Natera's SAGITTARIUS trial, using Signatera for early-stage colon cancer, aims to enroll 700-900 patients to evaluate personalized adjuvant treatments. Signatera-positive patients may receive genotype-guided therapy or standard chemotherapy, while negative patients may de-escalate to observation or single-agent capecitabine. The trial involves 26 clinical centers in Italy, Spain, and Germany, with collaborations across Europe.