Efficacy of First Line DRC +/- Bortezomib for Patients With Waldenström's Macroglobulinemia

Waldenström's Macroglobulinemia Clinical Trial

Official title: Efficacy of First Line Dexamethasone, Rituximab and Cyclophosphamide (DRC) +/- Bortezomib for Patients With Waldenström's Macroglobulinemia

Status Completed

Clinical Trial Summary

In Waldenström macroglobulinemia (WM) conventional chemotherapy induces only low CR rates and responses of short duration compared to other indolent lymphomas. Thus innovative approaches are needed which combine excellent activity and tolerability in patients with WM, who are mostly of advanced age. The immunochemotherapy DRC (dexamethasone, rituximab, cyclophosphamide) was shown to be highly effective in patients with WM without inducing major hematological toxicities. On the other hand the proteasome inhibitor Bortezomib showed substantial activity as a single agent in WM with only very few side effects when given in a weekly schedule. Based on these observations it is the aim of this study to test whether the efficacy of the well tolerated DRC regime can be further improved by adding Bortezomib.

Clinical Trial Description

Waldenström's macroglobulinemia (WM) is defined by a bone marrow infiltration by lymphoplasmacytic cells and the presence of a monoclonal immunoglobulin (Ig) M gammopathy in the peripheral blood. The clinical understanding of the disease has been greatly improved by the identification of internationally recognized criteria for initiating therapy, the description of an international prognostic index for patients requiring a first-line therapy and the definition of response criteria. These criteria are mainly based on the evolution of serum IgM concentration. However, delayed IgM monoclonal protein responses may cause important difficulties in response assessment. In addition, discrepancies between the kinetics of serum M protein reduction and the clearance of monoclonal B-cells from the bone marrow have been reported. Despite continuing advances in the therapy of WM, the disease remains incurable with a median survival of 5 to 8 years from the time of diagnosis thereby necessitating the development and evaluation of novel treatment approaches. ;

Related Conditions & MeSH terms

• Waldenstrom Macroglobulinemia
• Waldenström's Macroglobulinemia

• NCT number: NCT01788020
• Study type: Interventional
• Source: University of Ulm
• Status: Completed
• Phase: Phase 3
• Start date: November 2013
• Completion date: April 2024