Abstract
Acromegaly is characterized by the overproduction of growth hormone (GH) and insulin-like growth factor-1 (IGF-1), both play important roles in regulating bone metabolism. We investigated the risk of vertebral and hip fractures in patients with acromegaly compared to age- and sex-matched controls. This nationwide population-based cohort study included 1,777 patients with acromegaly aged 40years or older in 2006-2016 and 8,885 age- and sex-matched controls. A Cox proportional hazards model was used to estimate the adjusted hazard ratio (HR) [95% confidence interval]. The mean age was 54.3years and 58.9% were female. For approximately 8.5years of follow-up, the patients with acromegaly had significantly higher risks of clinical vertebral (HR 2.09 [1.58-2.78]) and hip (HR 2.52 [1.61-3.95]) fractures than the controls in the multivariate analyses. There were significant differences in the risks of clinical vertebral (P < 0.0001) and hip (P < 0.0001) fractures between the patients with acromegaly and the controls in the Kaplan-Meier survival analysis. The multivariable-adjusted HRs for clinical vertebral fractures comparing the patients with acromegaly with controls during and excluding the first 7years of observation were 1.69 [1.15-2.49] and 2.70 [1.75-4.17], respectively. The HRs for hip fractures during and excluding the first 7years of observation were 2.29 [1.25-4.18] and 3.36 [1.63-6.92], respectively. The patients with acromegaly had a higher risk of hip fractures as well as clinical vertebral fractures than the controls. The increased fracture risk in patients with acromegaly was time-dependent and was observed even during the early period of follow-up.
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More From: Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA
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