Abstract
POEMS (polyneuropathy, organomegaly, endocrinopathy, monoclonal gammopathy, and skin changes) syndrome is a rare plasma cell dyscrasia without standard front-line treatment. Merely, few studies have reported the responses and outcomes of bortezomib plus dexamethasone (BDex) in POEMS syndrome. In this study, a total of 69 patients (40 males) treated with front-line BDex were included. The median age at diagnosis was 50years (range, 30-78years). After a median of 9 cycles BDex (range 1-9), fifty-two (88.1%), thirty-two (46.4%), and forty-seven (71.2%) patients achieved the best neurologic response, hematological complete response, and serum vascular endothelial growth factor (VEGF) response, respectively. The extravascular overload, pulmonary hypertension, and renal impairment also substantially improved. No treatment-related death occurred. Two patients developed grade-1 bortezomib-induced peripheral neuropathy and were reversible after drug withdrawal. After a median follow-up of 22.5months, the estimated 2-year overall survival and time to next treatment were 95.7% and 65.6%, respectively.In conclusion,the combination of bortezomib and dexamethasone is effective, with a high response rate and safety profile for patients with newly diagnosed POEMS syndrome.
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