The group of cell lines with decreased lysis after IFNγ treatment includes leukemia cell lines Molt-4 (p = 0.0030) and Kasumi-1 (p = 0.0231), EWS cell lines CHLA-9 (p = 0.0037) and CHLA-10 (p = 0.0292), lymphoma cell line Ramos-RA1 (p = 0.0007), and NB cell line CHLA-136 (p = 0.0065). This evidence concerns the gene IFNG and lymphoma.