Clinical Trials Browser

NIH × Rectal Neoplasms × Sigmoidoscopy × Clear all

NCT04751370 2026-04-13

Testing Nivolumab and Ipilimumab With Short-Course Radiation in Locally Advanced Rectal Cancer

Phase 2 Active not recruiting

Gastrointestinal

Rectal Neoplasms

NCT04929028 2026-04-13

Therapy Adapted for High Risk and Low Risk HIV-Associated Anal Cancer

Phase 2 Active not recruiting

Gastrointestinal

Anus Neoplasms, Rectal Neoplasms, HIV Infections

NCT01696981 2025-07-23

Screening for Colorectal Cancer in Older Patients (PLCO Screening Trial)

Phase NA Active not recruiting

154,900 enrolled 15 charts

Gastrointestinal

Colonic Neoplasms, Rectal Neoplasms

NCT00893295 2013-12-18

Increasing Colorectal Cancer Screening in African Americans

Phase 3 Unknown

Gastrointestinal

Colonic Neoplasms, Rectal Neoplasms, Colorectal Neoplasms