Rituximab or Zevalin - Efficacy Trial of Therapeutic Alternatives (RoZetta)

• Sponsor: Spectrum Pharmaceuticals, Inc (Industry)
• Overall Status: Terminated
• CT.gov ID: NCT01662102
• Collaborator: (none)
• Enrollment: 1
• Locations: 5
• Arms: 2
• Actual Duration (Months): 2.8
• Patients Per Site: 0.2
• Patients Per Site Per Month: 0.1

Study Details

Study Description

Brief Summary

The purpose of this study is to evaluate the effect of consolidation treatment Zevalin® versus maintenance treatment with Rituxan® on progression-free survival (PFS) following response induction with chemotherapy plus rituximab in previously untreated participants with follicular lymphoma.

Condition or Disease	Intervention/Treatment	Phase
Follicular Lymphoma	Drug: Zevalin; Drug: Rituximab	Phase 3

Detailed Description

This is an open-label, multicenter and randomized study. Participants registered after response induction (PR/CR) to R-chemotherapy. Participants achieving either a partial response (PR) or complete response (CR) following R-chemotherapy eligible for randomization to either consolidation with 90Y-ibritumumab tiuxetan followed by observation for 24 months, or rituximab maintenance for 24 months. After the observation/maintenance period, patients follow up for 5 years.

This study was terminated early for business reasons. (Maximum duration of study was up to approximately 2.7 months).

Study Design

• Study Type: Interventional
• Actual Enrollment: 1 participants
• Allocation: Randomized
• Intervention Model: Parallel Assignment
• Masking: None (Open Label)
• Primary Purpose: Treatment
• Official Title: An Open-Label, Multicenter, Randomized Study in Previously Untreated Follicular Lymphoma Patients to Evaluate the Efficacy of Consolidation With Zevalin® Versus Maintenance Treatment With Rituximab After Initial Therapeutic Response to Rituximab Plus Chemotherapy
• Actual Study Start Date: Dec 11, 2012
• Actual Primary Completion Date: Mar 5, 2013
• Actual Study Completion Date: Mar 5, 2013

Arms and Interventions

Arm	Intervention/Treatment
Experimental: Zevalin Regimen Consolidation (Group A) 90Y-Ibritumomab tiuxetan administered 8 to 12 weeks after the last chemotherapy infusion. Each participant randomized to this treatment group was to receive a therapeutic dose of 14.8 MBq/kg (0.4 mCi/kg of total body weight) of 90Y ibritumomab tiuxetan (maximum 1,184 MBq or 32 mCi). Participants with a pre-treatment platelet count between 100 and 149 x10^9/L were to receive 0.3 mCi/Kg 90Y-ibritumomab tiuxetan. (Body weight ≤80 kg: 14.8 MBq [0.4 mCi] yttrium-90/kg and Body weight >80 kg: 1,184 MBq [32 mCi] maximum dose). The 90Y ibritumomab tiuxetan regimen is as follows: Day 1 rituximab (250 mg/m^2); Day 7,8, or 9 rituximab (250 mg/m^2) followed by 90Y ibritumomab tiuxetan within 4 hours of the end of the rituximab infusion. (Maximum duration of study was up to approximately 2.7 months).	Drug: Zevalin; Zevalin administered intravenously.; Other Names: 90Y-ibritumomab tiuxetan ; Drug: Rituximab; Rituximab administered intravenously.; Other Names: Rituxan
Active Comparator: Rituximab Maintenance (Group B) Participants were to receive 375 mg/m^2 of rituximab, administered by intravenous (I.V.) infusion every 8 weeks, starting 8 to 12 weeks after the last R-chemotherapy cycle. (Maximum duration of study was up to approximately 2.7 months).	Drug: Rituximab; Rituximab administered intravenously.; Other Names: Rituxan

Outcome Measures

Primary Outcome Measures

1. Progression Free Survival [Up to approximately 2.7 months]

   Progression-free survival (PFS) is defined as the time from randomization until progression, relapse, death from any cause, or introduction of a new anti-lymphoma treatment (chemotherapy, radiation therapy or immunotherapy).

Secondary Outcome Measures

1. Complete Response Rate [Up to approximately 2.7 months]

2. Event Free Survival [Up to approximately 2.7 months]

   EFS time is defined as the time from randomization to first documented progression, death from any cause, or introduction of a new anti-lymphoma treatment (chemotherapy, radiotherapy or immunotherapy).

3. Time to Progression (TTP) [Up to approximately 2.7 months]

   TTP is defined as the time from randomization to the first disease progression.

4. Time to Next Anti-Lymphoma Treatment (TTNLT) [Up to approximately 2.7 months]

   TTNLT is defined as the time from randomization to the first introduction of any new anti lymphoma regimen.

5. Time to Next Chemotherapy (TTNCT) [Up to approximately 2.7 months]

   TTNCT is defined as the time from randomization to the first introduction of any new chemotherapy (cytotoxic or radioimmunotherapy). The TTNCT may be the same as the TTNLT. Participants who respond to treatment and Participants who are lost to follow-up censored at the visit on which the dosing of a new medication was evaluated.

6. Overall Response Rate (ORR) [Up to approximately 2.7 months]

   Tumor response evaluated according to Cheson criteria at the time of randomization and at the end of the maintenance/observation, post randomization. ORR is defined as the percentage of Participants with a complete response (CR) or a partial response (PR), and compared between treatment groups. Participants with no response evaluation (for any reason) considered as not evaluable (NE).

7. Overall Survival (OS) [Up to approximately 2.7 months]

   OS is defined as the time from randomization to death from any cause. In living patients, survival time was censored on the last date participants were known to be alive.

