Phase I Study of Recombinant Human IL-15 (rhIL-15) and Mogamulizumab for People With Refractory or Relapsed Adult T-Cell Leukemia and Mycosis Fungoides/Sezary Syndrome

• Status: Active, not recruiting
• Trial end date: 2023-09-01

Summary

Background:

Adult T-cell leukemia/lymphoma (ATLL) and mycosis fungoides/Sezary syndrome (MF/SS) are cancers that form in the T cells, a type of white blood cell that helps with the body s immune response. A combination of drugs might be able to better treat these cancers than existing therapies.

Objective:

To test if the drugs IL-15 and mogamulizumab are safe and effective to treat people with ATLL or MF/SS.

Eligibility:

People ages 18 and older with relapsed ATLL or MF/SS that has not responded to at least one standard treatment

Design:

Participants will be screened with:

Medical history

Physical exam

Blood (including HIV, hepatitis B and C), urine, lung, and heart tests

Bone marrow tests (if needed): A needle inserted in the participant s hip will take a small amount of marrow.

CT, PET and/or MRI scans

Tumor biopsy (if needed): A needle will take out a small piece of the participant s tumor.

Participants will get the study drugs by vein for up to six 28-day cycles. They will get IL-15 the first 5 days of each cycle. They will get mogamulizumab on days 1, 8, 15, and 22 of cycle 1 and days 1 and 15 of the other cycles. They will be hospitalized for 1 week in cycle

1. They may need to get a midline catheter. This is a soft tube put into a vein leading to the heart.

Participants will have repeats of the screening tests throughout the study.

After treatment, participants will have visits every 60 days for 6 months, every 90 days for 2 years, and then every 6 months for 2 years.

• Phase: Phase 1

Details

• Lead Sponsor: National Cancer Institute (NCI)
• Treatments: Antibodies; Mogamulizumab