Anal Human Papillomavirus in Inflammatory Bowel Disease Study

"Before and at least 6 months after starting a new non-steroid immunosuppressive agent for IBD treatment, eligible participants who are attending for routine colonoscopy will have:~1. Anal swab samples (and vaginal swab samples for female participants) for human papillomavirus PCR typing (6, 11, 16, 18, 31, 33, 45, 52, 58)~2. High-resolution anoscopy and biopsy of all visible high-grade dysplastic lesions based on validated colposcopic criteria~3. Anal cytology testing"