The overall objective of this study is to measure the effect of growth hormone (GH) treatment on physical and psychosocial health in adults with Prader-Willi syndrome. Adults with PWS who have not been treated with GH during the past three years and who will start with GH treatment as part of regular patient care will be asked for informed consent to participate in this open-label prospective cohort study. We hypothesize that growth hormone treatment will improve the physical and psychosocial health.
OBJECTIVES: To measure the effect of GHt on physical and psychosocial health in adults with PWS. The primary endpoint is change in lean body mass (LBM (kg)) as assessed by Dual Energy X-ray Absorptiometry (DEXA) scan. Secondary endpoints are total fat mass, bone density, physical health and psychosocial health. Also the occurrence of side-effects will be assessed. Only data that are collected as part of regular patient care will be used. STUDY DESIGN: Open-label prospective cohort study. STUDY POPULATION: Adults with PWS who have not been treated with GH during the past three years and who will start with GHt as part of regular patient care.
Study Type
OBSERVATIONAL
Enrollment
25
Erasmus MC, University Medical Center Rotterdam
Rotterdam, South Holland, Netherlands
Change in lean body mass
Change in lean body mass (in kg) as measured by Dual Energy X-ray Absorptiometry scan
Time frame: 36 months
Change in fat mass
Change in fat mass (in kg) as measured by Dual Energy X-ray Absorptiometry scan
Time frame: 36 months
Change in bone density
Change in bone density (in T-score) as measured by Dual Energy X-ray Absorptiometry scan
Time frame: 36 months
Change in physical strength
Change in physical strenght as measured by handgrip dynamometer and sit-to-stand tests
Time frame: 36 months
Change in laboratory measurements
Changes in the following laboratory measurements: * Glycosylated hemoglobin (mmol/mol) * Total cholesterol (mmol/L) * Low-density lipoprotein cholesterol (mmol/L) * High-density lipoprotein cholesterol (mmol/L) * Insulin-like growth factor 1 (nmol/L) * Free thyroxine 4 (pmol/L) * Luteinizing hormone (U/I) * Follicle stimulating hormone (U/I) * Estradiol or testosterone (nmol/L) * Sex hormone binding globulin (nmol/L) * Aspartate transaminase (U/L) * Alanine transaminase (U/L) * Alkaline phosphatase (U/L) * Gamma glutamyl transpeptidase (U/L) * Total bilirubin (micromol/L) * Lactate dehydrogenase (U/L) * Urea (mmol/L) * Creatinine (micromol/L) * Hemoglobin (mmol/L) * Hematocrit (L/L) * Mean corpuscular volume (fL) * Leukocytes (10\^9/L) * Thrombocytes (10\^9/L) * 25-OH vitamin D (nmol/L)
Time frame: 36 months
Change in psychosocial functioning
Change in psychosocial functioning as estimated with the Adult Behaviour Checklist
Time frame: 36 months
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Change in caregiver burden
Change in caregiver burden as estimated with the Zarit Burden Interview
Time frame: 36 months