Zidovudine, Interferon Alfa-2b, and PEG-Interferon Alfa-2b in Treating Patients With Human T-Cell Lymphotropic Virus Type 1-Associated Adult T-Cell Leukemia/Lymphoma
Information source: University of Miami Sylvester Comprehensive Cancer Center
Information obtained from ClinicalTrials.gov on October 04, 2010
Link to the current ClinicalTrials.gov record.
Condition(s) targeted: Lymphoma; Precancerous/Nonmalignant Condition
Intervention: PEG-interferon alfa-2b (Biological); Interferon alfa-2b (Biological); Valproic Acid (Drug); Zidovudine (Drug); Molecular Evaluation/Analysis of Malignant Clones of ATLL (Genetic); NF-kB Inhibition (Genetic)
Sponsored by: University of Miami Sylvester Comprehensive Cancer Center
Official(s) and/or principal investigator(s):
Juan Carlos Ramos, MD, Principal Investigator, Affiliation: University of Miami Sylvester Comprehensive Cancer Center
RATIONALE: Human T-cell lymphotropic virus type 1 can cause cancer. Zidovudine is an
antiviral drug that acts against the human T-cell lymphotropic virus type 1. Giving
zidovudine, interferon alfa-2b, and PEG-interferon alfa-2b together may stimulate the immune
system and slow down or keep the cancer cell from growing.
PURPOSE: This clinical trial is studying how well giving zidovudine together with interferon
alfa-2b and PEG-interferon alfa-2b works in treating patients with human T-cell lymphotropic
virus type 1-associated adult T-cell leukemia/lymphoma.
Official title: Prospective Study of the Molecular Characteristics of Sensitive and Resistant Disease in Patients With HTLV-I Associated Adult T Cell Leukemia Treated With Zidovudine (AZT) Plus Interferon Alpha-2b
Study design: Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Treatment
To investigate whether the lack of IRF-4 and/or c-Rel is associated with response (CR or PR) to Zidovudine (AZT) and IFN alpha-2b therapy.
Presence of minimal residual disease at 3 and 6 months of maintained remission and at 1 year post initiation of therapy
To analyze clones from patients who relapse to determine whether antiviral escape is associated with expression of IRF-4, c-Rel or other molecular events (p53, p16 mutations) including expansion of novel clones.
To investigate whether AZT functions as an inhibitor of NF-kB in vivo by analyzing serially collected leukemic samples during the first 48 hours of treatment with AZT only.
- To investigate whether the lack of IRF-4 and/or c-Rel is associated with response
(complete response or partial response) to zidovudine, recombinant interferon alfa-2b,
and PEG-interferon alfa-2b therapy in patients with human T-cell lymphotropic virus
type 1-associated adult T-cell leukemia/lymphoma (ATLL).
- To analyze, in responders, the presence of any remaining detectable clones of ATLL
(minimal residual disease) at 3 and 6 months of maintained remission on antivirals and
at one-year post-initiation of therapy in order to determine whether this represents
persistence of the original tumor clone or another variant.
- To analyze clones from patients who relapse to determine whether antiviral escape is
associated with expression of IRF-4, c-Rel, or other molecular events (p53, p16
mutations) including expansion of novel clones.
- To investigate whether zidovudine functions as an inhibitor of NF-κB in vivo by
analyzing serially collected leukemic samples during the first 48 hours of treatment
with zidovudine alone.
- To determine the effect of valproic acid therapy on persistent clonal disease in
patients in complete or stable partial remission.
- To determine the failure-free survival and overall survival of these patients.
OUTLINE: This is a multicenter study.
- Induction therapy: Patients receive zidovudine IV twice daily on days 1-14, and
recombinant interferon alfa-2b IV twice daily on days 3-14. Patients achieving clinical
complete response (CR) proceed to part 1 maintenance therapy; patients achieving
partial response (PR) receive another 7 days of zidovudine and recombinant interferon
alfa-2b and then proceed to part 1 maintenance therapy.
