Aim:DR-70 is a newly developed immunoassay that detects fibrin degradation products in blood. We aimed to evaluate ability of DR-70 in monitoring treatment response in advanced gastrointestinal (GI) cancers. Materials and Methods:We prospectively enrolled patients with advanced GI cancers treated with different lines of systemic therapies. https://www.roneverhart.com/Rexford-Knives-Rut-V5-Completed/