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About
This phase II trial is studying how well rosiglitazone works in preventing oral cancer in patients with oral leukoplakia. Chemoprevention is the use of certain drugs to keep cancer from forming, growing, or coming back. The use of rosiglitazone may keep cancer from forming in patients with oral leukoplakia
Full description
PRIMARY OBJECTIVES:
I. To determine the rate of clinical response of oral premalignant lesions (OPL) to 12 weeks of therapy with rosiglitazone (Avandia), 8 mg daily, defined as greater than or equal to 50% reduction in the measured product of perpendicular dimension of the target lesion, or improvement in the degree of dysplasia.
SECONDARY OBJECTIVES:
I. To determine the rate and degree of change of putative biomarkers of rosiglitazone efficacy including:
COX-2, cyclin D1, Ki-67, p21/waf1, PPAR gamma, K1 cytokeratin, involucrin, transglutaminase expressions, and TUNEL.
II. To estimate the correlation between DNA ploidy measurements in OPL with clinical response and or response of biomarkers to rosiglitazone therapy, and to estimate the efficacy of rosiglitazone therapy to normalize aberrant DNA ploidy in OPL.
III. To thoroughly assess smoking patterns among trial participants and to examine the relationship of smoking to treatment response.
IV. To assess the safety of this agent in short-term use in this population.
OUTLINE: This is a multicenter, open-label, nonrandomized study.
Patients receive oral rosiglitazone once daily. Treatment continues for 12 weeks in the absence of unacceptable toxicity.
After completion of study treatment, patients are followed at 1 week.
Enrollment
Sex
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Volunteers
Inclusion criteria
Males or females with a suspected or histologically confirmed index oral premalignant lesion (excluding carcinoma in situ), 12mm or greater in size that has not been biopsied in the past 6 weeks; each index lesion must be either a:
The subject's life expectancy is > 12 weeks and Karnofsky performance score is 70-100%
Hemoglobin and hematocrit levels above the lower limit of normal
White blood cells >= 3,000/uL
Platelets >= 125,000/uL
Total bilirubin =< 1.5 x ULN
AST (SGOT)/ALT (SGPT) =< 1.5 x ULN
BUN and serum creatinine =< 1.5 x ULN
LDH =< 1.5 x ULN
If the subject is female and of childbearing potential (women are considered not of childbearing potential if they are at least two years postmenopausal and/or surgically sterile), she:
The subject has discontinued any other oral cancer chemopreventive therapy at least 12 weeks prior to the Baseline visit and all toxicities have been fully resolved; daily aspirin is permitted
The subject is willing and able to fully participate for the duration of the study
If applicable, the subject has been counseled on smoking cessation
The effects of rosiglitazone (Avandia) on the developing human fetus at the recommended therapeutic dose are unknown; for this reason, and because rosiglitazone has been associated with fetal death and growth retardation in rats and rabbits and placental pathology in rats, women of child-bearing potential must agree to use adequate contraception (hormonal or barrier method of birth control; abstinence) prior to study entry and for the duration of study participation; should a woman become pregnant or suspect she is pregnant while participating in this study, she should inform her study physician immediately and will be removed from the trial
Ability to understand and the willingness to sign a written informed consent document
The subject is of New York Heart Association (NYHA) Class 1 to 4 cardiac status
Exclusion criteria
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25 participants in 1 patient group
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Data sourced from clinicaltrials.gov
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