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- Essai clinique 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)
Aperçu de l'étude
Statut
Les conditions
Description détaillée
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.
Type d'étude
Inscription (Estimé)
Contacts et emplacements
Coordonnées de l'étude
- Nom: Carol D Pierce, RN
- Numéro de téléphone: 501-364-4440
- E-mail: piercecarold@uams.edu
Critères de participation
Critère d'éligibilité
Âges éligibles pour étudier
- Adulte
Accepte les volontaires sains
Méthode d'échantillonnage
Population étudiée
La description
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
Plan d'étude
Comment l'étude est-elle conçue ?
Détails de conception
Cohortes et interventions
Groupe / Cohorte |
|---|
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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.
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Que mesure l'étude ?
Principaux critères de jugement
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
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Longitudinal change in femoral neck bone mineral density (g/cm²)
Délai: Baseline and annually through 5 years.
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Bone mineral densitometry
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Baseline and annually through 5 years.
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Mesures de résultats secondaires
Mesure des résultats |
Description de la mesure |
Délai |
|---|---|---|
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Longitudinal change in Lumbar spine (L1-L4) bone mineral density (g/cm²)
Délai: Baseline and annually through 5 years.
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Bone mineral densitometry
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Baseline and annually through 5 years.
|
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Longitudinal change in total hip bone mineral density (g/cm²)
Délai: Baseline and annually through 5 years.
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Bone mineral densitometry
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Baseline and annually through 5 years.
|
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Longitudinal Change in Bone Remodeling Biomarkers and Cytokines
Délai: Baseline and annually through 5 years.
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PINP, CTX-I, OPG, RANKL, IL-1β, IL-6, and TNF-α
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Baseline and annually through 5 years.
|
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Change in Thrombin Generation and Plasmin Generation Parameters
Délai: Baseline and annually through 5 years
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Simultaneous Thrombin and Plasmin Generation Assay
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Baseline and annually through 5 years
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Collaborateurs et enquêteurs
Collaborateurs
Les enquêteurs
- Chercheur principal: Divyaswathi Citla Sridhar, MD, Arkansas Children's Reserach Institute
Publications et liens utiles
Publications générales
- 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.
Dates d'enregistrement des études
Dates principales de l'étude
Début de l'étude (Estimé)
Achèvement primaire (Estimé)
Achèvement de l'étude (Estimé)
Dates d'inscription aux études
Première soumission
Première soumission répondant aux critères de contrôle qualité
Première publication (Réel)
Mises à jour des dossiers d'étude
Dernière mise à jour publiée (Réel)
Dernière mise à jour soumise répondant aux critères de contrôle qualité
Dernière vérification
Plus d'information
Termes liés à cette étude
Mots clés
Termes MeSH pertinents supplémentaires
- Maladies génétiques, innées
- Maladies hématologiques
- Troubles de la coagulation sanguine
- Troubles hémorragiques
- Troubles de la coagulation sanguine, héréditaires
- Troubles des protéines de la coagulation
- Maladies et anomalies congénitales, héréditaires et néonatales
- Maladies hémiques et lymphatiques
- Hémophilie A
Autres numéros d'identification d'étude
- 300130
Plan pour les données individuelles des participants (IPD)
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Description du régime IPD
Informations sur les médicaments et les dispositifs, documents d'étude
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