline and annually through 5 years
|
Simultaneous Thrombin and Plasmin Generation Assay
|
Baseline and annually through 5 years
|
Collaboratori e investigatori
Collaboratori
Investigatori
- Investigatore principale: Divyaswathi Citla Sridhar, MD, Arkansas Children's Reserach Institute
Pubblicazioni e link utili
Pubblicazioni generali
- Paschou SA, Anagnostis P, Karras S, Annweiler C, Vakalopoulou S, Garipidou V, Goulis DG. Bone mineral density in men and children with haemophilia A and B: a systematic review and meta-analysis. Osteoporos Int. 2014 Oct;25(10):2399-407. doi: 10.1007/s00198-014-2773-7. Epub 2014 Jul 8.
- Sivagurunathan S, Pagel CN, Loh LH, Wijeyewickrema LC, Pike RN, Mackie EJ. Thrombin inhibits osteoclast differentiation through a non-proteolytic mechanism. J Mol Endocrinol. 2013 Apr 23;50(3):347-59. doi: 10.1530/JME-12-0177. Print 2013 Jun.
- Song SJ, Pagel CN, Campbell TM, Pike RN, Mackie EJ. The role of protease-activated receptor-1 in bone healing. Am J Pathol. 2005 Mar;166(3):857-68. doi: 10.1016/S0002-9440(10)62306-1.
- Pagel CN, Song SJ, Loh LH, Tudor EM, Murray-Rust TA, Pike RN, Mackie EJ. Thrombin-stimulated growth factor and cytokine expression in osteoblasts is mediated by protease-activated receptor-1 and prostanoids. Bone. 2009 May;44(5):813-21. doi: 10.1016/j.bone.2008.12.031. Epub 2009 Jan 15.
- Pagel CN, de Niese MR, Abraham LA, Chinni C, Song SJ, Pike RN, Mackie EJ. Inhibition of osteoblast apoptosis by thrombin. Bone. 2003 Oct;33(4):733-43. doi: 10.1016/s8756-3282(03)00209-6.
- Al Dieri R, de Laat B, Hemker HC. Thrombin generation: what have we learned? Blood Rev. 2012 Sep;26(5):197-203. doi: 10.1016/j.blre.2012.06.001. Epub 2012 Jul 2.
- Goldscheitter G, Recht M, Sochacki P, Manco-Johnson M, Taylor JA. Biomarkers of bone disease in persons with haemophilia. Haemophilia. 2021 Jan;27(1):149-155. doi: 10.1111/hae.13986. Epub 2020 Aug 27.
- Gerstner G, Damiano ML, Tom A, Worman C, Schultz W, Recht M, Stopeck AT. Prevalence and risk factors associated with decreased bone mineral density in patients with haemophilia. Haemophilia. 2009 Mar;15(2):559-65. doi: 10.1111/j.1365-2516.2008.01963.x. Epub 2009 Feb 1.
- Wallny TA, Scholz DT, Oldenburg J, Nicolay C, Ezziddin S, Pennekamp PH, Stoffel-Wagner B, Kraft CN. Osteoporosis in haemophilia - an underestimated comorbidity? Haemophilia. 2007 Jan;13(1):79-84. doi: 10.1111/j.1365-2516.2006.01405.x.
- Ghosh K, Shetty S. Bone health in persons with haemophilia: a review. Eur J Haematol. 2012 Aug;89(2):95-102. doi: 10.1111/j.1600-0609.2012.01803.x. Epub 2012 Jun 22.
- Walker IR, Julian JA. Causes of death in Canadians with haemophilia 1980-1995. Association of Hemophilia Clinic Directors of Canada. Haemophilia. 1998 Sep;4(5):714-20. doi: 10.1046/j.1365-2516.1998.00179.x.
- Smit C, Rosendaal FR, Varekamp I, Brocker-Vriends A, Van Dijck H, Suurmeijer TP, Briet E. Physical condition, longevity, and social performance of Dutch haemophiliacs, 1972-85. BMJ. 1989 Jan 28;298(6668):235-8. doi: 10.1136/bmj.298.6668.235.
- Bunta AD. It is time for everyone to own the bone. Osteoporos Int. 2011 Aug;22 Suppl 3:477-82. doi: 10.1007/s00198-011-1704-0. Epub 2011 Aug 17.
Studiare le date dei record
Studia le date principali
Inizio studio (Stimato)
Completamento primario (Stimato)
Completamento dello studio (Stimato)
Date di iscrizione allo studio
Primo inviato
Primo inviato che soddisfa i criteri di controllo qualità
Primo Inserito (Effettivo)
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
- Malattie genetiche, congenite
- Malattie ematologiche
- Disturbi della coagulazione del sangue
- Disturbi emorragici
- Disturbi della coagulazione del sangue, ereditari
- Disturbi delle proteine della coagulazione
- Malattie e anomalie congenite, ereditarie e neonatali
- Malattie emiche e linfatiche
- Emofilia A
Altri numeri di identificazione dello studio
- 300130
Piano per i dati dei singoli partecipanti (IPD)
Hai intenzione di condividere i dati dei singoli partecipanti (IPD)?
Descrizione del piano 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 .