Current standard therapy for patients with haemophilia (PwH) in the prevention of bleeding episodes is a prophylactic intravenous treatment with recombinant coagulation factor (F) VIII (Haemophilia A) or rather FIX (Haemophilia B) two to three times weekly. With the development of recombinant factor VIII Fc fusion protein (rFVIIIFc) the conventional routine prophylaxis regime is complemented by an extended half-life (EHL) factor replacement prophylaxis with the potential of improved bleed prevention and reduced injection frequency at similar factor consumption. Aim of this longitudinal multicentre study is to evaluate the influence of an EHL factor replacement regime with rFVIIIFc on haemophilic specific parameters (annual bleeding rate, bleeding localisation), joint status, pain, functional parameters, treatment adherence and health-related quality of life in PwH A.
Study Type
OBSERVATIONAL
Enrollment
48
Department of Sports Medicine, University of Wuppertal
Wuppertal, North Rhine-Westphalia, Germany
RECRUITINGDepartment of Sports Medicine
Wuppertal, Northwest, Germany
RECRUITINGtotal annual bleeding rate
number of total bleedings
Time frame: one year
orthopaedic joint status (Haemophilia health joint score)
The clinical joint status will be examined in all patients with haemophilia by the World Federation Joint Examination Score and Haemophilia Joint Health Score. Higher score points imply an increased deficit in the functional and structural joint status as a sign of more pronounced haemophilic arthropathy, with a maximum possible value of 124 (no deficits = 0).
Time frame: one year
pressure pain thresholds
physiological Parameter in Newton
Time frame: one year
spontaneous joint ABR
number of total joint bleedings
Time frame: one year
subjective quality of life (SF-36)
The standarized questionnaire SF-36 includes a physical and psychological score. The higher the score, the higher the physical or psychological quality of life. A higher score implies a better physical and mental quality of life
Time frame: two years
subjective physical performance (HEP-Test-Q)
The final version of the standarized questionnaire consists of 25 items pertaining to the domains 'mobility', 'strength \& coordination', 'endurance' and 'body perception'. The response options were a five-point Likert scale (ranging from 1 = never to 5 = always). Some of the items had to be re-coded; subscales and the total score were transformed to a scale of 0-100 with high scores indicating better physical performance
Time frame: two years
self-perceived functional abilities (Haemophilia Activities List)
The Haemophilia Activities List measures the impact of hemophilia on self-perceived functional abilities in adults. It contains 42 multiple choice questions in seven domains: Lying/sitting/kneeling/standing (8 items), Functions of the legs (9 items), Functions of the arms (4 items), Use of transportation (3 items), Self-care (5 items), Household tasks (6 items), Leisure activities and sports (7 items)
Time frame: two years
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