8. Transformation at First Progression [Up to approximately 2.7 months]

   Transformation rate at first progression, defined as the appearance of diffuse areas of large lymphoma cells within a tumor site.

9. Number of Participants With Toxicity [Up to approximately 2.7 months]

   Toxicity graded according to the National Cancer Institute Common Toxicity Criteria for Adverse Events version 4.0.

10. Number of Participants With Secondary Malignancies [Up to approximately 2.7 months]

11. Functional Assessment of Cancer - General (FACT-G) [Up to approximately 2.7 months]

    The FACT-G is a participant rated, 27-item compilation of general questions divided into 4 primary Quality of Life (QOL) sub-scales: physical well-being (PWB; 7-items, score range 0-28), social/family well-being (SWB; 7-items, score range 0-28), emotional well-being (EWB; 6-items, score range 0-24), and functional well-being (FWB; 7-items, score range 0-28). This tool represents the generic core questionnaire that are utilized in combination with cancer site-specific questionnaires, (FBrain, in this study) Overall score and four subscale scores with ranges and distributions that are sample-specific can be calculated.FACT-G is scored by summing the individual scale scores; higher scores indicate better quality of life. FACT-G uses 5-point rating scale ranging from (0) = Not at all; (1) = A little bit; (2) = Somewhat; (3) = Quite a bit; to (4) = Very much.The FACT-G total score is the sum of the four subscale scores (if least 80% completed) and has a possible range of 0-108 points.

12. European Organization for the Research and Treatment of Cancer Quality of Life Questionnaire (EORTC QLQ-C30) [Up to approximately 2.7 months]

    EORTC-QLQ-C30 is a cancer-specific instrument with 30 questions for evaluation of new chemotherapy and provides an assessment of participant reported outcome dimensions. First 28 questions used 4-point scale (1=not at all,2=a little,3=quite a bit,4=very much) for evaluating 5 functional scales (physical,role,emotional,cognitive,social), 3 symptom scales (fatigue,nausea/vomiting,pain) & other single items. For each item,high score represented high level of symptomatology/problem. Last 2 questions represented participant's assessment of overall health & quality of life, coded on 7-point scale (1=very poor to 7=excellent).EORTC QLQ-C30 observed values and change from baseline for global health status (scoring of questions 29 & 30) and 5 functional scales, 3 symptom scales and other single items (scoring of questions 1 to 28). Answers were converted into grading scale, with values between 0 and 100. High score represented a favourable outcome with a best quality of life for participant.

13. Pharmacoeconomics (Cost Effectiveness Analysis) [Up to approximately 2.7 months]

    A cost-effectiveness analysis done that compares the efficiency (cost/effectiveness unit) of consolidation treatment with 90Y-ibritumomab tiuxetan compared to maintenance treatment with rituximab. The analysis conducted according to a health economic analysis plan independent from this clinical study protocol.

Eligibility Criteria

Criteria

• Ages Eligible for Study: 18 Years to 75 Years
• Sexes Eligible for Study: All
• Accepts Healthy Volunteers: No

Inclusion Criteria:

• 18 to 75 years of age.

• Previously untreated with histologically confirmed grade 1, 2 or 3a cluster of differentiation-20 (CD20)-positive follicular lymphoma, with any of the GELF (Groupe d'Etude de Lymphomes Folliculaires) treatment criteria prior to induction.

• Achieved a response to induction treatment with either rituximab-cyclophosphamide, doxorubicin, vincristine, and prednisone (R-CHOP) (6 cycles of R-CHOP21 or R-CHOP14), rituximab-cyclophosphamide, vincristine and prednisone (R-CVP) (6 cycles), or rituximab-bendamustine (R-B) (4 to 6 cycles).

• Must have completed all doses of the induction treatment, except for the modifications allowed in the protocol.

Exclusion Criteria:

• Transformation to high grade lymphoma (secondary to "low grade" follicular lymphoma [FL]).

• Grade 3b follicular lymphoma.

• Primary follicular lymphoma of the skin or gastrointestinal tract.

• Previous treatment of follicular lymphoma.

• Altered renal and hepatic function.

• Known human immunodeficiency virus (HIV) infection and/or active hepatitis B virus (HBV) and/or hepatitis C virus (HCV) infection

• Serious co-morbid conditions (for example, ongoing infection, uncontrolled diabetes mellitus, gastric ulcers, active autoimmune disease).

• Life expectancy < 6.

• Must have:

• Platelet count ≥ 100x10^9/L.

• Bone marrow infiltration <25%.

Contacts and Locations

Locations

	Site	City	State	Country	Postal Code
1	21st Century Oncology	Sun City	Arizona	United States	85351
2	Northeast Georgia Cancer Care	Athens	Georgia	United States	30607
3	Illinois Cancer Specialists	Niles	Illinois	United States	60714
4	Park Nicollet Institute	Saint Louis Park	Minnesota	United States	55426
5	Charleston Area Medical Center	Charleston	West Virginia	United States	25304

Sponsors and Collaborators

• Spectrum Pharmaceuticals, Inc

Investigators

• Principal Investigator: Fernando Cabanillas, MD, M.D. Anderson Cancer Center
• Principal Investigator: Thomas Witzig, MD, The Mayo Clinic & Foundation
• Principal Investigator: Steven E Finkelstein, MD, GenesisCare USA
• Principal Investigator: Leonard Klein, MD, Illinois Cancer Specialists - US Oncology
• Principal Investigator: Steven Jubelirer, MD, West Virginia University
• Principal Investigator: Petros Nikolinakos, MD, Northeast Georgia Cancer Care

Study Documents (Full-Text)

None provided.

