The cornerstone of NCI's transformed clinical trials program, the
National Clinical Trials Network (NCTN) is a network of organizations and clinicians that conduct large phase II and phase III clinical trials across the United States and Canada that help to establish new standards of care, set the stage for FDA approval of new therapies, test new approaches to radiation therapy and surgery, and validate new biomarkers. NCTN provides an infrastructure for NCI-funded treatment, screening, and diagnosis trials at over 3,000 clinical trials sites.
