To provide new therapies for the treatment of cancer with a low survival rate, represented by non-small cell lung cancer (NSCLC).SOLUTION: A combination product comprises a therapeutically effective amount of a compound of formula (I) or a pharmaceutically acceptable salt or co-crystal thereof, and one or more immunotherapeutic agents selected from the group consisting of an anti-CTLA4 antibody, an anti-PD-1 antibody and an anti-PD-L1 antibody.SELECTED DRAWING: None