Pioglitazone for Oral Premalignant Lesions

Oral Leukoplakia Clinical Trial

Official title: Phase IIB Randomized, Placebo Controlled Trial of Pioglitazone for Oral Premalignant Lesions an Inter-consortium Collaborative Study

Status Completed

Clinical Trial Summary

The goal of this clinical research study is to learn how Actos (pioglitazone) may affect oral premalignant lesions (OPLs) and/or the risk of mouth cancer. The safety of this drug will also be studied.

Clinical Trial Description

PRIMARY OBJECTIVES:

I. To determine the clinical and histologic response of oral premalignant lesions to 24 weeks of therapy with pioglitazone, 45 mg qd, defined as 50% or greater reduction in the sum of all measured products of perpendicular dimensions of target lesions, or improvement in the degree of dysplasia or hyperplasia.

SECONDARY OBJECTIVES:

I. To determine the degree of change of putative biomarkers of pioglitazone efficacy including (but not restricted to) and in order of priority, tissue levels of:

• PPAR gamma,

• cyclin D1 and p21 as indirect measures of pharmacological effect

• TUNEL for apoptosis and Ki-67 for proliferation

• transglutaminase and involucrin as markers of squamous differentiation

• 15-PGDH, loss of heterozygosity (LOH). II. To determine the degree of change of C-reactive protein (CRP) in plasma. III. To assess tobacco and alcohol use among trial participants and to examine the relationship of tobacco and alcohol use to treatment response.

IV. To assess the safety of this agent in this population.

OUTLINE: Patients are randomized to 1 of 2 treatment arms.

ARM I: Patients receive pioglitazone hydrochloride orally (PO) once daily (QD) for 24 weeks.

ARM II: Patients receive placebo PO QD for 24 weeks.

After completion of study treatment, patients are followed up for 2 weeks. ;

Study Design

Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Investigator), Primary Purpose: Treatment

Related Conditions & MeSH terms

• Leukoplakia
• Leukoplakia, Oral
• Oral Leukoplakia
• Precancerous Conditions

• NCT number: NCT00951379
• Study type: Interventional
• Source: National Cancer Institute (NCI)
• Status: Completed
• Phase: Phase 2
• Start date: February 2010
• Completion date: March 2014