1.	Phase 1b Food Based Modulation of Biomarkers in Human Tissues at High-Risk for Oral Cancer. Phase: Phase II, Phase I Type: Biomarker/Laboratory analysis, Prevention Status: Active Age: 21 and over Sponsor: NCI, Other Protocol IDs: OSU-07085, NCI-2011-03226, R01CA127368, NCT01469429
2.	A Study of the Effects of PEITC on Oral Cells With Mutant p53 Phase: Phase II, Phase I Type: Biomarker/Laboratory analysis, Prevention Status: Active Age: 20 to 65 Sponsor: Other Protocol IDs: R01CA1000853, NCT01790204
3.	Pioglitazone for Oral Premalignant Lesions Phase: Phase II Type: Biomarker/Laboratory analysis, Prevention, Treatment Status: Active Age: 18 and over Sponsor: NCI Protocol IDs: NCI-2012-03152, INC07-10-01, N01CN35153, N01CN35159, NCT00951379
4.	Vandetanib in Preventing Head and Neck Cancer in Patients With Precancerous Head and Neck Lesions Phase: Phase II Type: Biomarker/Laboratory analysis, Prevention Status: Active Age: 18 and over Sponsor: NCI, Other Protocol IDs: 11-0265, NCI-2011-01246, NCT01414426
5.	Phase I Chemoprevention Trial With Green Tea Polyphenon E and Erlotinib in Patients With Premalignant Lesions of the Head and Neck Phase: Phase I Type: Prevention Status: Active Age: 18 and over Sponsor: Other Protocol IDs: WCI1549-08, NCT01116336
6.	A Randomized Study of Sulindac in Oral Premalignant Lesions Phase: No phase specified Type: Prevention Status: Active Age: Over 18 Sponsor: Other Protocol IDs: 04-099, NCT00299195
7.	Smoking Cessation Treatment for Head and Neck Cancer Patients Phase: No phase specified Type: Behavioral study, Prevention Status: Active Age: 18 and over Sponsor: Other Protocol IDs: 0903004910, NCT00931021
8.	Prevent Exposure to Tobacco Smoke at Home [Gesunde Atemluft zu Hause] Phase: No phase specified Type: Behavioral study, Prevention Status: Approved-not yet active Age: 3 and under Sponsor: Other Protocol IDs: Krebshilfe-107539, DM8-IESO02, NCT00647413