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Tositumomab and Iodine I 131 Tositumomab in Treating Patients With Chronic Lymphocytic Leukemia or Small Lymphocytic Lymphoma in First Remission

A Study of 131I-Tositumomab (Bexxar®) Consolidation in Patients With B-Cell Chronic Lymphocytic Leukemia or Small Lymphocytic Lymphoma in First Remission

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00476047
Enrollment
16
Registered
2007-05-21
Start date
2007-02-28
Completion date
2015-02-28
Last updated
2017-10-12

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Lymphoid Leukemia in Remission, Stage I Chronic Lymphocytic Leukemia, Stage II Chronic Lymphocytic Leukemia, Stage III Chronic Lymphocytic Leukemia, Stage III Small Lymphocytic Lymphoma, Stage IV Chronic Lymphocytic Leukemia, Stage IV Small Lymphocytic Lymphoma

Brief summary

This phase II trial studies how well tositumomab and iodine I 131 tositumomab works in treating patients with chronic lymphocytic leukemia (CLL) or small lymphocytic lymphoma (SLL) that have had their first decrease in or disappearance of signs and symptoms of cancer (first remission). Monoclonal antibodies, such as tositumomab and iodine I 131 tositumomab, may block cancer growth in different ways by targeting certain cells.

Detailed description

PRIMARY OBJECTIVES: I. To estimate the progression-free survival at 2 years following administration of 131I-tositumomab (tositumomab and iodine I 131 tositumomab) in patients with CLL/SLL who achieve a complete remission (CR) or partial remission (PR) with prior therapy. II. To improve the response rate by administering 131I-tositumomab to patients who have achieved a PR not a CR after any prior therapy. III. To eliminate residual disease (documented by flow cytometry or polymerase chain reaction \[PCR\]) using 131I-tositumomab in patients who have achieved a CR after any prior therapy. SECONDARY OBJECTIVES: I. To evaluate the toxicities of 131I-tositumomab in 1st remission patients with previously treated CLL/SLL. OUTLINE: Patients receive tositumomab and iodine I 131 tositumomab intravenously (IV) over 90 minutes on day 0 and then again 7-14 days later over 30-60 minutes. After completion of study treatment, patients are followed up weekly for 3 months, every 3 months for 2 years, every 6 months for 3 years, and then annually thereafter.

Interventions

Sponsors

National Cancer Institute (NCI)
CollaboratorNIH
Fred Hutchinson Cancer Center
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
Yes

Inclusion criteria

* Patients with a diagnosis of cluster of differentiation (CD)20+ CLL/SLL; prior to the first treatment patients with CLL must have been either Rai stage III/IV disease or Rai stage I/II with evidence of disease activity as defined by the National Cancer Institute (NCI) 1996 guidelines, and patients with SLL must have been Stage III or IV per Ann Arbor staging system * Patient has received prior therapy and is in 1st remission with a partial or complete response to treatment * Patients must have no more than 25% of the intratrabecular marrow space involved by leukemia in bone marrow biopsy specimens as assessed microscopically after completion of treatment; bilateral posterior iliac crest core biopsies are required if the percentage of intratrabecular space involved exceeds 10% on a unilateral biopsy; the mean of bilateral biopsies must be no more than 25% * Patient must have consented to participate in the study and signed and dated an appropriate institutional review board (IRB)-approved consent form that conforms to federal and institutional guidelines * Patient must have a Eastern Cooperative Oncology Group (ECOG) performance status of 0, 1 or 2 (0 = fully active, able to carry on all pre-disease performance without restriction; 1 = restricted in physically strenuous activity but ambulatory and ambulatory and able to carry out work of a light or sedentary nature, e.g., light house work, office work; 2 = ambulatory and capable of all self-care but unable to carry out any work activities and is up and about more than 50% of waking hours) * Patient must have an anticipated survival of at least 3 months * Granulocytes \>= 1,500/uL within 14 days of planned dosimetric infusion * Platelets \>= 100,000/uL within 14 days of planned dosimetric infusion * White blood count =\< 20,000/mm\^3 * Serum creatinine \< 2 times upper limit of normal * Total bilirubin \< 2 times upper limit of normal * Aspartate aminotransferase (AST) \< 5 times upper limit of normal * Males and females must agree to use a contraceptive method from enrollment to 6 months after receiving I-131 labeled tositumomab