More Information

Publications

None provided.

• Responsible Party: Spectrum Pharmaceuticals, Inc
• ClinicalTrials.gov Identifier: NCT01662102
• Other Study ID Numbers: SPI-ZEV-12-302
• First Posted: Aug 10, 2012
• Last Update Posted: Oct 4, 2021
• Last Verified: Sep 1, 2021

• Additional relevant MeSH terms: Lymphoma; Lymphoma, Follicular; Rituximab

Study Results

Participant Flow

Arm/Group Title	Zevalin Regimen Consolidation (Group A)	Rituximab Maintenance (Group B)
Arm/Group Description	90Y-Ibritumomab tiuxetan administered 8 to 12 weeks after the last chemotherapy infusion. Each participant randomized to this treatment group was to receive a therapeutic dose of 14.8 megabecquerel/kilogram (MBq/kg) (0.4 millicurie/kg [mCi/kg] of total body weight) of 90Y ibritumomab tiuxetan (maximum 1,184 MBq or 32 mCi). Participants with a pre-treatment platelet count between 100 and 149 x10^9/L were to receive 0.3 mCi/Kg 90Y-ibritumomab tiuxetan. (Body weight ≤80 kg: 14.8 MBq [0.4 mCi] yttrium-90/kg and Body weight >80 kg: 1,184 MBq [32 mCi] maximum dose). The 90Y ibritumomab tiuxetan regimen is as follows: Day 1 rituximab (250 milligram/meter^2 [mg/m^2]); Day 7,8, or 9 rituximab (250 mg/m^2) followed by 90Y ibritumomab tiuxetan within 4 hours of the end of the rituximab infusion. (Maximum duration of study was up to approximately 2.7 months)	Participants were to receive 375 mg/m^2 of rituximab, administered by intravenous (I.V.) infusion every 8 weeks, starting 8 to 12 weeks after the last R-chemotherapy cycle. (Maximum duration of study was up to approximately 2.7 months)
Period Title: Overall Study
STARTED	1	0
COMPLETED	0	0
NOT COMPLETED	1	0

Baseline Characteristics

Arm/Group Title	Zevalin Regimen Consolidation (Group A)	Rituximab Maintenance (Group B)	Total
Arm/Group Description	990Y-Ibritumomab tiuxetan administered 8 to 12 weeks after the last chemotherapy infusion. Each participant randomized to this treatment group was to receive a therapeutic dose of 14.8 MBq/kg (0.4 mCi/kg of total body weight) of 90Y ibritumomab tiuxetan (maximum 1,184 MBq or 32 mCi). Participants with a pre-treatment platelet count between 100 and 149 x10^9/L were to receive 0.3 mCi/Kg 90Y-ibritumomab tiuxetan. (Body weight ≤80 kg: 14.8 MBq [0.4 mCi] yttrium-90/kg and Body weight >80 kg: 1,184 MBq [32 mCi] maximum dose). The 90Y ibritumomab tiuxetan regimen is as follows: Day 1 rituximab (250 mg/m^2); Day 7,8, or 9 rituximab (250 mg/m^2) followed by 90Y ibritumomab tiuxetan within 4 hours of the end of the rituximab infusion. (Maximum duration of study was up to approximately 2.7 months)	Participants were to receive 375 mg/m^2 of rituximab, administered by intravenous (I.V.) infusion every 8 weeks, starting 8 to 12 weeks after the last R-chemotherapy cycle. (Maximum duration of study was up to approximately 2.7 months).	Total of all reporting groups
Overall Participants	0	0	0
Age () []
<=18 years
Between 18 and 65 years
>=65 years
Sex: Female, Male () []
Female
Male
Ethnicity (NIH/OMB) () []
Hispanic or Latino
Not Hispanic or Latino
Unknown or Not Reported
Race (NIH/OMB) () []
American Indian or Alaska Native
Asian
Native Hawaiian or Other Pacific Islander
Black or African American
White
More than one race
Unknown or Not Reported

Outcome Measures

1. Primary Outcome

Title	Progression Free Survival
Description	Progression-free survival (PFS) is defined as the time from randomization until progression, relapse, death from any cause, or introduction of a new anti-lymphoma treatment (chemotherapy, radiation therapy or immunotherapy).
Time Frame	Up to approximately 2.7 months

Outcome Measure Data

Analysis Population Description

Due to the low number of participants enrolled at only 1 site, 0 participants are reported due to the risk of identification of a person.

Arm/Group Title	Zevalin Regimen Consolidation (Group A)	Rituximab Maintenance (Group B)
Arm/Group Description	90Y-Ibritumomab tiuxetan administered 8 to 12 weeks after the last chemotherapy infusion. Each participant randomized to this treatment group was to receive a therapeutic dose of 14.8 MBq/kg (0.4 mCi/kg of total body weight) of 90Y ibritumomab tiuxetan (maximum 1,184 MBq or 32 mCi). Participants with a pre-treatment platelet count between 100 and 149 x10^9/L were to receive 0.3 mCi/Kg 90Y-ibritumomab tiuxetan. (Body weight ≤80 kg: 14.8 MBq [0.4 mCi] yttrium-90/kg and Body weight >80 kg: 1,184 MBq [32 mCi] maximum dose). The 90Y ibritumomab tiuxetan regimen is as follows: Day 1 rituximab (250 mg/m^2); Day 7,8, or 9 rituximab (250 mg/m^2) followed by 90Y ibritumomab tiuxetan within 4 hours of the end of the rituximab infusion. (Maximum duration of study was up to approximately 2.7 months).	Participants were to receive 375 mg/m^2 of rituximab, administered by intravenous (I.V.) infusion every 8 weeks, starting 8 to 12 weeks after the last R-chemotherapy cycle. (Maximum duration of study was up to approximately 2.7 months).
Measure Participants	0	0

2. Secondary Outcome

Title	Complete Response Rate
Time Frame	Up to approximately 2.7 months

Outcome Measure Data

Analysis Population Description

Due to the low number of participants enrolled at only 1 site, 0 participants are reported due to the risk of identification of a person.

