lead-in FOLICOLOR Trial: Following Therapy Response Through Liquid Biopsy in Metastatic Colorectal Cancer Patients

Prospective, multicentric interventional study to optimize the cutoff value of NPY methylation in liquid biopsies in metastatic colorectal cancer patients treated with first-line FOLFOX/FOLFIRI and panitumumab. Inclusion is possible after histologically or cytologically proven colorectal adenocarcinoma with metastatic lesions according to RECIST 1.1 at the start of first-line treatment using FOLFOX/FOLFIRI and panitumumab. Patient must have a proven RAS and BRAF wild-type tumor. Patients will be followed by study protocol up to and including the first CT scan following the last liquid biopsies taken, or when a follow-up period of 11 months is reached, until death, until metastasectomy, until lost to follow-up or until (consent) withdrawal.