- Part 1 maintenance therapy: Patients receive oral zidovudine twice daily and
PEG-interferon alfa-2b subcutaneously (SC) once weekly, beginning on day 14 or 21 and
continue to day 60. Patients are evaluated after completion of part 1 maintenance
therapy and proceed to part 2 maintenance therapy.
- Part 2 maintenance therapy: Patients achieving CR with undetectable clonal disease
proceed to group A; patients achieving CR with minimal residual disease (by PCR) or PR
proceed to group B.
- Group A: Patients receive oral zidovudine twice daily and PEG-interferon alfa-2b
SC once weekly. Treatment continues in the absence of disease progression or
- Group B: Patients receive oral zidovudine twice daily and PEG-interferon alfa-2b
SC once weekly for 12 weeks and undergo reevaluation. Patients in continued CR
with minimal residual disease or stable PR receive oral valproic acid twice daily,
PEG-interferon alfa-2b SC once weekly, and oral zidovudine twice daily for 6
months. At that point (month 9) patients with no detectable clonal disease
continue their previous treatment, while patients with minimal residual disease
receive PEG-interferon alfa-2b SC and oral zidovudine twice daily in the absence
of disease progression or unacceptable toxicity.
Blood samples are collected at baseline, days 1 and 2, and months 3, 6, and 12 for protein,
genomic DNA, and RNA analysis. Baseline molecular characteristics of the tumor and tumor
response to treatment is assessed.
After completion of study treatment, patients are followed every 3 months for 1 year.
Minimum age: 18 Years.
Maximum age: N/A.
- Histologically or cytologically confirmed diagnosis of adult T-cell leukemia/lymphoma
- Any stage disease
- Leukemic types only (smoldering, chronic, or acute)
- Tumors must be CD3 positive (> 50% cells express CD3)
- Documented human T-cell lymphotropic virus type 1 (HTLV-1) infection by serologic
assay (ELISA, western blot) and confirmed to be HTLV-1 rather than HTLV-2 by
differential western blot or PCR
- Measurable or evaluable disease
- Karnofsky performance status 50-100%
- ANC ≥ 1,500/mm^3
- Platelet count ≥ 50,000/mm^3 unless cytopenias are secondary to adult T-cell
- Transaminases ≤ 7 times upper limit of normal unless secondary to hepatic
infiltration with lymphoma
- Total bilirubin < 2. 0 mg/dL unless secondary to hepatic infiltration with lymphoma
(if secondary to indinavir or atazanavir therapy, patients are eligible provided
total bilirubin ≤ 3. 5 mg/dL and that direct bilirubin is normal)
- Creatinine < 2. 0 mg/dL
- Not pregnant or nursing
- Negative pregnancy test
- Fertile patients must use effective contraception during study treatment
- No grade 3 or 4 cardiac failure
- Ejection fraction ≥ 50%
- No concurrent uncontrolled illness including, but not limited to, any of the
- Ongoing or active infection
- Symptomatic congestive heart failure
- Unstable angina pectoris
- Cardiac arrhythmia
- Psychiatric illness or social situations that would limit compliance with study
- No concurrent active malignancy except for in situ carcinoma of the cervix;
non-metastatic, non-melanomatous skin cancer; or Kaposi's sarcoma not requiring
- No autoimmune or viral hepatitis or decompensated liver disease unless due to
- No hypersensitivity to recombinant interferon alfa-2b, PEG-interferon alfa-2b,
zidovudine, or any component of the formulation
- No psychological, familial, sociological, or geographical conditions precluding study
treatment and/or medical follow-up
- HIV positivity allowed
PRIOR CONCURRENT THERAPY:
- Patients already receiving erythropoietin or filgrastim (G-CSF) allowed
- Concurrent antiretroviral therapy in HIV-positive patients allowed
- No prior zidovudine and/or interferon
- No other concurrent investigational agents
Locations and Contacts
University of Miami Sylvester Comprehensive Cancer Center - Miami, Miami, Florida 33136, United States; Recruiting
University of Miami Sylvester Comprehensive Cancer Center Clin, Phone: 866-574-5124, Email: Sylvester@emergingmed.com
Clinical trial summary from the National Cancer Institute's PDQ® database
Starting date: November 2007
Last updated: September 22, 2010