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Immunotoxin in Treating Patients With Leukemia or Lymphoma

This study has been completed.
Information provided by:
National Cancer Institute (NCI) Identifier:
First received: November 1, 1999
Last updated: April 28, 2015
Last verified: March 2003

RATIONALE: Immunotoxins can locate cancer cells and either kill them or deliver cancer-killing substances to them without harming normal cells.

PURPOSE: Phase I trial to study the effectiveness of LMB-2 immunotoxin in treating patients who have leukemia or lymphoma.

Condition Intervention Phase
Biological: LMB-2 immunotoxin
Phase 1

Study Type: Interventional
Study Design: Primary Purpose: Treatment

Resource links provided by NLM:

Further study details as provided by National Cancer Institute (NCI):

Study Start Date: April 1996
Detailed Description:


  • Assess the therapeutic efficacy and toxicity of the recombinant immunotoxin LMB-2, an anti-Tac murine monoclonal antibody fragment conjugated to a truncated portion of Pseudomonas exotoxin, in patients with Tac-expressing leukemias and lymphomas.
  • Define the pharmacokinetics of LMB-2, including the terminal elimination serum half-life, area under the curve, and volume of distribution.
  • Evaluate, in a preliminary manner, the immunogenicity of LMB-2 in these patients.
  • Determine the effect of LMB-2 on various components of the circulating cellular immune system.

OUTLINE: This is a dose escalation study.

Patients receive LMB-2 immunotoxin IV over 30 minutes on days 1, 3, and 5. Treatment repeats every 15-21 days for up to 10 courses in the absence of disease progression, neutralizing antibodies, or unacceptable toxicity.

Cohorts of 3-6 patients each receive escalating doses of LMB-2 immunotoxin until the maximum tolerated dose (MTD) is determined. The MTD is defined as the dose at which no more than 1 patient experiences dose limiting toxicity.

PROJECTED ACCRUAL: A maximum of 40 patients will be accrued for this study.


Ages Eligible for Study:   18 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No


  • Histologically confirmed Hodgkin's disease, non-Hodgkin's lymphoma, or leukemia in one of the following categories:

    • Adult T-cell leukemia or lymphoma (ATL)

      • No smoldering ATL
      • No limitation on prior therapy
    • Cutaneous T-cell lymphoma (CTCL)

      • Stages IB-III and failed at least 1 standard therapy
      • Stage IV regardless of prior therapy
    • Stages I-IV peripheral T-cell lymphoma

      • Relapsed after standard chemotherapy
      • Ineligible for or refused salvage chemotherapy or bone marrow transplantation (BMT)
    • B-cell non-Hodgkin's lymphoma (NHL) of any histology

      • Indolent stages II-IV NHL

        • Failed at least 1 standard therapy
        • Disease symptomatic and requiring treatment
      • Aggressive NHL

        • Relapsed after standard chemotherapy
        • Ineligible for or refused salvage chemotherapy or BMT
    • Chronic lymphocytic leukemia (CLL)

      • Rai stages III and IV or Binet stage C
      • Failed standard therapy and at least 1 salvage chemotherapy
    • Primary B-cell prolymphocytic leukemia or prolymphocytic transformation of CLL

      • Failed standard therapy and at least 1 salvage chemotherapy
    • Hairy cell leukemia

      • Failed standard and salvage chemotherapy
      • Ineligible for or refused further salvage chemotherapy or BMT
    • Acute myelogenous leukemia

      • Failed standard chemotherapy
      • Ineligible for or refused salvage chemotherapy or BMT
    • Stages II-IV Hodgkin's disease

      • Failed standard chemotherapy
      • Ineligible for curative salvage radiotherapy or chemotherapy
      • Ineligible for or refused BMT
    • Patients with leukemias or lymphomas not easily classified in above categories who have failed standard therapy and are ineligible for or have refused bone marrow transplant
  • Evidence of interleukin-2 receptor-alpha (IL2Ra) expression by one of the following:

    • Greater than 10% of malignant cells reactive with anti-Tac by immunohistochemistry
    • Greater than 10% of malignant cells from a particular site positive by FACS
    • Greater than 400 IL2Ra sites per malignant cell by radiolabeled anti-Tac binding
    • Soluble IL2Ra level greater than 1,000 U/mL (normal geometric mean 235, with 95% confidence levels of 112-502 U)
    • Hodgkin's disease with measurable disease not amenable to biopsy
  • No CNS disease requiring treatment