Arm/Group Title	Zevalin Regimen Consolidation (Group A)	Rituximab Maintenance (Group B)
Arm/Group Description	990Y-Ibritumomab tiuxetan administered 8 to 12 weeks after the last chemotherapy infusion. Each participant randomized to this treatment group was to receive a therapeutic dose of 14.8 MBq/kg (0.4 mCi/kg of total body weight) of 90Y ibritumomab tiuxetan (maximum 1,184 MBq or 32 mCi). Participants with a pre-treatment platelet count between 100 and 149 x10^9/L were to receive 0.3 mCi/Kg 90Y-ibritumomab tiuxetan. (Body weight ≤80 kg: 14.8 MBq [0.4 mCi] yttrium-90/kg and Body weight >80 kg: 1,184 MBq [32 mCi] maximum dose). The 90Y ibritumomab tiuxetan regimen is as follows: Day 1 rituximab (250 mg/m^2); Day 7,8, or 9 rituximab (250 mg/m^2) followed by 90Y ibritumomab tiuxetan within 4 hours of the end of the rituximab infusion. (Maximum duration of study was up to approximately 2.7 months)	Participants were to receive 375 mg/m^2 of rituximab, administered by intravenous (I.V.) infusion every 8 weeks, starting 8 to 12 weeks after the last R-chemotherapy cycle. (Maximum duration of study was up to approximately 2.7 months).
Measure Participants	0	0

3. Secondary Outcome

Title	Event Free Survival
Description	EFS time is defined as the time from randomization to first documented progression, death from any cause, or introduction of a new anti-lymphoma treatment (chemotherapy, radiotherapy or immunotherapy).
Time Frame	Up to approximately 2.7 months

Outcome Measure Data

Analysis Population Description

Due to the low number of participants enrolled at only 1 site, 0 participants are reported due to the risk of identification of a person.

Arm/Group Title	Zevalin Regimen Consolidation (Group A)	Rituximab Maintenance (Group B)
Arm/Group Description	990Y-Ibritumomab tiuxetan administered 8 to 12 weeks after the last chemotherapy infusion. Each participant randomized to this treatment group was to receive a therapeutic dose of 14.8 MBq/kg (0.4 mCi/kg of total body weight) of 90Y ibritumomab tiuxetan (maximum 1,184 MBq or 32 mCi). Participants with a pre-treatment platelet count between 100 and 149 x10^9/L were to receive 0.3 mCi/Kg 90Y-ibritumomab tiuxetan. (Body weight ≤80 kg: 14.8 MBq [0.4 mCi] yttrium-90/kg and Body weight >80 kg: 1,184 MBq [32 mCi] maximum dose). The 90Y ibritumomab tiuxetan regimen is as follows: Day 1 rituximab (250 mg/m^2); Day 7,8, or 9 rituximab (250 mg/m^2) followed by 90Y ibritumomab tiuxetan within 4 hours of the end of the rituximab infusion. (Maximum duration of study was up to approximately 2.7 months)	Participants were to receive 375 mg/m^2 of rituximab, administered by intravenous (I.V.) infusion every 8 weeks, starting 8 to 12 weeks after the last R-chemotherapy cycle. (Maximum duration of study was up to approximately 2.7 months).
Measure Participants	0	0

4. Secondary Outcome

Title	Time to Progression (TTP)
Description	TTP is defined as the time from randomization to the first disease progression.
Time Frame	Up to approximately 2.7 months

Outcome Measure Data

Analysis Population Description

Due to the low number of participants enrolled at only 1 site, 0 participants are reported due to the risk of identification of a person.

Arm/Group Title	Zevalin Regimen Consolidation (Group A)	Rituximab Maintenance (Group B)
Arm/Group Description	990Y-Ibritumomab tiuxetan administered 8 to 12 weeks after the last chemotherapy infusion. Each participant randomized to this treatment group was to receive a therapeutic dose of 14.8 MBq/kg (0.4 mCi/kg of total body weight) of 90Y ibritumomab tiuxetan (maximum 1,184 MBq or 32 mCi). Participants with a pre-treatment platelet count between 100 and 149 x10^9/L were to receive 0.3 mCi/Kg 90Y-ibritumomab tiuxetan. (Body weight ≤80 kg: 14.8 MBq [0.4 mCi] yttrium-90/kg and Body weight >80 kg: 1,184 MBq [32 mCi] maximum dose). The 90Y ibritumomab tiuxetan regimen is as follows: Day 1 rituximab (250 mg/m^2); Day 7,8, or 9 rituximab (250 mg/m^2) followed by 90Y ibritumomab tiuxetan within 4 hours of the end of the rituximab infusion. (Maximum duration of study was up to approximately 2.7 months)	Participants were to receive 375 mg/m^2 of rituximab, administered by intravenous (I.V.) infusion every 8 weeks, starting 8 to 12 weeks after the last R-chemotherapy cycle. (Maximum duration of study was up to approximately 2.7 months).
Measure Participants	0	0

5. Secondary Outcome

Title	Time to Next Anti-Lymphoma Treatment (TTNLT)
Description	TTNLT is defined as the time from randomization to the first introduction of any new anti lymphoma regimen.
Time Frame	Up to approximately 2.7 months

Outcome Measure Data

Analysis Population Description

Due to the low number of participants enrolled at only 1 site, 0 participants are reported due to the risk of identification of a person.

