Subcutaneous Recombinant Human IL-15 (s.c. rhIL-15) and Alemtuzumab for People With Refractory or Relapsed Chronic and Acute Adult T-cell Leukemia (ATL)

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.

Timeline

Start

2017-01-19

Primary completion

2021-06-15

Completion

2021-06-15

Publications

• Miljkovic MD, Dubois SP, Muller JR, Bryant B, Ma E, Conlon KC, Waldmann TA. Interleukin-15 augments NK cell-mediated ADCC of alemtuzumab in patients with CD52+ T-cell malignancies. Blood Adv. 2023 Feb 14;7(3):384-394. doi: 10.1182/bloodadvances.2021006440.
• Dubois SP, Miljkovic MD, Fleisher TA, Pittaluga S, Hsu-Albert J, Bryant BR, Petrus MN, Perera LP, Muller JR, Shih JH, Waldmann TA, Conlon KC. Short-course IL-15 given as a continuous infusion led to a massive expansion of effective NK cells: implications for combination therapy with antitumor antibodies. J Immunother Cancer. 2021 Apr;9(4):e002193. doi: 10.1136/jitc-2020-002193.
• Waldmann TA, Dubois S, Miljkovic MD, Conlon KC. IL-15 in the Combination Immunotherapy of Cancer. Front Immunol. 2020 May 19;11:868. doi: 10.3389/fimmu.2020.00868. eCollection 2020.

Drugs

Indications