The most important factors, according to their normalized importance (NI), for predicting the overall survival outcome (dead/alive) were as follows: ARG1 (100% NI), REL (63.5%), CTSG (54.2%), IFNA8 (52.7%), NRP1 (52.0%), CASP1 (47.3%), TNFSF12 (36.0%), molecular subtypes (34.9%), EBER (22.8%), high-grade B-cell lymphoma (8.7%), and IPI (6.7%). This evidence concerns the gene ARG1 and B-cell non-Hodgkin lymphoma.