Comparison of Pixantrone + Rituximab With Gemcitabine + Rituximab in Patients With Aggressive B-cell Non-Hodgkin Lymphoma or Follicular Grade 3 Lymphoma Who Have Relapsed After Therapy and Are Not Eligible for Stem Cell Transplant (PIX-R)

Brief Summary:
The purpose of this study is to evaluate the efficacy of Pixantrone + Rituximab compared to Gemcitabine + Rituximab in patients with relapsed or refractory diffuse large B-cell lymphoma (DLBCL), or follicular grade 3 lymphoma.

Detailed Description:
Eligible patients will be randomized to treatment with pixantrone plus rituximab or gemcitabine plus rituximab in up to six 28-day cycles. At the time patients experience progressive disease during study treatment, early follow- up, or intermediate follow-up, they enter the survival follow up period. Patients who complete study treatment or discontinue study treatment for any other reason will participate in the follow-up periods.

Early Follow-Up: After treatment completion or discontinuation, patient will enter a 24-week follow-up period.

Intermediate Follow-Up: After completing the 24-week early follow-up period, patient will enter an additional 72-week follow-up period.

Survival Follow-Up: All patients will be monitored for survival.


Study Type: Interventional  (Clinical Trial)
Estimated Enrollment: 260 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Single (Outcomes Assessor)
Primary Purpose: Treatment
Official Title: A Randomized Multicenter Study Comparing Pixantrone + Rituximab With Gemcitabine + Rituximab in Patients With Aggressive B-cell Non-Hodgkin Lymphoma Who Have Relapsed After Therapy With CHOP-R or an Equivalent Regimen and Are Ineligible for Stem Cell Transplant
Study Start Date: April 2011
Estimated Primary Completion Date: August 2017
Estimated Study Completion Date: December 2017

Arm:
- Experimental: Pixantrone + Rituximab
- Active Comparator: Gemcitabine + Rituximab