Arm/Group Title	Zevalin Regimen Consolidation (Group A)	Rituximab Maintenance (Group B)
Arm/Group Description	990Y-Ibritumomab tiuxetan administered 8 to 12 weeks after the last chemotherapy infusion. Each participant randomized to this treatment group was to receive a therapeutic dose of 14.8 MBq/kg (0.4 mCi/kg of total body weight) of 90Y ibritumomab tiuxetan (maximum 1,184 MBq or 32 mCi). Participants with a pre-treatment platelet count between 100 and 149 x10^9/L were to receive 0.3 mCi/Kg 90Y-ibritumomab tiuxetan. (Body weight ≤80 kg: 14.8 MBq [0.4 mCi] yttrium-90/kg and Body weight >80 kg: 1,184 MBq [32 mCi] maximum dose). The 90Y ibritumomab tiuxetan regimen is as follows: Day 1 rituximab (250 mg/m^2); Day 7,8, or 9 rituximab (250 mg/m^2) followed by 90Y ibritumomab tiuxetan within 4 hours of the end of the rituximab infusion. (Maximum duration of study was up to approximately 2.7 months)	Participants were to receive 375 mg/m^2 of rituximab, administered by intravenous (I.V.) infusion every 8 weeks, starting 8 to 12 weeks after the last R-chemotherapy cycle. (Maximum duration of study was up to approximately 2.7 months).
Measure Participants	0	0

6. Secondary Outcome

Title	Time to Next Chemotherapy (TTNCT)
Description	TTNCT is defined as the time from randomization to the first introduction of any new chemotherapy (cytotoxic or radioimmunotherapy). The TTNCT may be the same as the TTNLT. Participants who respond to treatment and Participants who are lost to follow-up censored at the visit on which the dosing of a new medication was evaluated.
Time Frame	Up to approximately 2.7 months

Outcome Measure Data

Analysis Population Description

Due to the low number of participants enrolled at only 1 site, 0 participants are reported due to the risk of identification of a person.

Arm/Group Title	Zevalin Regimen Consolidation (Group A)	Rituximab Maintenance (Group B)
Arm/Group Description	990Y-Ibritumomab tiuxetan administered 8 to 12 weeks after the last chemotherapy infusion. Each participant randomized to this treatment group was to receive a therapeutic dose of 14.8 MBq/kg (0.4 mCi/kg of total body weight) of 90Y ibritumomab tiuxetan (maximum 1,184 MBq or 32 mCi). Participants with a pre-treatment platelet count between 100 and 149 x10^9/L were to receive 0.3 mCi/Kg 90Y-ibritumomab tiuxetan. (Body weight ≤80 kg: 14.8 MBq [0.4 mCi] yttrium-90/kg and Body weight >80 kg: 1,184 MBq [32 mCi] maximum dose). The 90Y ibritumomab tiuxetan regimen is as follows: Day 1 rituximab (250 mg/m^2); Day 7,8, or 9 rituximab (250 mg/m^2) followed by 90Y ibritumomab tiuxetan within 4 hours of the end of the rituximab infusion. (Maximum duration of study was up to approximately 2.7 months)	Participants were to receive 375 mg/m^2 of rituximab, administered by intravenous (I.V.) infusion every 8 weeks, starting 8 to 12 weeks after the last R-chemotherapy cycle. (Maximum duration of study was up to approximately 2.7 months).
Measure Participants	0	0

7. Secondary Outcome

Title	Overall Response Rate (ORR)
Description	Tumor response evaluated according to Cheson criteria at the time of randomization and at the end of the maintenance/observation, post randomization. ORR is defined as the percentage of Participants with a complete response (CR) or a partial response (PR), and compared between treatment groups. Participants with no response evaluation (for any reason) considered as not evaluable (NE).
Time Frame	Up to approximately 2.7 months

Outcome Measure Data

Analysis Population Description

Due to the low number of participants enrolled at only 1 site, 0 participants are reported due to the risk of identification of a person.

Arm/Group Title	Zevalin Regimen Consolidation (Group A)	Rituximab Maintenance (Group B)
Arm/Group Description	990Y-Ibritumomab tiuxetan administered 8 to 12 weeks after the last chemotherapy infusion. Each participant randomized to this treatment group was to receive a therapeutic dose of 14.8 MBq/kg (0.4 mCi/kg of total body weight) of 90Y ibritumomab tiuxetan (maximum 1,184 MBq or 32 mCi). Participants with a pre-treatment platelet count between 100 and 149 x10^9/L were to receive 0.3 mCi/Kg 90Y-ibritumomab tiuxetan. (Body weight ≤80 kg: 14.8 MBq [0.4 mCi] yttrium-90/kg and Body weight >80 kg: 1,184 MBq [32 mCi] maximum dose). The 90Y ibritumomab tiuxetan regimen is as follows: Day 1 rituximab (250 mg/m^2); Day 7,8, or 9 rituximab (250 mg/m^2) followed by 90Y ibritumomab tiuxetan within 4 hours of the end of the rituximab infusion. (Maximum duration of study was up to approximately 2.7 months)	Participants were to receive 375 mg/m^2 of rituximab, administered by intravenous (I.V.) infusion every 8 weeks, starting 8 to 12 weeks after the last R-chemotherapy cycle. (Maximum duration of study was up to approximately 2.7 months).
Measure Participants	0	0

8. Secondary Outcome

Title	Overall Survival (OS)
Description	OS is defined as the time from randomization to death from any cause. In living patients, survival time was censored on the last date participants were known to be alive.
Time Frame	Up to approximately 2.7 months

Outcome Measure Data

Analysis Population Description

Due to the low number of participants enrolled at only 1 site, 0 participants are reported due to the risk of identification of a person.