    • Malignant cells in CSF allowed if judged not to represent clinically significant leukemic or lymphomatous meningitis (as in CSF contamination by blood)



  • 18 and over

Performance status:

  • Karnofsky 50-100%

Life expectancy:

  • Greater than 2 months


  • Absolute neutrophil count greater than 1,000/mm3*
  • Platelet count greater than 50,000/mm3* NOTE: *nonleukemic patients


  • AST and ALT less than 5 times normal


  • Creatinine less than 2.0 mg/dL OR
  • Creatinine clearance greater than 50 mL/min


  • FEV1, TLC, and DLCO greater than 50% of predicted if pulmonary or mediastinal involvement with tumor greater than one third of total thoracic diameter


  • HIV negative
  • Not pregnant
  • Fertile patients must use effective contraception
  • Serum must neutralize no more than 75% LMB-2 in tissue culture


Biologic therapy:

  • See Disease Characteristics
  • At least 3 weeks since prior interferon


  • See Disease Characteristics
  • At least 3 weeks since prior cytotoxic chemotherapy
  • At least 3 weeks since prior retinoids
  • No concurrent chemotherapy

Endocrine therapy:

  • No concurrent corticosteroids unless begun at least 3 weeks prior to entry and dose not increased during 3 weeks prior to entry


  • See Disease Characteristics
  • At least 3 weeks since prior whole-body electron beam radiotherapy
  • Other radiotherapy allowed within 3 weeks of entry provided less than 10% of marrow irradiated and measurable disease exists outside radiation port


  • Not specified


  • See Disease Characteristics
  • At least 3 weeks since any prior systemic therapy
  • No other concurrent investigational agents
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT00002765

United States, Maryland
Laboratory of Molecular Biology
Bethesda, Maryland, United States, 20892
Medicine Branch
Bethesda, Maryland, United States, 20892
Sponsors and Collaborators
National Cancer Institute (NCI)
Study Chair: Robert Kreitman, MD National Cancer Institute (NCI)
  More Information

Publications: Identifier: NCT00002765     History of Changes
Obsolete Identifiers: NCT00001501
Other Study ID Numbers: CDR0000064729
Study First Received: November 1, 1999
Last Updated: April 28, 2015

Keywords provided by National Cancer Institute (NCI):
recurrent adult Hodgkin lymphoma
stage IV cutaneous T-cell non-Hodgkin lymphoma
recurrent cutaneous T-cell non-Hodgkin lymphoma
Waldenström macroglobulinemia
recurrent adult acute myeloid leukemia
recurrent adult acute lymphoblastic leukemia
relapsing chronic myelogenous leukemia
refractory chronic lymphocytic leukemia
refractory hairy cell leukemia
recurrent small lymphocytic lymphoma
recurrent grade 1 follicular lymphoma
recurrent grade 2 follicular lymphoma
recurrent grade 3 follicular lymphoma
recurrent adult diffuse small cleaved cell lymphoma
recurrent adult diffuse mixed cell lymphoma
recurrent adult diffuse large cell lymphoma
recurrent adult immunoblastic large cell lymphoma
recurrent adult lymphoblastic lymphoma
recurrent adult Burkitt lymphoma
stage I adult T-cell leukemia/lymphoma
stage II adult T-cell leukemia/lymphoma
stage III adult T-cell leukemia/lymphoma
stage IV adult T-cell leukemia/lymphoma
recurrent adult T-cell leukemia/lymphoma
prolymphocytic leukemia
recurrent mantle cell lymphoma
stage IV mycosis fungoides/Sezary syndrome
recurrent mycosis fungoides/Sezary syndrome
recurrent marginal zone lymphoma
extranodal marginal zone B-cell lymphoma of mucosa-associated lymphoid tissue

Additional relevant MeSH terms:
Neoplasms by Histologic Type
Lymphoproliferative Disorders
Lymphatic Diseases
Immunoproliferative Disorders
Immune System Diseases
Immunologic Factors
Physiological Effects of Drugs processed this record on May 23, 2017