Rituximab in Treating Patients With Low Tumor Burden Indolent Non-Hodgkin's Lymphoma
RATIONALE: Monoclonal antibodies such as rituximab can locate cancer cells and either kill them or deliver cancer-killing substances to them without harming normal cells. It is not yet known which rituximab regimen is more effective in treating indolent non-Hodgkin's lymphoma.
PURPOSE: This randomized phase III trial is studying two different schedules of rituximab and comparing them to see how well they work in treating patients with low tumor burden indolent stage III non-Hodgkin's lymphoma or stage IV non-Hodgkin's lymphoma.
|Study Design:||Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Open Label
Primary Purpose: Treatment
|Official Title:||Randomized Phase III Trial Comparing Two Different Rituximab Dosing Regimens For Patients With Low Tumor Burden Indolent Non-Hodgkin's Lymphoma|
- Time to Rituximab Failure (TTRF) [ Time Frame: Assessed (by restaging CT scans) 26 weeks ± 2 weeks from each rituximab treatment (including induction), counting the first rituximab dose as Day 1, until rituximab failure observed or July 17, 2013, whichever occurred first. ]TTRF is defined as the time from randomization until any one of the following criteria are met, and censored at last disease assessment for cases who have not experienced failure (with the cut-off date for final analysis of 11/1/2011): 1. No response (partial response (PR) or complete response (CR)) to rituximab retreatment (Arm A treatment). 2. Time to progression < 26 weeks from day 1 of most recent rituximab treatment. 3. Initiation of alternative therapy. 4. Inability to complete protocol therapy (due to adverse events, patient preference, or any other reason, including death).
- Time to First Cytotoxic Therapy (TTFC) [ Time Frame: Assessed every 13 weeks until rituximab failure observed or August 2013, whichever occurred first. ]TTFC is defined as the time from randomization to the time of first cytotoxic therapy (chemo and radio therapy), and censored as last follow-up time if no cytotoxic therapy has been used. Since median TTFC was not reached in 3 out of the 4 groups, 3-year TTFC was reported which was defined as the probability of not starting first cytotoxic therapy at 3 years.
- Overall Health-related Quality of Life (HRQL) at 6 Month After Randomization [ Time Frame: Assessed at baseline and 6 months after randomization. ]The overall HRQL was measured by the change in Functional Assessment of Cancer Therapy - General (FACT-G) from baseline to 6 months after randomization. The FACT-G is a 27-item assessment used to measure HRQL, specifically, physical, functional, social and emotional well-being. The total score ranges from 0 to 108, with higher scores indicating better HRQL.
|Study Start Date:||November 2003|
|Estimated Study Completion Date:||September 2023|
|Primary Completion Date:||September 2013 (Final data collection date for primary outcome measure)|
Active Comparator: Arm A: Rituximab Retreatment
Patients receive rituximab IV once a week for 4 weeks upon disease progression provided time to progression is more than 6 months.
Experimental: Arm B: Rituximab Scheduled
Patients receive a single dose of rituximab IV once every 13 weeks until disease progression and in the absence of unacceptable toxicity.
- To compare time to rituximab failure between the rituximab scheduled and rituximab retreatment arms.
- To compare the time to first cytotoxic therapy between the rituximab scheduled and rituximab retreatment arms.
- To document the rationale for beginning cytotoxic therapy; defined as chemotherapy, radiation therapy or radioimmunotherapy.
- To compare the toxicities associated with rituximab therapy between the two randomized treatment arms.
Quality of Life Objectives:
- To compare health-related quality of life, distress, psychological functioning, physical well-being and functional well-being of patients receiving rituximab scheduled to those receiving rituximab retreatment.
- To examine the impact of differential treatment response (delayed time to rituximab failure and/or time to first cytotoxic therapy), if observed, on quality of life, distress, and psychological functioning on patients receiving rituximab scheduled to those receiving rituximab retreatment.
- To obtain prospective data on physical and functional well-being during treatment with rituximab.
OUTLINE: This is a randomized, multicenter study. Patients are stratified according to histologic subtype (follicular vs other), age (under 60 vs 60 and over), and the time from diagnosis (less than 1 year vs at least 1 year).
- Induction rituximab: Patients receive rituximab Intravenous (IV) once a week for 4 weeks.
Patients are re-evaluated 9 weeks after the completion of induction rituximab. Patients with a partial or complete response to induction rituximab are randomized to 1 of 2 treatment arms.
- Arm A (retreatment rituximab): Patients receive rituximab IV once a week for 4 weeks upon disease progression provided time to progression is more than 6 months.
- Arm B (scheduled rituximab): Patients receive a single dose of rituximab IV once every 13 weeks until disease progression and in the absence of unacceptable toxicity.
Quality of life is assessed after induction rituximab treatment and at 26, 39, 65, 117, 169, and 221 weeks after randomization.
Patients are followed at least annually for 15 years from study entry.
Please refer to this study by its ClinicalTrials.gov identifier: NCT00075946
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|Study Chair:||Brad S. Kahl, MD||University of Wisconsin, Madison|