ADENOCARCINOMA OF THE RECTUM

This phase 2 trial tests whether adding two targeted drugs (tucatinib and trastuzumab) to standard chemotherapy can shrink HER2-positive rectal tumors before surgery. About 37 adults with locally advanced rectal cancer will receive the drug combo for 6 weeks, then continue it wit…

This trial is testing whether giving the immunotherapy drug pembrolizumab before surgery can improve outcomes for people with high-risk stage 2 or stage 3 colorectal cancer that has a specific genetic feature called mismatch repair deficiency. About 88 participants will receive p…

This study tests whether a stool DNA test (mt-sDNA) can accurately detect polyps or cancer in people who have already been treated for stage I-III colorectal cancer. Researchers will compare the stool test results to colonoscopy findings in 50 survivors. The goal is to see if the…

This study looks at whether people who have had 1 or 2 small, non-cancerous polyps removed can safely wait 10 years for their next colonoscopy instead of the usual 5 years. About 9,500 adults aged 45-69 will be randomly assigned to one of two schedules: a colonoscopy at 5 and 10 …

This study aims to learn more about how the body responds to standard treatments for rectal cancer, including chemoradiation and chemotherapy. Researchers will analyze participants' blood, tissue, and scans to see if these tests can predict whether the cancer improves, worsens, o…

This study looks at how Y90 radioembolization, a radiation treatment for liver tumors that have spread from colorectal cancer, actually works inside the body. Researchers will collect small tissue samples (biopsies) from the liver after treatment to see how much tumor damage occu…