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Lymphoma, Non-HodgkinPhase 2RIT-II-001NCT01224821

Dosimetry/Validation Study of 131Iodine-Anti B1 (Murine) Radioimmunotherapy for Chemotherapy Refractory Low Grade B Cell Lymphomas and Low Grade Lymphomas That Have Transformed to Higher Grade Histologies

A Phase 2 study testing Tositumomab (Anti-B1 Antibody) and Iodine-131 Tositumomab in people with Lymphoma, Non-Hodgkin, run by GlaxoSmithKline.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

Study RIT-II-001 is a phase II, multicenter study of the safety, tumor and organ dosimetry, dosimetry methods, and efficacy of Iodine-131 Anti-B1 Antibody for the treatment of patients with low-grade or transformed low-grade non-Hodgkin's lymphoma (NHL). Read more about this study

Who is it for?
Ages 18 years and older
Conditions the study is for
Lymphoma, Non-Hodgkin
What is being tested?
Tositumomab (Anti-B1 Antibody) and Iodine-131 Tositumomab
Type of treatment
Injection or infusion
Could I receive a placebo?
No, everyone receives an active treatment
How many people
47 participants
Where
No sites listed yet
Study dates
Dec 1995to May 2008
Phase
Phase 2
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Patients must have a histologically confirmed diagnosis of low-grade non-Hodgkin's B-cell lymphoma or low-grade lymphoma that has transformed to intermediate-, or high-grade lymphoma (transformed lymphoma) according to the Working Formulation for Clinical Usage (IWF A, B, and C).
  • Patients must have evidence that their tumor tissue expresses the CD20 antigen.
  • Patients must have progressive disease of either low-grade or transformed lymphoma within one year of completion of the last chemotherapy regimen administered.
  • Patients must have been previously treated with at least one chemotherapy regimen that included an anthracycline or anthracenedione.
  • Patients must have a performance status of at least 60% on the Karnofsky Scale and anticipated survival of at least three months.
  • Patients must have an absolute granulocyte count of over 1,500 /mm3 and a platelet count above 100,000 /mm3 within seven days of study entry. These blood counts must be sustained without support of hematopoietic cytokines or transfusion of blood products.
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  • Patients must have normal renal function (creatinine less than 2.0 mg/dL) and hepatic function (bilirubin less than 2.0 mg/dL) within seven days of study entry.
  • Patients must have bi-dimensionally measurable or evaluable progressive lymphoma disease (at least a 25% increase in tumor size or new sites of disease when compared to the last best disease response). Progression must have occurred within 12 months of the preceding response.
  • Patients must be at least 18 years of age.
  • Patients must give written informed consent and sign an approved informed consent form prior to study entry.

Who cannot join

  • Patients with more than an average of 25% of the intertrabecular marrow space involved by lymphoma in bone marrow biopsy specimens as assessed microscopically at study entry.
  • Patients who have received cytotoxic chemotherapy, radiation therapy, immunosuppressants, or cytokine treatment within FOUR weeks prior to study entry (six weeks for nitrosourea compounds) or who exhibit persistent clinical evidence of toxicity. The use of steroids must have been discontinued (except maintenance-dose steroids) at least one week prior to study entry and patients must then show evidence of stable or progressive disease.
  • Patients with prior hematologic stem cell transplant following high-dose chemotherapy or chemo/radiotherapy .
  • Patients with obstructive hydronephrosis.
  • Patients with evidence of active infection requiring intravenous antibiotics at the time of study entry.
  • Patients with New York Heart Association class 3 or 4 heart disease or other serious illness that would preclude evaluation.
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  • Patients with prior malignancy other than lymphoma, except for adequately treated skin cancer, in situ cervical cancer, or other cancer for which patient has been disease-free for five years.
  • Patients with known HIV infection.
  • Patients with known brain or leptomeningeal metastases.
  • Patients who are pregnant. Patients of child-bearing potential must undergo a pregnancy test within seven days of study entry. Males and females must agree to use effective contraception during the study.
  • Patients with previous allergic reactions to iodine. This does not include IV contrast materials.
  • Patients who were previously given any monoclonal or polyclonal antibodies of any foreign species for either diagnostic or therapeutic purposes. This includes engineered chimeric and humanized antibodies.
  • Patients who previously received radioimmunotherapy.
  • Patients with progressive disease in a field that has been previously irradiated with more than 3500 cGy.
  • Patients who are on another protocol involving non-approved drugs or biologics.

