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Clinical Trial Summary

Background: Adult T-cell leukemia (ATL) is a rare blood cancer. Researchers want to see if a combination of two drugs - recombinant human interleukin 15 (rhIL-15) and alemtuzumab - is a better treatment for ATL. Objectives: To test if giving rhIL-15 combined with alemtuzumab improves the outcome of therapy for ATL. Also, to determine the safe dose of this combination and identify side effects and effects on the immune system. Eligibility: Adults 18 years and older with chronic or acute ATL who have not been helped by other treatments. Design: Participants will be screened with tests that are mostly part of their usual cancer care. They will sign a separate consent form for this. Weeks 1 and 2: Participants will have a total of 10 visits. They will: - Get rhIL-15 under the skin by needle. - Have a physical exam and vital signs measured. - Give blood samples. - Answer questions about their health and their medicines. Week 3: Participants will stay in the clinic. They will: - Get alemtuzumab infusions in a vein through a small catheter on days 1, 2, 3, and 5. - Take medicines to decrease side effects. - Have a computed tomography (CT) scan to evaluate the treatment. - Have a physical exam and vital signs measured. - Give blood samples. Answer questions about their health and medicines. Weeks 4, 5, and 6 will repeat week 3, without the CT scan. Some patients will just have outpatient visits these weeks. After treatment, participants will have follow-up visits every few months for up to 2 years. At these visits, participants will give blood samples and have CT scans.


Clinical Trial Description

Background: - A previous trial alemtuzumab (CAMPATH-1) in patients with chronic, acute and lymphomatous subtype HTLV-1 associated ATL showed appreciable initial activity but no clear long-term impact. - Antibody dependent cellular cytotoxicity (ADCC) with polymorphonuclear neutrophils (PMNs), monocytes and natural killer (NK) cells acting as the effector cells is alemtuzumab s primary in vivo mechanism of action for depleting malignant leukemic or lymphomatous cells. - The immunologic effects of Interleukin-15 (IL-15), a stimulatory cytokine that promotes the differentiation and activation of NK cells, monocytes and long-term cluster of differentiation 8 (CD8+) memory Tcells, has been assessed in several phase I trials in cancer patients. - Administration of recombinant human (rh) IL-15 as an intravenous bolus (IVB), continuous intravenous infusion (CIV) or subcutaneous injections (SC) into adult cancer patients has produced 5 to 50 fold expansion in the number of circulating NK cells at well tolerated doses in these patients. - Preclinical murine lymphoid malignancy models have shown efficacy from the administration of IL-15 and monoclonal antibodies, with improved survival compared to controls. Objective: -To determine the safety, toxicity profile and the maximum tolerated dose (MTD) of s.c. rhIL-15 in combination with standard three times per week IV alemtuzumab treatment. Eligibility: - Age greater than or equal to 18 years old - Eastern Cooperative Oncology Group (ECOG) Performance Status less than or equal to 1 - Diagnosis of adult T-cell leukemia (Human T-cell lymphotropic virus type 1 (HTLV-1) associated, chronic or acute), peripheral T-cell lymphoma (angioimmunoblastic, hepatosplenic, or not otherwise specified), cutaneous T-cell lymphoma (Stage III or IV, with leukemia involvement or erythrodemia), or T-cell prolymphocytic leukemia (T-PLL) - Measurable or evaluable disease - Adequate organ and bone marrow function as defined in the protocol. Design: - This is a single institution nonrandomized Phase I dose escalation study evaluating increasing doses of subcutaneous (SC) rhIL-15 in combination with alemtuzumab using a standard 3 + 3 dose escalation. - Treatment will include s.c. rhIL015 daily Monday-Friday (M-F) weeks 1 and 2 (dose levels 0.5- 2 mcg/kg/dose), followed by intravenous (IV) alemtuzumab beginning in week 3 (escalating doses followed by standard dosing in weeks 4-6). - Up to 30 patients will be enrolled in this study. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT02689453
Study type Interventional
Source National Institutes of Health Clinical Center (CC)
Contact
Status Completed
Phase Phase 1
Start date January 19, 2017
Completion date June 15, 2021

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