Arm/Group Title	Zevalin Regimen Consolidation (Group A)	Rituximab Maintenance (Group B)
Arm/Group Description	990Y-Ibritumomab tiuxetan administered 8 to 12 weeks after the last chemotherapy infusion. Each participant randomized to this treatment group was to receive a therapeutic dose of 14.8 MBq/kg (0.4 mCi/kg of total body weight) of 90Y ibritumomab tiuxetan (maximum 1,184 MBq or 32 mCi). Participants with a pre-treatment platelet count between 100 and 149 x10^9/L were to receive 0.3 mCi/Kg 90Y-ibritumomab tiuxetan. (Body weight ≤80 kg: 14.8 MBq [0.4 mCi] yttrium-90/kg and Body weight >80 kg: 1,184 MBq [32 mCi] maximum dose). The 90Y ibritumomab tiuxetan regimen is as follows: Day 1 rituximab (250 mg/m^2); Day 7,8, or 9 rituximab (250 mg/m^2) followed by 90Y ibritumomab tiuxetan within 4 hours of the end of the rituximab infusion. (Maximum duration of study was up to approximately 2.7 months)	Participants were to receive 375 mg/m^2 of rituximab, administered by intravenous (I.V.) infusion every 8 weeks, starting 8 to 12 weeks after the last R-chemotherapy cycle. (Maximum duration of study was up to approximately 2.7 months).
Measure Participants	0	0

9. Secondary Outcome

Title	Transformation at First Progression
Description	Transformation rate at first progression, defined as the appearance of diffuse areas of large lymphoma cells within a tumor site.
Time Frame	Up to approximately 2.7 months

Outcome Measure Data

Analysis Population Description

Due to the low number of participants enrolled at only 1 site, 0 participants are reported due to the risk of identification of a person.

Arm/Group Title	Zevalin Regimen Consolidation (Group A)	Rituximab Maintenance (Group B)
Arm/Group Description	990Y-Ibritumomab tiuxetan administered 8 to 12 weeks after the last chemotherapy infusion. Each participant randomized to this treatment group was to receive a therapeutic dose of 14.8 MBq/kg (0.4 mCi/kg of total body weight) of 90Y ibritumomab tiuxetan (maximum 1,184 MBq or 32 mCi). Participants with a pre-treatment platelet count between 100 and 149 x10^9/L were to receive 0.3 mCi/Kg 90Y-ibritumomab tiuxetan. (Body weight ≤80 kg: 14.8 MBq [0.4 mCi] yttrium-90/kg and Body weight >80 kg: 1,184 MBq [32 mCi] maximum dose). The 90Y ibritumomab tiuxetan regimen is as follows: Day 1 rituximab (250 mg/m^2); Day 7,8, or 9 rituximab (250 mg/m^2) followed by 90Y ibritumomab tiuxetan within 4 hours of the end of the rituximab infusion. (Maximum duration of study was up to approximately 2.7 months)	Participants were to receive 375 mg/m^2 of rituximab, administered by intravenous (I.V.) infusion every 8 weeks, starting 8 to 12 weeks after the last R-chemotherapy cycle. (Maximum duration of study was up to approximately 2.7 months).
Measure Participants	0	0

10. Secondary Outcome

Title	Number of Participants With Toxicity
Description	Toxicity graded according to the National Cancer Institute Common Toxicity Criteria for Adverse Events version 4.0.
Time Frame	Up to approximately 2.7 months

Outcome Measure Data

Analysis Population Description

Due to the low number of participants enrolled at only 1 site, 0 participants are reported due to the risk of identification of a person.

Arm/Group Title	Zevalin Regimen Consolidation (Group A)	Rituximab Maintenance (Group B)
Arm/Group Description	990Y-Ibritumomab tiuxetan administered 8 to 12 weeks after the last chemotherapy infusion. Each participant randomized to this treatment group was to receive a therapeutic dose of 14.8 MBq/kg (0.4 mCi/kg of total body weight) of 90Y ibritumomab tiuxetan (maximum 1,184 MBq or 32 mCi). Participants with a pre-treatment platelet count between 100 and 149 x10^9/L were to receive 0.3 mCi/Kg 90Y-ibritumomab tiuxetan. (Body weight ≤80 kg: 14.8 MBq [0.4 mCi] yttrium-90/kg and Body weight >80 kg: 1,184 MBq [32 mCi] maximum dose). The 90Y ibritumomab tiuxetan regimen is as follows: Day 1 rituximab (250 mg/m^2); Day 7,8, or 9 rituximab (250 mg/m^2) followed by 90Y ibritumomab tiuxetan within 4 hours of the end of the rituximab infusion. (Maximum duration of study was up to approximately 2.7 months)	Participants were to receive 375 mg/m^2 of rituximab, administered by intravenous (I.V.) infusion every 8 weeks, starting 8 to 12 weeks after the last R-chemotherapy cycle. (Maximum duration of study was up to approximately 2.7 months).
Measure Participants	0	0

11. Secondary Outcome

Title	Number of Participants With Secondary Malignancies
Time Frame	Up to approximately 2.7 months

Outcome Measure Data

Analysis Population Description

Due to the low number of participants enrolled at only 1 site, 0 participants are reported due to the risk of identification of a person.

