Utilizing the KEGG pathway analysis, we identified a significant correlation between ATL-I treatment and multiple cancer-related signaling pathways, such as the MAPK, PI3K-AKT, and HIF1A/HIF1α (hypoxia inducible factor 1 subunit alpha)-ARNT/HIF1β (aryl hydrocarbon receptor nuclear translocator) heterodimer (HIF-1) signaling pathways. This evidence concerns the gene HIF1A and cancer.