Belinostat Therapy With Zidovudine for Adult T-Cell Leukemia-Lymphoma

A Phase II Trial of Belinostat as Consolidation Therapy With Zidovudine for Adult T-Cell Leukemia-Lymphoma

The investigators propose to use Belinostat in combination with AZT as consolidation therapy for the treatment of ATLL.

Study Overview

• Status: Completed
• Conditions: Adult T-cell Leukemia-Lymphoma; ATLL
• Intervention / Treatment: Drug: Belinostat; Drug: Zidovudine; Drug: Interferon-Alfa-2b; Drug: Pegylated Interferon-Alfa-2b; Drug: Lymphodepleting Therapy

• Study Type: Interventional
• Enrollment (Actual): 15
• Phase: Phase 2

Contacts and Locations

Study Locations

• United States
  • Florida
    • Miami, Florida, United States, 33136
      • University of Miami

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years and older (Adult, Older Adult)
• Accepts Healthy Volunteers: No

Description

Inclusion Criteria:

1. Histologically or cytologically documented adult T-cell leukemia/lymphoma (ATLL) with the following characteristics:

   • Any stage of disease,
   • Aggressive types (for definition of ATLL subtypes see Appendix H),
   • Documented presence of ATLL cells in peripheral blood by either morphology, histology, flow cytometry or gene rearrangement studies.

2. One of the following:

   • Initiated AZT/IFNα therapy prior or at the time of enrollment. OR;
   • Received chemotherapy or other antineoplastic drug therapy ≥ 2 weeks prior to enrollment with the exception of dose-reduced vincristine/and or cyclophosphamide, or high dose steroids, administered for cytoreductive purpose. (Note: Continuation of zidovudine and interferon therapy is allowed.).
3. Presence of ATLL based on morphology, histology, flow cytometry, or T-cell clonality in peripheral blood during screening period prior enrollment.
4. Documented Human T-cell lymphotropic virus type 1 (HTLV-1) infection: Documentation may be serologic assay (ELISA) confirmed by Western blot or polymerase chain reaction (PCR).
5. Measurable or evaluable disease, including presence of ATLL by immunophenotyping from either histology or flow cytometry studies, or molecular disease as evidence by T-cell clonality detected by gene rearrangement studies.
6. 18 years of age or older.
7. Karnofsky performance status (KPS) ≥ 50% or Eastern Cooperative Oncology Group (ECOG) performance status ≤ 3

8. Patients must have adequate end organ and bone marrow function as defined below:

   • absolute neutrophil count (ANC) ≥ 1,000 cells/mm3 [Exception: Unless cytopenias are secondary to ATLL]
   • platelets (PLT) ≥ 50,000 cells/mm3 [Exception: Unless cytopenias are secondary to ATLL]

   • Adequate hepatic function:

     • transaminase ≤ 2.5 the institutional upper limit of normal (ULN),
     • total bilirubin ≤ 1.5 x the institutional upper limit of normal (ULN), [Exception: Unless secondary to hepatic infiltration with lymphoma. If the elevated bilirubin is felt to be secondary to Indinavir or Atazavinir therapy (or anti-HIV medications), patients will be allowed to enroll.]
   • Creatinine clearance (CrCl) ≥ 40 mL/min, [Exception: Unless secondary to renal involvement by lymphoma is suspected.]
9. Patients who are human immunodeficiency virus positive (HIV+) are also eligible.
10. Females of childbearing potential (CBP) must have a negative serum pregnancy test within one week of enrollment. Women should avoid pregnancy while receiving study treatment. Males and females must agree to use adequate birth control during participation in this trial and for 3 months after completing therapy.
11. Patients receiving erythropoietin or Granulocyte-colony stimulating factor (G-CSF) from baseline are eligible.

