81
Participants
Start Date
January 16, 2018
Primary Completion Date
January 31, 2023
Study Completion Date
December 13, 2025
Aspirin
Given PO
Biospecimen Collection
Undergo collection of blood, urine, stool, and rectal swab samples
Placebo Administration
Given PO
Questionnaire Administration
Ancillary studies
Rectal Biopsy
Undergo rectal biopsy
Vanderbilt University/Ingram Cancer Center, Nashville
National Cancer Institute (NCI)
NIH