Family Communications After Genetic Testing

This clinical trial compares patient (proband)-mediated communication to provider-mediated communication for improving genetic testing in first-degree relatives of patients with newly diagnosed colorectal cancer. It is estimated that 30% of cases of colorectal cancer have a genetic basis and about 15% of these patients have a disease-causing (pathogenic) inherited (germline) variant in a cancer susceptibility gene. Most individuals carrying a pathogenic germline variant are unaware of their cancer risk and may not meet guidelines for genetic testing. Identifying pathogenic germline variants or hereditary cancer syndromes in cancer patients has important implications for their at-risk relatives who may not know that they are at high risk for cancer. The burden of communicating this risk to first-degree relatives often falls on the patients, who may lack sufficient knowledge to correctly share and explain their genetic test results. Receiving provider-mediated communication of genetic testing results may be more effective at communicating genetic risk to first-degree relatives than the usual practice of proband-mediated communication.

NCT Number	NCT07143487
Lead Sponsor	Alliance for Clinical Trials in Oncology Collaborators: National Cancer Institute (NCI)
Conditions	Colon Adenocarcinoma, Colorectal Adenocarcinoma, Rectal Adenocarcinoma, Stage I Colon Cancer AJCC v8, Stage I Colorectal Cancer AJCC v8, Stage I Rectal Cancer AJCC v8, Stage II Colon Cancer AJCC v8, Stage II Colorectal Cancer AJCC v8 +7 more
Enrollment	4,186 participants
Start Date	2026-04-06
Primary Completion	2029-11-05 (estimated)
Study Completion	2032-11-05 (estimated)
Updated on ClinicalTrials.gov	2026-08-05