Treatment with checkpoint inhibitors in a metastatic colorectal cancer patient with molecular and immunohistochemical heterogeneity in MSI/dMMR status ====================================================================================================================================================== * Fotios Loupakis * Giulia Maddalena * Ilaria Depetris * Sabina Murgioni * Francesca Bergamo * Angelo Paolo Dei Tos * Massimo Rugge * Giada Munari * Andrew Nguyen * Christopher Szeto * Vittorina Zagonel * Sara Lonardi * Matteo Fassan