1.	Modulation of Arachidonic Acid Metabolism by Chemopreventive Agents in Smokers Phase: Phase II, Phase I Type: Biomarker/Laboratory analysis, Prevention Status: Closed Age: 18 and over Sponsor: NCI, Other Protocol IDs: 2009-0804, MDA09-13-01, NCT01021215
2.	Zileuton in Preventing Lung Cancer in Patients With Bronchial Dysplasia Phase: Phase II Type: Prevention Status: Completed Age: 18 and over Sponsor: NCI, Other Protocol IDs: CDR0000271915, P30CA022453, WSU-D-2405, WSU-093201MP4F, NCT00056004
3.	Carboplatin and Gemcitabine Combined With Celecoxib and/or Zileuton in Treating Patients With Advanced Non-Small Cell Lung Cancer Phase: Phase II Type: Biomarker/Laboratory analysis, Treatment Status: Completed Age: 18 and over Sponsor: NCI, Other Protocol IDs: CDR0000334573, U10CA031946, CALGB-30203, NCT00070486