Arm/Group Title	Zevalin Regimen Consolidation (Group A)	Rituximab Maintenance (Group B)
Arm/Group Description	990Y-Ibritumomab tiuxetan administered 8 to 12 weeks after the last chemotherapy infusion. Each participant randomized to this treatment group was to receive a therapeutic dose of 14.8 MBq/kg (0.4 mCi/kg of total body weight) of 90Y ibritumomab tiuxetan (maximum 1,184 MBq or 32 mCi). Participants with a pre-treatment platelet count between 100 and 149 x10^9/L were to receive 0.3 mCi/Kg 90Y-ibritumomab tiuxetan. (Body weight ≤80 kg: 14.8 MBq [0.4 mCi] yttrium-90/kg and Body weight >80 kg: 1,184 MBq [32 mCi] maximum dose). The 90Y ibritumomab tiuxetan regimen is as follows: Day 1 rituximab (250 mg/m^2); Day 7,8, or 9 rituximab (250 mg/m^2) followed by 90Y ibritumomab tiuxetan within 4 hours of the end of the rituximab infusion. (Maximum duration of study was up to approximately 2.7 months)	Participants were to receive 375 mg/m^2 of rituximab, administered by intravenous (I.V.) infusion every 8 weeks, starting 8 to 12 weeks after the last R-chemotherapy cycle. (Maximum duration of study was up to approximately 2.7 months).
Measure Participants	0	0

12. Secondary Outcome

Title	Functional Assessment of Cancer - General (FACT-G)
Description	The FACT-G is a participant rated, 27-item compilation of general questions divided into 4 primary Quality of Life (QOL) sub-scales: physical well-being (PWB; 7-items, score range 0-28), social/family well-being (SWB; 7-items, score range 0-28), emotional well-being (EWB; 6-items, score range 0-24), and functional well-being (FWB; 7-items, score range 0-28). This tool represents the generic core questionnaire that are utilized in combination with cancer site-specific questionnaires, (FBrain, in this study) Overall score and four subscale scores with ranges and distributions that are sample-specific can be calculated.FACT-G is scored by summing the individual scale scores; higher scores indicate better quality of life. FACT-G uses 5-point rating scale ranging from (0) = Not at all; (1) = A little bit; (2) = Somewhat; (3) = Quite a bit; to (4) = Very much.The FACT-G total score is the sum of the four subscale scores (if least 80% completed) and has a possible range of 0-108 points.
Time Frame	Up to approximately 2.7 months

Outcome Measure Data

Analysis Population Description

Due to the low number of participants enrolled at only 1 site, 0 participants are reported due to the risk of identification of a person.

Arm/Group Title	Zevalin Regimen Consolidation (Group A)	Rituximab Maintenance (Group B)
Arm/Group Description	990Y-Ibritumomab tiuxetan administered 8 to 12 weeks after the last chemotherapy infusion. Each participant randomized to this treatment group was to receive a therapeutic dose of 14.8 MBq/kg (0.4 mCi/kg of total body weight) of 90Y ibritumomab tiuxetan (maximum 1,184 MBq or 32 mCi). Participants with a pre-treatment platelet count between 100 and 149 x10^9/L were to receive 0.3 mCi/Kg 90Y-ibritumomab tiuxetan. (Body weight ≤80 kg: 14.8 MBq [0.4 mCi] yttrium-90/kg and Body weight >80 kg: 1,184 MBq [32 mCi] maximum dose). The 90Y ibritumomab tiuxetan regimen is as follows: Day 1 rituximab (250 mg/m^2); Day 7,8, or 9 rituximab (250 mg/m^2) followed by 90Y ibritumomab tiuxetan within 4 hours of the end of the rituximab infusion. (Maximum duration of study was up to approximately 2.7 months)	Participants were to receive 375 mg/m^2 of rituximab, administered by intravenous (I.V.) infusion every 8 weeks, starting 8 to 12 weeks after the last R-chemotherapy cycle. (Maximum duration of study was up to approximately 2.7 months).
Measure Participants	0	0

13. Secondary Outcome

Title	European Organization for the Research and Treatment of Cancer Quality of Life Questionnaire (EORTC QLQ-C30)
Description	EORTC-QLQ-C30 is a cancer-specific instrument with 30 questions for evaluation of new chemotherapy and provides an assessment of participant reported outcome dimensions. First 28 questions used 4-point scale (1=not at all,2=a little,3=quite a bit,4=very much) for evaluating 5 functional scales (physical,role,emotional,cognitive,social), 3 symptom scales (fatigue,nausea/vomiting,pain) & other single items. For each item,high score represented high level of symptomatology/problem. Last 2 questions represented participant's assessment of overall health & quality of life, coded on 7-point scale (1=very poor to 7=excellent).EORTC QLQ-C30 observed values and change from baseline for global health status (scoring of questions 29 & 30) and 5 functional scales, 3 symptom scales and other single items (scoring of questions 1 to 28). Answers were converted into grading scale, with values between 0 and 100. High score represented a favourable outcome with a best quality of life for participant.
Time Frame	Up to approximately 2.7 months

Outcome Measure Data

Analysis Population Description

Due to the low number of participants enrolled at only 1 site, 0 participants are reported due to the risk of identification of a person.

