1.	Evaluation of 20% Betulinic Acid Ointment for Treatment of Dysplastic Nevi (Moderate to Severe Dysplasia) Phase: Phase II, Phase I Type: Prevention Status: Active Age: 18 and over Sponsor: Other Protocol IDs: 2003-0811, NCT00346502
2.	Oral N-acetylcysteine for Protection of Human Nevi Against UV-induced Oxidative Stress/Damage in Vivo Phase: Phase II Type: Biomarker/Laboratory analysis, Prevention Status: Active Age: 18 and over Sponsor: Other Protocol IDs: HCI50308, NCT01612221
3.	Randomized Study of Web-Based Continuing Education Courses for Improving Physician Performance in Examination and Counseling of Patients on Skin Cancer or Weight Control. Note: The information about this trial has not been updated by the sponsor/principal investigator/lead organization. Cancer.gov cannot verify the accuracy of the information. Phase: No phase specified Type: Educational/Counseling/Training, Prevention Status: Active Age: Adult Sponsor: NCI Protocol IDs: RIH-1050258954A1, RIH-0348-03, NCT00295906
4.	Pilot Trial to Evaluate the Effect of Vitamin D on Melanocyte Biomarkers Phase: No phase specified Type: Biomarker/Laboratory analysis, Prevention Status: Active Age: 18 to 75 Sponsor: NCI, Other Protocol IDs: SKIN0010, SU-10272011-8570, 22207, NCI-2012-00043, NCT01477463
5.	Pilot Study Evaluating Sulforaphane in Atypical Nevi-Precursor Lesions Phase: No phase specified Type: Biomarker/Laboratory analysis, Prevention Status: Active Age: 18 and over Sponsor: Other Protocol IDs: 10-114, NCT01568996