View clinical trials related to POEMS Syndrome.
Filter by:The purpose of this prospective study is to determine the efficacy and safety of lenalidomide plus dexamethasone in patients with newly diagnosed POEMS syndrome.
POEMS syndrome is a rare form of B cell dyscrasia combining a proliferation usually of plasma cells, a polyneuropathy, osteocondensing bone lesions and multiple other clinical signs. Lenalidomide appears to be particularly efficient in this pathology. The investigators propose a phase II multicentre protocol, based on the use of lenalidomide combined with dexamethasone in patients presenting a POEMS syndrome, either de novo or resistant or in relapse. Patients who can be treated by local radiation or intensive treatment with stem cell support will undergo 2 cycles of the lenalidomide-dexamethasone (Len-Dex) combination before radiation or intensive treatment (Group 1), the other patients will undergo 9 cycles of the Len-Dex combination (Group 2). A biological study is coupled with this clinical protocol in order to define the best biological markers predicting clinical responses, to better understand the POEMS pathophysiological mechanisms and to set up a bank of samples which can be used to study this rare pathology.
Lenalidomide is a immunomodulatory drug derived from thalidomide, without neurotoxicity. Lenalidomide blocks the increased secretion of interleukin-6, tumor necrosis factor alpha and vascular endothelial growth factor (VEGF). The association with dexamethasone increased Lenalidomide response rate. More recently the efficacy of Lenalidomide has been reported in a patient with POEMS (POEMS:polyneuropathy, organomegaly, endocrinopathy, monoclonal gammopathy, and skin changes) syndrome with improvement of clinical condition and reduction of vascular endothelial growth factor (VEGF) and interleukin-6 (IL-6) level.