Study of Vorinostat With Doxil and Bortezomib for Patients With Relapsed/Refractory Multiple Myeloma

This is a prospective, open-label single arm phase II trial of vorinostat, bortezomib and pegylated liposomal doxorubicin (PLD) followed by vorinostat/bortezomib (VB) maintenance therapy for patients with relapsed and relapsed and refractory multiple myeloma (MM). The primary hypothesis being evaluated is that the addition of vorinostat to the PLD and bortezomib backbone (VB-PLD) will improve the overall response rate (ORR) as compared to a historical control of PLD in combination with bortezomib.\[1\] We anticipate that the addition of maintenance therapy will not improve the ORR, but may improve the quality (depth) of response and progression free survival (PFS). Secondary endpoints include PFS, high quality response rates (very good partial responses (VGPR) + complete responses (CRs)), duration of remission (DOR), quality of life (QOL), overall survival (OS) and tolerability of the regimen in patients with relapsed and relapsed and refractory multiple myeloma.