Exclusion criteria

* Patients who have received prior radiolabeled antibody * Patients with active hemolysis * Patients must not require sustained transfusion support of blood products * Patients in 2nd remission or beyond * Patients who have undergone treatment with either stem cell or bone marrow transplant * Patients with active obstructive hydronephrosis * Patients with evidence of any significant systemic illness, active hepatitis B infection or other active infection at the time of study entry * Patients with New York Heart Association class III or IV heart disease or other serious illness that would preclude evaluation * Patients with known human immunodeficiency virus (HIV) infection * Patients who are pregnant or nursing * Patients with prior malignancy other than CLL/SLL, except for adequately treated skin cancer (basal cell or squamous cell carcinoma), in situ cervical cancer, or other cancer for which the patient has been disease-free for 5 years unless approved by the principal investigator (PI) * Patients with active brain or leptomeningeal involvement by malignancy * Patients who have, in the opinion of the investigator, other medical, social, or psychosocial factors that may negatively impact compliance or their safety by participation in this study

Design outcomes

Primary

MeasureTime frameDescription
Probability of Progression-free Survival (PFS)36 monthsProgression free survival (PFS) is defined as the interval between the first treatment day to the first sign of disease progression. This outcome measures the percentage of participants with PFS at 36 months.
Improved Response Rate After Treatment With 131I-tositumomab for Patients Who Had Evidence of CLL at the End of Initial Chemotherapy3 months after 131I-tositumomab consolidationResponse rates determined using National Cancer Institute (NCI) working group guidelines plus computed tomography (CT) scan criteria. Participants were assessed for response after initial chemotherapy and again 3 months after 131I-tositumomab treatment.Only patients who had less than a complete response (CR) after initial chemotherapy were assessed for improved response after 131I-tositumomab.
Minimal Residual Disease (MRD) by Flow Cytometry or Polymerase Chain Reaction (PCR) in Patients Who Had a Complete Remission (CR) After Any Prior Therapy3 months after 131I-tositumomab consolidation

Secondary

MeasureTime frameDescription
Evaluate Toxicities of 131I-tositumomab48 months (median)Adverse events following treatment of 131I-tositumomab

Countries

United States

Participant flow

Participants by arm

ArmCount
Treatment (Monoclonal Antibody Therapy)
Patients receive tositumomab and iodine I 131 tositumomab IV over 90 minutes on day 0 and then again 7-14 days later over 30-60 minutes. Tositumomab and Iodine I 131 Tositumomab: Give IV Laboratory Biomarker Analysis: Correlative studies
16
Total16

Withdrawals & dropouts

PeriodReasonFG000
Overall StudyLost to Follow-up1

Baseline characteristics

CharacteristicTreatment (Monoclonal Antibody Therapy)
Age, Continuous61 years
CLL or SLL
CLL (Chronic lymphocytic leukemia)
11 Participants
CLL or SLL
SLL (Small lymphocytic leukemia)
5 Participants
Disease status before 131 I-tositumomab
CR (complete response)
4 Participants
Disease status before 131 I-tositumomab
PR (partial response)
12 Participants
Minimal Residual Disease (MRD) status before 131 I-tositumomab
Negative
4 Participants
Minimal Residual Disease (MRD) status before 131 I-tositumomab
Positive
12 Participants
Prior chemotherapy
BR (bendamustine and rituximab)
2 Participants
Prior chemotherapy
FCR(fludaribine, cyclophosphamide and rituximab)
4 Participants
Prior chemotherapy
FR (fludaribine and rituximab)
9 Participants
Prior chemotherapy
R-CHOP
1 Participants
Sex: Female, Male
Female
5 Participants
Sex: Female, Male
Male
11 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
— / —
other
Total, other adverse events
16 / 16
serious
Total, serious adverse events
0 / 16

Outcome results

Primary

Improved Response Rate After Treatment With 131I-tositumomab for Patients Who Had Evidence of CLL at the End of Initial Chemotherapy

Response rates determined using National Cancer Institute (NCI) working group guidelines plus computed tomography (CT) scan criteria. Participants were assessed for response after initial chemotherapy and again 3 months after 131I-tositumomab treatment.Only patients who had less than a complete response (CR) after initial chemotherapy were assessed for improved response after 131I-tositumomab.

