This randomized pilot clinical trial studies melanoma antigen recognized by T-cells 1 (MART-1) antigen with or without toll-like receptor 4 (TLR4) agonist glucopyranosyl lipid A-stable oil-in-water emulsion (GLA-SE) in treating patients with stage II-IV melanoma that has been removed by surgery. Vaccines made from MART-1a peptide or antigen may help the body build an effective immune response to kill tumor cells. Giving TLR4 agonist GLA-SE with MART-1 antigen may help increase the immune response to MART-1a antigen.
PRIMARY OBJECTIVES: I. Evaluate the immune response of each immunization regimen to determine an optimal regimen in terms of immune response to recommend for phase II testing. SECONDARY OBJECTIVES: I. Evaluate the adverse events profile of each immunization regimen. TERTIARY OBJECTIVES: I. Describe the immunological efficacy of the vaccine preparations as measured by the frequency and interferon (IFN) gamma production of peptide-specific cytotoxic T lymphocytes (CTL). OUTLINE: Patients are randomized to 1 of 2 treatment arms. ARM I: Patients receive MART-1 antigen and TLR4 antagonist GLA-SE intramuscularly (IM) on day 1. Treatment repeats every 21 days for up to 3 courses in the absence of disease progression or unacceptable toxicity. ARM II: Patients receive MART-1 antigen IM on day 1. Treatment repeats every 21 days for up to 3 courses in the absence of disease progression or unacceptable toxicity. After completion of study treatment, stage II patients are followed up at 10 weeks and then at 6, 12, 18, and 24 months and stage III-IV patients are followed up at 3, 6, 9, 12, 15, 18, 21, and 24 months.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
23
Mayo Clinic
Rochester, Minnesota, United States
Immune response
A patient is considered to have achieved an immune response if there is a 2-fold or more increase from pre-treatment levels in the absolute number of vaccine peptide-specific (MART-1a-specific) CTL as measured by tetramer staining, or if the frequency of MART-1a-specific CTL is initially undetectable (\< 0.05% of CD8 T cells) and becomes detectable during the vaccine treatment period. The proportion of successes will be estimated and the exact binomial 95% confidence intervals for the true immune response rate will be calculated.
Time frame: Up to 24 months
Adverse event rate, graded according to the National Cancer Institute Common Terminology Criteria for Adverse Events version 4.0
The maximum grade for each type of adverse event will be recorded for each patient, and frequency tables will be reviewed to determine patterns. Additionally, the relationship of the adverse event(s) to the study treatment will be taken into consideration.
Time frame: Up to 24 months
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