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Efficacy and safety of denosumab in postmenopausal women with osteopenia or osteoporosis: a systematic review and a meta-analysis.

Author(s): Anastasilakis AD, Toulis KA, Goulis DG, Polyzos SA, Delaroudis S, Giomisi A, Terpos E

Affiliation(s): Department of Endocrinology, 424 Military Hospital, Thessaloniki, Greece. anastath@endo.gr

Publication date & source: 2009-10, Horm Metab Res., 41(10):721-9. Epub 2009 Jun 17.

Publication type: Meta-Analysis; Review

Receptor activator of nuclear factor-kappaB ligand (RANKL) is a cytokine essential for osteoclast differentiation, activation, and survival. Denosumab, a human monoclonal antibody against RANKL, constitutes a promising antiresorptive agent for osteoporosis. We searched MEDLINE, EMBASE, the Cochrane Central Register of Controlled Trials (CENTRAL), and other trial registries through January 2009. We selected randomized controlled trials (RCTs) of denosumab in women with low bone mass that described the changes on bone markers and bone mineral density (BMD) as well as the adverse events including fracture risk. We analyzed data from nine RCTs involving 10 329 participants. Although denosumab universally decreased bone markers and increased lumbar and hip BMD, the efficacy evaluation based on percentage (%) mean change from the baseline was not possible due to missing data. Denosumab was not associated with a significant reduction in fracture risk [OR (95% CI) 0.74 (0.33 to 1.64), p=0.45]. Increased risk of serious adverse events [OR (95% CI) 1.83 (1.10 to 3.04), p=0.02] and serious infections [OR (95% CI) 4.45 (1.15 to 17.14), p=0.03] were evident. In conclusion, although effective as an antiresorptive agent, denosumab has not yet proved its efficacy on fracture risk reduction while increased infection risk questions its safety. Georg Thieme Verlag KG Stuttgart.New York.

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