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Romosozumab is a monoclonal antibody used to treat osteoporosis in postmenopausal women at high risk of fracture, patients who are intolerant of other treatments, or patients who have failed other treatments.
Romosozumab is a monoclonal antibody used to treat osteoporosis in postmenopausal women at high risk of fracture, patients who are intolerant of other treatments, or patients who have failed other treatments.
Osteocytes secrete sclerostin which inhibits bone formation by binding to low-density lipoprotein (LDL) receptor-related proteins 5 and 6 of osteoblasts, inhibiting the Wnt signal pathway. Romosozumab targets and inhibits the protein sclerostin, thereby preventing inhibition of bone formation by allowing Wnt to bind to LDL receptor-related proteins 5 and 6. Activation of the Wnt pathways leads to downstream signalling, translocation of beta catenin to the osteoblast nucleus where it promotes survival and proliferation of osteoblasts. Sclerostin also promotes bone resorption through increasing production of receptor activator of nuclear factor kappa-beta-ligand (RANKL). Romosozumab's inhibition of sclerostin also inhibits the increase in RANKL dependant increases in osteoclast activity and bone resorption. Both effects from the same therapy have not been seen in other osteoporosis treatments to date.
Romosozumab is indicated for the treatment of osteoporosis in post menopausal women at high risk of fractures and also in patients with osteoperosis who are intolerant to other treatments or who have failed in other treatments.
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