Variant allele frequency in baseline circulating tumour DNA to measure tumour burden and to stratify outcomes in patients with RAS wild-type metastatic colorectal cancer: a translational objective of the Valentino study

Paolo Manca, Salvatore Corallo, Sara Lonardi, Giovanni Fucà, Adele Busico, Alberto Giovanni Leone, Francesca Corti, Carlotta Antoniotti, Letizia Procaccio, Valeria Smiroldo, Margherita Ratti, Roberto Murialdo, Patrizia Racca, Filippo Pagani, Giovanni Randon, Antonia Martinetti, Elisa Sottotetti, Michele Prisciandaro, Margherita Ambrosini, Alessandra Raimondi, Federica Morano, Filippo Pietrantonio