OT-I T cells were activated by OVA257-264 alone or in the presence of elraglusib and/or anti-PD-1 mAb for 5 days, following which the CTLs were subjected to a 4 h incubation with EL4 lymphoma target cells before lactate dehydrogenase (LDH) release was measured as an indication of cytolytic killing. This evidence concerns the gene PDCD1 and lymphoma.