About this study

Official title: Multicenter, Phase II Dosimetry/Validation Study of 131Iodine-Anti B1 (Murine) Radioimmunotherapy for Chemotherapy Refractory Low Grade B Cell Lymphomas and Low Grade Lymphomas That Have Transformed to Higher Grade Histologies

Study RIT-II-001 is a phase II, multicenter study of the safety, tumor and organ dosimetry, dosimetry methods, and efficacy of Iodine-131 Anti-B1 Antibody for the treatment of patients with low-grade or transformed low-grade non-Hodgkin's lymphoma (NHL). The primary objective of this study is to demonstrate that each site could accurately conduct the whole body dosimetry required for the safe and effective dosing of Iodine-131 Anti-B1 Antibody. Additional objectives of this study are to evaluate the efficacy, dosimetry, and safety of Iodine-131 Anti-B1 Antibody.

Being tested
Tositumomab (Anti-B1 Antibody) and Iodine-131 Tositumomab
Keywords
iodine I 131 tositumomab, anti-B1 Antibody, Bexxar, radioimmunotherapy, tositumomab
Medical subject headings
Lymphoma, Non-Hodgkin

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Tositumomab (Anti-B1 Antibody) and Iodine-131 TositumomabBiological

    Patients receive a dosimetric dose consisting of 450 milligrams (mg) of unlabeled tositumomab (TST, Anti-B1 Antibody) intravenously (IV) followed by 5 milliCurie (mCi) of Iodine I 131 TST IV. Serial whole body sodium iodide probe scintillation counts and whole body conjugate view gamma camera scans obtained approximately 1 hour after administration and then daily for the next 7 days were used to determine the radioactive clearance and the dose of iodine I 131 TST required to deliver a 75 centigray (cGy) therapeutic dose. The therapeutic dose was administered 7-14 days after the dosimetric dose and consisted of TST 450 mg and an activity of Iodine 131 calculated to deliver 75 cGy or 65 cGy of total body irradiation, depending on platelet count, and 35 mg TST.

Study groups in NCT01224821
Study groupRoleWhat they receive
Tositumomab and Iodine I-131 TositumomabExperimentalPatients receive a dosimetric dose consisting of 450 milligrams (mg) of unlabeled tositumomab (TST, Anti-B1 Antibody) intravenously (IV) followed by 5 milliCurie (mCi) of Iodine I 131 TST IV. Serial whole body sodium iodide probe scintillation counts and whole body conjugate view gamma camera scans obtained approximately 1 hour after administration and then daily for the next 7 days were used to determine the radioactive clearance and the dose of iodine I 131 TST required to deliver a 75 centigray (cGy) therapeutic dose. The therapeutic dose was administered 7-14 days after the dosimetric dose and consisted of TST 450 mg and an activity of Iodine 131 calculated to deliver 75 cGy or 65 cGy of total body irradiation, depending on platelet count, and 35 mg TST.
Receives: Biological: Tositumomab (Anti-B1 Antibody) and Iodine-131 Tositumomab

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Number of Participants Who Received the Therapeutic Dose at the Seven Clinical Research Sites

    The dosimetry methods were validated for seven different clinical research sites.

    Measured: Day 1 within one hour of infusion (I) and prior to urination (U); Days 2, 3, and 4 after dosimetric dose (DD) I, following U; Days 6 and 7 after DD I, following U

Secondary outcomes (15)
  1. Number of Participants With the Indicated Therapeutic Doses (TD) (Total Body Dose)

    Based on their platelet count and body weight. Participants received different TDs of TST. For obese participants (weighing more than 137% of their calculated lean body weight), the calculation to determine the administered activity (mCi) was performed using the maximum effective mass (i.e., the minimum of the participant's mass and 137% of their calculated lean body weight). The administered activity (mCi) for participants with a Baseline platelet count of 100001-149999 cells/millimeter cubed (mm^3) was reduced to a 65 cGy total body dose, after any adjustment for obesity.

