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LeukemiaPhase 2NCT00493129

Ontak (Denileukin Diftitox) in Patients With Systemic Mastocytosis (SM)

A Phase 2 study testing Ontak (Denileukin Diftitox) in people with Leukemia and Systemic Mastocytosis, run by M.D. Anderson Cancer Center at 1 site in United States.

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

Primary Objective: 1. To assess the response rate of ONTAK in Systemic Mastocytosis (SM) patients. Secondary Objectives: 1. To assess the safety of ONTAK in SM patients. 2. To evaluate the time to progression and duration of response following treatment with ONTAK. Read more about this study

Who is it for?
Any age
Conditions the study is for
Leukemia, Systemic Mastocytosis
What is being tested?
Ontak (Denileukin Diftitox)
Type of treatment
Injection or infusion
Could I receive a placebo?
No, everyone receives an active treatment
How many people
8 participants
Where
1 siteUnited States
Study dates
Jul 2004to Aug 2007
Phase
Phase 2
Are there results?
None posted in the registry

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 Any age
  • All sexes
  • No healthy volunteers
  • Child, Adult, Older adult

Who may be able to join

  • Patients with SM, including mast cell leukemia (MCL).
  • ECOG Performance Status (PS) 0-3
  • Adequate renal function (indicated by serum creatinine </= 2.5 mg/dL); adequate hepatic function (indicated by ALT </= 3 * upper limit of normal; total bilirubin </= 3 * upper limit of normal; and albumin >/= 2.8 g/dL).
  • Provide written informed consent.
  • Female patients of childbearing potential must have a negative pregnancy test within 14 days prior to first dose of study drug, and must agree to use an effective means of contraception following the pregnancy test, throughout the study and for at least three weeks after their last treatment on protocol.

Who cannot join

  • History of hypersensitivity to diphtheria toxin.
  • Active cardiovascular disease as defined by New York Heart Association (NYHA) Class III-IV categorization.
  • Serious intercurrent medical illnesses or active infections requiring parenteral antibiotics that would interfere with the ability of the patient to carry out the treatment program.
  • Concurrent malignancy (other than resected basal or squamous cell skin cancers or in-situ cervical cancer). Unless, patient has SM-associated clonal hematologic disease that does not require therapy, as judged by treating physician and approved by principal investigator.
  • Female patients who are pregnant or breastfeeding.
  • No chemotherapy, radiotherapy, immunotherapy, hormonal anticancer therapy, or experimental medications (including approved drugs tested in an investigational setting) may be administered while a patient is a participant in this protocol.

Trial locations and contacts

1 site in 1 country.

United States1 site
  • The University of Texas M.D. Anderson Cancer Center

    Houston, Texas, 77030

Other trials in United States

About this study

Official title: ONTAK (Denileukin Diftitox) in Patients With Systemic Mastocytosis

Primary Objective:

  1. To assess the response rate of ONTAK in Systemic Mastocytosis (SM) patients.

Secondary Objectives:

  1. To assess the safety of ONTAK in SM patients.
  2. To evaluate the time to progression and duration of response following treatment with ONTAK.
Read the detailed description

Denileukin diftitox has been used for the treatment of a variety of disorders, in particular, malignant lymphoma, another blood-related disease. Denileukin diftitox is believed to be able to specifically attach to and kill malignant mast cells.

Before you can start treatment on this study, you will have what are called "screening tests". These tests will help the doctor decide if you are eligible to take part in the study. You will have blood (around 2 teaspoons) and bone marrow samples collected. To collect a bone marrow sample, an area of the hip bone is numbed with anesthetic and a small amount of bone marrow is withdrawn through a large needle. These samples will be used for tests to confirm the diagnosis of the disease. Women who are able to have children must have a negative blood pregnancy test.

If you are found to be eligible, you will receive denileukin diftitox as an injection by vein once a day for 5 days in a row. This will be repeated every 3 weeks (1 cycle). You will receive treatment on an outpatient basis. Treatment will continue as long as there is evidence that therapy is affecting the disease and is beneficial to you. If the disease gets worse or you experience any intolerable side effects, you will be taken off the study and your doctor will discuss other treatment options with you.

During treatment you will have blood (around 1 teaspoon) collected twice during every 3-week period. You will also have bone marrow samples collected every 3 months during the treatment.

After the end of treatment, blood and bone marrow samples will be collected every 3 months until the disease gets worse or you start a different therapy. The blood and bone marrow samples will be used to look at response to therapy.

This is an investigational study. Denileukin diftitox has been approved by the FDA for the treatment of skin T-cell lymphoma and is commercially available. The use of denileukin diftitox in this study is investigational. You will be provided denileukin diftitox free of charge. Up to 25 participants will take part in this study. All be enrolled at M. D. Anderson.

Being tested
Ontak (Denileukin Diftitox)
Keywords
Systemic Mastocytosis, SM, Mast Cell Leukemia, Leukemia, Denileukin Diftitox, Ontak
Medical subject headings
Leukemia, Mastocytosis, Systemic, Leukemia, Mast-Cell

What participants receive

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

  • Ontak (Denileukin Diftitox)Drug

    Also called Denileukin Diftitox

    9 µg/kg by vein Days 1-5 of a 21 day cycle.

Study groups in NCT00493129
Study groupRoleWhat they receive
OntakExperimentalOntak administered intravenously on Days 1-5 at the dose of 9 µg/kg/day, with a rest period from Days 6-21.
Receives: Drug: Ontak (Denileukin Diftitox)

What is being measured

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

  1. Objective Response Rate

    Bone marrow samples used to look at response to therapy collected every 3 months until disease progression or different therapy started. Clinical efficacy assessed as objective response (major and partial response) for responding patients analyzed by the Kaplan-Meier method.

    Measured: 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 posted28 Jun 2007 (estimated)
  2. Study startJul 2004
  3. Primary completionAug 2007
  4. Study completionAug 2007

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
8 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT00493129
Sponsor's protocol ID
2004-0142
Status last verified
Feb 2012
First submitted
26 Jun 2007
Last updated
8 Feb 2012
Results posted
No
Data monitoring committee
No

Questions about this trial

What is this clinical trial studying?

A Phase 2 study testing Ontak (Denileukin Diftitox) in people with Leukemia and Systemic Mastocytosis, run by M.D. Anderson Cancer Center at 1 site in United States.

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 5 inclusion and 6 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 8 Feb 2012. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

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?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

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?

Objective Response Rate (time frame: 3 months). 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 8 Feb 2012.

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