Exclusion Criteria:

1. Patients with progressive disease (after previous chemotherapy or AZT/IFNα) at the time of enrollment.
2. Patients with chronic leukemia with favorable features, or smoldering type ATLL.
3. Patients receiving any other investigational agents within 14 days prior to initiation of study therapy. (Exception: Patients actively receiving IFN-alfa-2b, PEG-IFN-alfa-2b, or similar forms of IFN-alfa are permitted).
4. Uncontrolled inter-current illness including, but not limited to, ongoing or active infection, symptomatic congestive heart failure (CHF), unstable angina pectoris, cardiac arrhythmia, or psychiatric illness/social situations that are likely in the judgment of the Investigator(s) to interfere or limit compliance with study requirements/treatment.
5. Pregnant or breast-feeding women.
6. Known hypersensitivity to histone deacetylases (HDACs), zidovudine, belinostat or any component of the formulation(s).
7. Acute hepatitis or decompensated liver disease unless due to lymphoma. Chronic hepatitis will be required to be on prophylactic treatment during the study if provided liver function test meet criteria listed above without evidence of cirrhosis to be eligible.
8. Concurrent active malignancies, with the exception of in situ carcinoma of the cervix, non-metastatic, non-melanomatous skin cancer, or Kaposi's sarcoma not requiring systemic chemotherapy.
9. Known New York Heart Association (NYHA) Class 3 or 4 heart disease as per Appendix D.
10. Known ejection fraction < 45% or institutional limit of normal range
11. Psychological, familial, sociological or geographical conditions likely in the judgment of the Investigator(s) to interfere or limit compliance with study requirements/treatment.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: N/A
• Interventional Model: Single Group Assignment
• Masking: None (Open Label)

Number of Arms

1

Arms and Interventions

Participant Group / Arm

Intervention / Treatment

Experimental: Belinostat + Zidovudine; Belinostat + Zidovudine (AZT) in combination as consolidation therapy, followed by standard zidovudine (AZT)-based maintenance therapy with optional Interferon-Alfa-2b (IFNalfa-2b) or Pegylated Interferon-Alfa-2b (PEG-IFN-alfa-2b)

Drug: Belinostat; Belinostat will be administered as 1,000 mg/m2 IV infusion over 30 minutes on Days 1- 5 every 21 days (Exception as per FDA-approved Package Insert: In patients known to be homozygous for the UGT1A1*28 allele, the starting belinostat dose must be 750mg/m2) for up to 8 cycles.; Other Names: PXD101; Beleodaq®; Drug: Zidovudine; Zidovudine shall be administered in the outpatient setting as 300 mg tablets orally (PO), three times daily (TID) for 21 days on cycles 1 to 8, followed by maintenance therapy (+/- IFN-alfa) up to the end of Month 12.; Other Names: AZT; Drug: Interferon-Alfa-2b; OPTIONAL: For subjects receiving interferon therapy at baseline, continue Interferon alfa-2b 5 million IU daily or pegylated interferon alfa-2b 1.5 μg/kg once weekly, subcutaneously (SQ) for up to 12 months.; Other Names: IFN-α-2b; Drug: Pegylated Interferon-Alfa-2b; OPTIONAL: For subjects receiving interferon therapy at baseline, continue Interferon alfa-2b 5 million IU daily or pegylated interferon alfa-2b 1.5 μg/kg once weekly, subcutaneously (SQ) for up to 12 months.; Other Names: PEG-IFN-α-2b; Drug: Lymphodepleting Therapy; OPTIONAL: For subjects with any increase in lymphocyte count. Cyclophosphamide administered as 375 mg/m2 via intravenous infusion once during Cycle 1 after Day 5 of Belinostat therapy.; Other Names: Cyclophosphamide

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Number of Participants Achieving Complete Molecular Response in Blood Compartment (CMR)	Number of participants achieving Complete Molecular Response after receiving protocol therapy will be reported. Complete Molecular Response (CMR) is defined as the disappearance of malignant clone(s), as proven by negative T-cell receptor gene rearrangement studies of peripheral blood DNA and bone marrow. CMR will be evaluated based upon T-cell clonality studies to be conducted while subjects are on Belinostat, and while subjects are receiving Zidovudine (AZT)-based maintenance treatment (after Belinostat completion).	From end of cycle 3 until at least end of month 12
Number of Participants Experiencing Treatment-Related Serious Adverse Events and Adverse Events	Number of participants experiencing treatment-related serious adverse events (SAEs), and adverse events (AEs). SAEs and AEs will be assessed by and assigned severity and treatment attribution using the National Cancer Institute Common Terminology Criteria for Adverse Events (NCI CTCAE), Version 4.03.	Up to 13 months