    Measured: Participants were evaluated for up to 142 months in Study 104731 or were followed in the long-term follow-up study (Study 104526) for up to 136.3 months

  2. Number of Participants (Par.) With Response (CR, CCR, or PR), as Assessed by the Investigator

    Par. with response include those with Complete Response (CR: complete resolution of all disease-related radiological abnormalities and the disappearance of all signs and symptoms related to the disease), Clinical Complete Response (CCR: complete resolution of all disease-related symptoms; residual foci, thought to be residual scar tissue, are present), or Partial Response (PR: >=50% reduction in the sum of the products of the longest perpendicular diameters of all measurable lesions; no new lesions).

    Measured: Participants were evaluated for up to 142 months in Study 104731 or were followed in the long-term follow-up study (Study 104526) for up to 136.3 months

  3. Number of Participants With Confirmed Response (CR, CCR, or PR), as Assessed by the Investigator

    Responses had to be confirmed by 2 separate evaluations occurring >=4 weeks apart. Par. with confirmed response include those with Complete Response (CR: complete resolution of all disease-related radiological abnormalities and the disappearance of all signs and symptoms related to the disease), Clinical Complete Response (CCR: complete resolution of all disease-related symptoms; residual foci, thought to be residual scar tissue, are present), or Partial Response (PR: >=50% reduction in the sum of the products of the longest perpendicular diameters of all measurable lesions; no new lesions).

    Measured: Participants were evaluated for up to 142 months in Study 104731 or were followed in the long-term follow-up study (Study 104526) for up to 136.3 months

  4. Number of Participants With CR and CCR, as Assessed by the Investigator

    The total number of participants with CR and CCR was reported. CR: complete resolution of all disease-related radiological abnormalities and the disappearance of all signs and symptoms related to the disease. Clinical Complete Response: complete resolution of all disease-related symptoms; residual foci, thought to be residual scar tissue, are present.

    Measured: Participants were evaluated for up to 142 months in Study 104731 or were followed in the long-term follow-up study (Study 104526) for up to 136.3 months

  5. Number of Participants With Confirmed CR and CCR, as Assessed by the Investigator

    The total number of participants with CR and CCR was reported. Responses had to be confirmed by 2 separate evaluations occurring >=4 weeks apart. CR: complete resolution of all disease-related radiological abnormalities and the disappearance of all signs and symptoms related to the disease. Clinical Complete Response: complete resolution of all disease-related symptoms; residual foci, thought to be residual scar tissue, are present.

    Measured: Participants were evaluated for up to 142 months in Study 104731 or were followed in the long-term follow-up study (Study 104526) for up to 136.3 months

  6. Duration of Response for All Confirmed Responders (CR, CCR, or PR), as Assessed by the Investigator

    Responses had to be confirmed by 2 separate evaluations occurring >=4 weeks apart. Duration of response is defined as the time from the first documented response until disease progression. Disease progression is defined as a >=25% increase from the nadir value of the sum of the products of the longest perpendicular diameters of all measurable lesions or the appearance of any new lesion. Individual lesions must be >2 cm in diameter by radiographic evaluation or >1 cm in diameter by physical examination.

    Measured: Participants were evaluated for up to 142 months in Study 104731 or were followed in the long-term follow-up study (Study 104526) for up to 136.3 months

  7. Duration of Response for All Unconfirmed Responders (CR, CCR, or PR), as Assessed by the Investigator

    Duration of response is defined as the time from the first documented response until disease progression. Disease progression is defined as a >=25% increase from the nadir value of the sum of the products of the longest perpendicular diameters of all measurable lesions or the appearance of any new lesion. Individual lesions must be >2 cm in diameter by radiographic evaluation or >1 cm in diameter by physical examination.

    Measured: Participants were evaluated for up to 142 months in Study 104731 or were followed in the long-term follow-up study (Study 104526) for up to 136.3 months

  8. Duration of Response for All Confirmed Complete Responders, as Assessed by the Investigator

    Responses had to be confirmed by 2 separate evaluations occurring >=4 weeks apart. Duration of response is defined as the time from the first documented response until disease progression. Disease progression is defined as a >=25% increase from the nadir value of the sum of the products of the longest perpendicular diameters of all measurable lesions or the appearance of any new lesion. Individual lesions must be >2 cm in diameter by radiographic evaluation or >1 cm in diameter by physical examination.