Arm/Group Title	Zevalin Regimen Consolidation (Group A)	Rituximab Maintenance (Group B)
Arm/Group Description	990Y-Ibritumomab tiuxetan administered 8 to 12 weeks after the last chemotherapy infusion. Each participant randomized to this treatment group was to receive a therapeutic dose of 14.8 MBq/kg (0.4 mCi/kg of total body weight) of 90Y ibritumomab tiuxetan (maximum 1,184 MBq or 32 mCi). Participants with a pre-treatment platelet count between 100 and 149 x10^9/L were to receive 0.3 mCi/Kg 90Y-ibritumomab tiuxetan. (Body weight ≤80 kg: 14.8 MBq [0.4 mCi] yttrium-90/kg and Body weight >80 kg: 1,184 MBq [32 mCi] maximum dose). The 90Y ibritumomab tiuxetan regimen is as follows: Day 1 rituximab (250 mg/m^2); Day 7,8, or 9 rituximab (250 mg/m^2) followed by 90Y ibritumomab tiuxetan within 4 hours of the end of the rituximab infusion. (Maximum duration of study was up to approximately 2.7 months)	Participants were to receive 375 mg/m^2 of rituximab, administered by intravenous (I.V.) infusion every 8 weeks, starting 8 to 12 weeks after the last R-chemotherapy cycle. (Maximum duration of study was up to approximately 2.7 months).
Measure Participants	0	0

14. Secondary Outcome

Title	Pharmacoeconomics (Cost Effectiveness Analysis)
Description	A cost-effectiveness analysis done that compares the efficiency (cost/effectiveness unit) of consolidation treatment with 90Y-ibritumomab tiuxetan compared to maintenance treatment with rituximab. The analysis conducted according to a health economic analysis plan independent from this clinical study protocol.
Time Frame	Up to approximately 2.7 months

Outcome Measure Data

Analysis Population Description

Due to the low number of participants enrolled at only 1 site, 0 participants are reported due to the risk of identification of a person.

Arm/Group Title	Zevalin Regimen Consolidation (Group A)	Rituximab Maintenance (Group B)
Arm/Group Description	990Y-Ibritumomab tiuxetan administered 8 to 12 weeks after the last chemotherapy infusion. Each participant randomized to this treatment group was to receive a therapeutic dose of 14.8 MBq/kg (0.4 mCi/kg of total body weight) of 90Y ibritumomab tiuxetan (maximum 1,184 MBq or 32 mCi). Participants with a pre-treatment platelet count between 100 and 149 x10^9/L were to receive 0.3 mCi/Kg 90Y-ibritumomab tiuxetan. (Body weight ≤80 kg: 14.8 MBq [0.4 mCi] yttrium-90/kg and Body weight >80 kg: 1,184 MBq [32 mCi] maximum dose). The 90Y ibritumomab tiuxetan regimen is as follows: Day 1 rituximab (250 mg/m^2); Day 7,8, or 9 rituximab (250 mg/m^2) followed by 90Y ibritumomab tiuxetan within 4 hours of the end of the rituximab infusion. (Maximum duration of study was up to approximately 2.7 months)	Participants were to receive 375 mg/m^2 of rituximab, administered by intravenous (I.V.) infusion every 8 weeks, starting 8 to 12 weeks after the last R-chemotherapy cycle. (Maximum duration of study was up to approximately 2.7 months).
Measure Participants	0	0

Adverse Events

Time Frame	Up to approximately 2.7 months
Adverse Event Reporting Description	At each visit the investigator had to document any occurrence of adverse events and abnormal laboratory findings. Any event spontaneously reported by the participant or observed by the investigator was recorded, irrespective of the relation to study treatment. Due to the low number of participants enrolled at only 1 site, 0 participants are reported due to the risk of identification of a person.
Arm/Group Title	Zevalin Regimen Consolidation (Group A)		Rituximab Maintenance (Group B)
Arm/Group Description	90Y-Ibritumomab tiuxetan administered 8 to 12 weeks after the last chemotherapy infusion. Each participant randomized to this treatment group was to receive a therapeutic dose of 14.8 MBq/kg (0.4 mCi/kg of total body weight) of 90Y ibritumomab tiuxetan (maximum 1,184 MBq or 32 mCi). Participants with a pre-treatment platelet count between 100 and 149 x10^9/L were to receive 0.3 mCi/Kg 90Y-ibritumomab tiuxetan. (Body weight ≤80 kg: 14.8 MBq [0.4 mCi] yttrium-90/kg and Body weight >80 kg: 1,184 MBq [32 mCi] maximum dose). The 90Y ibritumomab tiuxetan regimen is as follows: Day 1 rituximab (250 mg/m^2); Day 7,8, or 9 rituximab (250 mg/m^2) followed by 90Y ibritumomab tiuxetan within 4 hours of the end of the rituximab infusion. (Maximum duration of study was up to approximately 2.7 months).		Participants were to receive 375 mg/m^2 of rituximab, administered by intravenous (I.V.) infusion every 8 weeks, starting 8 to 12 weeks after the last R-chemotherapy cycle. (Maximum duration of study was up to approximately 2.7 months).
All Cause Mortality
	Zevalin Regimen Consolidation (Group A)		Rituximab Maintenance (Group B)
	Affected / at Risk (%)	# Events	Affected / at Risk (%)	# Events
Total	/ (NaN)		/ (NaN)
Serious Adverse Events
	Zevalin Regimen Consolidation (Group A)		Rituximab Maintenance (Group B)
	Affected / at Risk (%)	# Events	Affected / at Risk (%)	# Events
Total	0/0 (NaN)		0/0 (NaN)
Other (Not Including Serious) Adverse Events
	Zevalin Regimen Consolidation (Group A)		Rituximab Maintenance (Group B)
	Affected / at Risk (%)	# Events	Affected / at Risk (%)	# Events
Total	0/0 (NaN)		0/0 (NaN)

Limitations/Caveats

[Not Specified]

More Information

Certain Agreements

Principal Investigators are NOT employed by the organization sponsoring the study.

There is NOT an agreement between Principal Investigators and the Sponsor (or its agents) that restricts the PI's rights to discuss or publish trial results after the trial is completed.