| Iloprost in Preventing Lung Cancer in Former Smokers |
Iloprost, Quality-of-Life Assessment, Questionnaire Administration, Placebo Administration |
Active, not recruiting |
| Metformin for Chemoprevention of Lung Cancer in Overweight or Obese Individuals at High Risk for Lung Cancer |
Extended Release Metformin Hydrochloride, Biopsy, Biospecimen Collection, Bronchoscopy, Questionnaire Administration |
Recruiting |
| Metformin for the Prevention of Oral Cancer in Patients With Oral Leukoplakia or Erythroplakia |
Biopsy, Biospecimen Collection, Extended Release Metformin Hydrochloride, Placebo Administration |
Recruiting |
| Metformin Hydrochloride in Preventing Oral Cancer in Patients With an Oral Premalignant Lesion |
Laboratory Biomarker Analysis, Metformin Hydrochloride |
Active, not recruiting |
| MUC1 Vaccine in Preventing Lung Cancer in Current and Former Smokers at High Risk for Lung Cancer |
MUC1 Peptide-Poly-ICLC Vaccine, Laboratory Biomarker Analysis |
Active, not recruiting |
| Testing the Effect of the Broccoli Seed and Sprout Extract, Avmacol ES, on the Cancer Causing Substances of Tobacco in Heavy Smokers |
Biospecimen Collection, Broccoli Sprout/Broccoli Seed Extract Supplement, Placebo Administration, Questionnaire Administration |
Recruiting |