    Measured: Participants were evaluated for up to 142 months in Study 104731 or were followed in the long-term follow-up study (Study 104526) for up to 136.3 months

  9. Duration of Response for All Unconfirmed Complete Responders, as Assessed by the Investigator

    Duration of response is defined as the time from the first documented response until disease progression. Disease progression is defined as a >=25% increase from the nadir value of the sum of the products of the longest perpendicular diameters of all measurable lesions or the appearance of any new lesion. Individual lesions must be >2 cm in diameter by radiographic evaluation or >1 cm in diameter by physical examination.

    Measured: Participants were evaluated for up to 142 months in Study 104731 or were followed in the long-term follow-up study (Study 104526) for up to 136.3 months

  10. Duration of Response for All Confirmed Clinical Complete Responders, as Assessed by the Investigator

    Responses had to be confirmed by 2 separate evaluations occurring >=4 weeks apart. Duration of response is defined as the time from the first documented response until disease progression. Disease progression is defined as a >=25% increase from the nadir value of the sum of the products of the longest perpendicular diameters of all measurable lesions or the appearance of any new lesion. Individual lesions must be >2 cm in diameter by radiographic evaluation or >1 cm in diameter by physical examination.

    Measured: Participants were evaluated for up to 142 months in Study 104731 or were followed in the long-term follow-up study (Study 104526) for up to 136.3 months

  11. Duration of Response for All Unconfirmed Clinical Complete Responders, as Assessed by the Investigator

    Duration of response is defined as the time from the first documented response until disease progression. Disease progression is defined as a >=25% increase from the nadir value of the sum of the products of the longest perpendicular diameters of all measurable lesions or the appearance of any new lesion. Individual lesions must be >2 cm in diameter by radiographic evaluation or >1 cm in diameter by physical examination.

    Measured: Participants were evaluated for up to 142 months in Study 104731 or were followed in the long-term follow-up study (Study 104526) for up to 136.3 months

  12. Median Time to Treatment Failure for All Participants

    Time to treatment failure is defined as the length of time from the date of enrollment to the first incidence of treatment withdrawal, study removal, progression, and/or alternative therapy for the participant's lymphoma, or death.

    Measured: Participants were evaluated for up to 142 months in Study 104731 or were followed in the long-term follow-up study (Study 104526) for up to 136.3 months

  13. Overall Survival

    Overall survival is defined as the time from the treatment start date to the date of death from any cause. Time to death is the time from the dosimetric dose to the date of death.

    Measured: Participants were evaluated for up to 142 months in Study 104731 or were followed in the long-term follow-up study (Study 104526) for up to 136.3 months

  14. Time to Disease Progression or Death for Responders, as Assessed by the Investigator

    Progression-free survival or time to progression is defined as the time from the dosimetric dose to the first documented occurrence of disease progression or death.

    Measured: Participants were evaluated for up to 142 months in Study 104731 or were followed in the long-term follow-up study (Study 104526) for up to 136.3 months

  15. Time to Disease Progression or Death for All Participants, as Assessed by the Investigator

    Progression-free survival or time to progression is defined as the time from the dosimetric dose to the first documented occurrence of disease progression or death.

    Measured: Participants were evaluated for up to 142 months in Study 104731 or were followed in the long-term follow-up study (Study 104526) for up to 136.3 months

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted20 Oct 2010 (estimated)
  2. Study startDec 1995
  3. Primary completionNov 1997
  4. Study completionMay 2008

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 2
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrolment
47 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT01224821
Sponsor's protocol ID
104731
Acronym
RIT-II-001
Status last verified
Oct 2016
First submitted
19 Oct 2010
Last updated
12 Dec 2016
Individual data sharing
Yes: Patient-level data for this study will be made available through www.clinicalstudydatarequest.com following the timelines and process described on this site.

Questions about this trial

What is this clinical trial studying?

A Phase 2 study testing Tositumomab (Anti-B1 Antibody) and Iodine-131 Tositumomab in people with Lymphoma, Non-Hodgkin, run by GlaxoSmithKline.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 10 inclusion and 15 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 12 Dec 2016. Status can change between updates, so confirm with the study contact before making plans.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 17 Apr 2012). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Number of Participants Who Received the Therapeutic Dose at the Seven Clinical Research Sites (time frame: Day 1 within one hour of infusion (I) and prior to urination (U); Days 2, 3, and 4 after dosimetric dose (DD) I, following U; Days 6 and 7 after DD I, following U). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 12 Dec 2016.

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