Brief Title
Haemophilia and Bone Loss - PHILEOS Study
Official Title
Haemophilia and Bone Loss PHILEOS Study
Brief Summary
Haemophilia is a rare bleeding disorder, characterized by factor VIII (HA) or factor IX (HB) deficiency. The absence or the reduction of fVIII or fIX result in impaired thrombin generation and clot formation, causing excessive bleeding (mainly haemarthrosis). Osteoporosis is a systemic bone disease characterized by a low bone mineral density (BMD). A decrease of mean BMD has been described in haemophilic patients compared to healthy controls in several studies. So, osteoporosis could be an underestimated haemophilia-related comorbidity. None of the following risk factors (reduced physical activity, joint damage, vitamin D deficiency and /or hepatitis C virus (HCV) infection) has been retained as a cause of osteoporosis in haemophilic patients. Another hypothesis is that bone loss could be directly linked to fVIII or fIX and/or thrombin deficiency. The aim of this study is to evaluate the prevalence of the bone loss in HA and B patients, according to the type, the severity and the presence (or not) of a prophylactic treatment (depending on the age at which it was began) and to compare it to a control population. The investigators will also evaluate the relation between BMD and FVIII, fIX and thrombin potential.
Detailed Description
Recruitment of healthy volunteers through registers (Clinical Investigation Centers) and advertisements. Recruitment of haemophilic patients during a routine visit at the haemophilia centre. Information of the subjects that the study requires a BMD measure for all and a blood sampling for patients only. After inclusion and exclusion criteria have been checked, the subject can sign the consent. For all subjects, an appointment will be made for BMD measure. For patients and controls: BMD will be measured by Dual Energy X-ray Absorptiometry (DXA) technology, on femoral and lumbar spine (L2-L4) sites. For patients, fVIII/fIX activity and antigen, thrombin generation potential and plasmatic markers of bone remodelling will be measured centrally.
Study Type
Interventional
Primary Outcome
Osteoporosis defined by a T-score < -2.5 in severe haemophilic patients without prophylaxis and in healthy subjects.
Secondary Outcome
Osteoporosis defined by a T-score < -2.5 in the different groups of haemophilic patients and in in healthy subjects.
Condition
Hemophilia
Intervention
Bone densitometry (BMD)
Study Arms / Comparison Groups
Haemophilic patients
Description: Blood sampling Bone Densitometry (BMD)
Publications
* Includes publications given by the data provider as well as publications identified by National Clinical Trials Identifier (NCT ID) in Medline.
Recruitment Information
Recruitment Status
Radiation
Estimated Enrollment
480
Start Date
June 2, 2020
Completion Date
May 2022
Primary Completion Date
April 2022
Eligibility Criteria
Inclusion Criteria: - Healthy Volunteers : - Healthy men aged between 20 to 60 years old - Haemophilic Patients: - Haemophilia A and B patients, irrespective of the disease form (mild, moderate, severe with or without prophylaxis) - Haemophilic patients aged between 20 to 60 years old - Severe Haemophilia A patients with prophylaxis : last factor VIII injection more than 48 to 120 hours (depending on on the prophylactic treatment) prior blood sampling dedicated to the this research - Severe Haemophilia B patients : last factor IX injection more than 5 to 21 days (depending on the prophylactic treatment) prior blood sampling dedicated to the this research Exclusion Criteria: - Healthy Volunteers: - History of disease known to influence bone metabolism (hyperthyroidism, hyperparathyroidism, hypercorticism, hypogonadism, diseases that require long-term use of corticoids, …) - Past or present treatment with any osteoporotic medication other than Vit D or Ca++ - Presence of two total hip prostheses - HIV documented infection - HCV documented infection (in progress or cured) at cirrhotic stage - Haemophilic Patients: - Haemophilic patients with current or history of inhibitor anti-fVIII or anti-fIX (>5 Bethesda Units) - Treatment with HEMLIBRA (Emicizumab). Unless it is possible to use a result of thrombin generation prior to this treatment and achieved with a residual rate not greater than or equal to 5%. - History of disease known to influence bone metabolism and not related to haemophilia (hyperthyroidism, hyperparathyroidism, hypercorticism, hypogonadism, diseases that require long-term use of corticoids, …) - Past or present treatment with any anti-osteoporotic medication other than Vit D or Ca++ - Presence of two total hip prostheses - HIV documented infection - HCV documented infection (in progress or cured) at cirrhotic stage
Gender
Male
Ages
20 Years - 60 Years
Accepts Healthy Volunteers
Accepts Healthy Volunteers
Contacts
Brigitte TARDY, MD, (0)477421877, [email protected]
Location Countries
France
Location Countries
France
Administrative Informations
NCT ID
NCT04384341
Organization ID
19PH224
Secondary IDs
2019-A03358-49
Responsible Party
Sponsor
Study Sponsor
Centre Hospitalier Universitaire de Saint Etienne
Collaborators
Ministry of Health, France
Study Sponsor
Brigitte TARDY, MD, Principal Investigator, CHU de Saint Etienne
Verification Date
June 2020