[Paget's disease of bone: new therapeutic strategies]

Paget's disease of bone is a chronic disorder of unknown etiology that can result in enlarged and misshapen bones. The excessive breakdown and formation of bone tissue cause affected bones to weaken, resulting in pain, misshapen bones, fractures, and arthritis in the joints. In most cases the diagnosis is achieved casually, as only 5% of patients develop burning pain at the level of affected bones. As regards therapy, the use of anti-reabsorbing drugs, such as bisphosphonates and calcitonin, appears reasonable. Given the disease pathogenesis, the administration of denosumab and tocilizumab may be a valuable alternative to inhibit RANK expression, and thus osteoclast formation, and interleukin-6 production.