| Summary: | OBJECTIVE: This study aimed to investigate the impact of the different therapy regimens used in multiple myeloma (MM) on bone-specific alkaline phosphatase (BALP) levels. METHODS: One hundred and thirteen patients with MM were included in the study. Patients were grouped according to the regimens they received, as follows: group 1, melphalan and prednisolone (MP); group 2, vincristine, adriablastin, and dexamethasone (VAD); group 3, thalidomide plus dexamethasone; and group 4, bortezomib plus dexamethasone. BALP levels were measured before treatment and at the third and sixth months of treatment. A fifth group consisted of patients in the post-treatment remission period at study entry (no-treatment group). RESULTS: The BALP levels at the third and sixth months of the treatment were significantly higher than the pre-treatment levels in the bortezomib and the no-treatment groups, whereas no significant difference was observed in the MP, VAD, and thalidomide groups. CONCLUSION: Considering that BALP is a surrogate marker of bone formation, our study suggests that bortezomib more efficiently leads to the improvement of bone disease in myeloma than other treatment options.
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