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Number of Participants Achieving Clinical Response	Number of participants achieving complete response (CR) or partial response (PR) to study therapy will be reported. Response is assessed on the basis of clinical, radiologic, molecular and pathologic (i.e. bone marrow) criteria.	Up to 12 months
Failure-Free Survival (FFS) Rate at 12 Months Using Kaplan-Meier Method	The Failure-Free Survival (FFS) rate at 12 months estimated by the Kaplan-Meier method will be reported as a percentage probability of participants alive without documented disease progression, relapse after response or death (by any cause) at 12 months after starting study therapy. FFS is defined as the elapsed time in months from study treatment initiation until documented disease progression, relapse after response or death (by any cause, in the absence of progression). In the failure-free subjects, FFS will be censored at the last documented date of failure-free status.	12 months
Overall Survival (OS) Rate at 12 Months Using Kaplan-Meier Method	The Overall Survival (OS) rate at 12 months estimated by the Kaplan-Meier method will be reported as the percentage probability of survival beyond 12 months. OS is defined as the elapsed time from study treatment initiation to death or date of censoring. Subjects alive or those lost to follow-up will be censored at the last date known to be alive.	12 months
Number of Participants Exhibiting Disruption of HTLV-1 Latency in Vivo	The number of participants exhibiting disruption of Human T-lymphotropic virus 1 (HTLV-1) latency in vivo after receiving Belinostat therapy will be reported. HTLV-1 latency will be evaluated from serum blood samples.	Up to 13 months
Number of Participants Exhibiting Cytotoxic T-Cell Response in Vivo	The number of participants exhibiting cytotoxic T-Cell response in vivo after receiving Belinostat therapy will be reported. Cytotoxic T-Cell response will be evaluated from serum blood samples.	Up to 13 months
HTLV-1 Pro-Viral Load Among Participants	HTVL-1 pro-viral load among study participants will be reported as a measure of HTLV-1 infected reservoirs in vivo after receiving Belinostat therapy. HTLV-1 viral load will be evaluated from serum blood samples	Up to 13 months

Collaborators and Investigators

• Sponsor: University of Miami
• Investigators: Principal Investigator: Juan C Ramos, MD, University of Miami

Study record dates

Study Major Dates

• Study Start (Actual): December 12, 2016
• Primary Completion (Actual): December 31, 2024
• Study Completion (Actual): December 31, 2025

Study Registration Dates

• First Submitted: April 10, 2016
• First Submitted That Met QC Criteria: April 10, 2016
• First Posted (Estimated): April 13, 2016

Study Record Updates

• Last Update Posted (Actual): March 10, 2026
• Last Update Submitted That Met QC Criteria: February 17, 2026
• Last Verified: February 1, 2026

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Neoplasms; Immune System Diseases; Neoplasms by Histologic Type; Hematologic Diseases; Lymphatic Diseases; Lymphoproliferative Disorders; Immunoproliferative Disorders; Leukemia, Lymphoid; Leukemia; Leukemia, T-Cell; Hemic and Lymphatic Diseases; Leukemia-Lymphoma, Adult T-Cell; Organic Chemicals; Heterocyclic Compounds, 1-Ring; Heterocyclic Compounds; Nucleic Acids, Nucleotides, and Nucleosides; Hydrocarbons; Pyrimidine Nucleosides; Pyrimidines; Genome Components; Genome; Genetic Structures; Genetic Phenomena; Phosphoramide Mustards; Nitrogen Mustard Compounds; Mustard Compounds; Hydrocarbons, Halogenated; Phosphoramides; Organophosphorus Compounds; Nucleosides; Deoxyribonucleosides; Thymidine; Dideoxynucleosides; Gene Components; Genes; DNA, Intergenic; Cyclophosphamide; Zidovudine; belinostat; peginterferon alfa-2b; Introns
• Other Study ID Numbers: 20150567

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: Yes
• Studies a U.S. FDA-regulated device product: No
• product manufactured in and exported from the U.S.: No