Time frame: 3 months after 131I-tositumomab consolidation

Population: Participants who had a partial response (PR) after initial chemotherapy. Response assessed using NCI working group guidelines + CT criteria as described in the protocol.

ArmMeasureCategoryValue (COUNT_OF_PARTICIPANTS)
Treatment (Monoclonal Antibody Therapy)Improved Response Rate After Treatment With 131I-tositumomab for Patients Who Had Evidence of CLL at the End of Initial ChemotherapyParticipants who achieved a CR8 Participants
Treatment (Monoclonal Antibody Therapy)Improved Response Rate After Treatment With 131I-tositumomab for Patients Who Had Evidence of CLL at the End of Initial ChemotherapyParticipants who did not achieve a CR4 Participants
Primary

Minimal Residual Disease (MRD) by Flow Cytometry or Polymerase Chain Reaction (PCR) in Patients Who Had a Complete Remission (CR) After Any Prior Therapy

Time frame: 3 months after 131I-tositumomab consolidation

ArmMeasureCategoryValue (COUNT_OF_PARTICIPANTS)
Treatment (Monoclonal Antibody Therapy)Minimal Residual Disease (MRD) by Flow Cytometry or Polymerase Chain Reaction (PCR) in Patients Who Had a Complete Remission (CR) After Any Prior TherapyNegative MRD status4 Participants
Treatment (Monoclonal Antibody Therapy)Minimal Residual Disease (MRD) by Flow Cytometry or Polymerase Chain Reaction (PCR) in Patients Who Had a Complete Remission (CR) After Any Prior TherapyPositive MRD status0 Participants
Primary

Probability of Progression-free Survival (PFS)

Progression free survival (PFS) is defined as the interval between the first treatment day to the first sign of disease progression. This outcome measures the percentage of participants with PFS at 36 months.

Time frame: 36 months

ArmMeasureValue (NUMBER)
Treatment (Monoclonal Antibody Therapy)Probability of Progression-free Survival (PFS)52 percentage probability
Secondary

Evaluate Toxicities of 131I-tositumomab

Adverse events following treatment of 131I-tositumomab

Time frame: 48 months (median)

ArmMeasureGroupValue (NUMBER)
Treatment (Monoclonal Antibody Therapy)Evaluate Toxicities of 131I-tositumomabGrade 3 anemia1 participants with this toxicity
Treatment (Monoclonal Antibody Therapy)Evaluate Toxicities of 131I-tositumomabGrade 3 or 4 neutropenia13 participants with this toxicity
Treatment (Monoclonal Antibody Therapy)Evaluate Toxicities of 131I-tositumomabGrade 3 or 4 thrombocytopenia8 participants with this toxicity
Treatment (Monoclonal Antibody Therapy)Evaluate Toxicities of 131I-tositumomabHypogammaglobulinemia1 participants with this toxicity
Treatment (Monoclonal Antibody Therapy)Evaluate Toxicities of 131I-tositumomabNeutropenia related sepsis/typhlitis1 participants with this toxicity
Treatment (Monoclonal Antibody Therapy)Evaluate Toxicities of 131I-tositumomabBasal cell carcinoma2 participants with this toxicity
Treatment (Monoclonal Antibody Therapy)Evaluate Toxicities of 131I-tositumomabSquamous cell carcinoma1 participants with this toxicity
Treatment (Monoclonal Antibody Therapy)Evaluate Toxicities of 131I-tositumomabMyelodysplastic syndrome2 participants with this toxicity

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026