Long-term effect on bone mineral density of denosumab in the treatment of hyperpituitarism driven osteoporosis: an exploratory study
摘要
Treatment of skeletal fragility in patients with pituitary diseases is challenging. Denosumab, an antiresorptive bone active drug, increased bone mineral density (BMD) and reduced incidence and risk of fractures in primary osteoporosis. This study aimed to evaluate the efficacy of denosumab in patients with pituitary disease-driven osteoporosis.
MethodsThis retrospective study investigated the frequency of fragility fractures (FF) and the percent BMD changes at 1-, 2-, 5-, and 10-years of treatment with denosumab, in patients with osteoporosis due to secreting pituitary adenoma.
ResultsSeventeen patients were included: 5 patients (29.4%) were affected by hyperprolactinemia due to PRL-secreting pituitary adenoma (PAs), six patients (35.3%) were affected by acromegaly and six patients (35.3%) by Cushing’s disease. Four patients carried prevalent-FF (23.5%). A single patient with acromegaly developed FF at 2 and at 5 years of treatment with denosumab. Femoral neck BMD increased in 11 patients (64.7%) at 1 year of treatment, in 9 patients (52.9%) at 2 years of treatment, in 8 patients (47.1%) at 5 years of treatment and in 2 patients (66.7%) at 10 years of treatment. Lumbar spine BMD improved in all patients at 1 year of treatment (100%), in 16 patients at 2 years of treatment (100%), in 11 patients at 5 years of treatment (100%), and in 2 patients at 10 years of treatment (66.7%). No drug related adverse events occurred.
ConclusionsThis study demonstrated for the first time that long-term treatment with denosumab is effective and safe in patients with osteoporosis due to secreting pituitary adenoma.