Treatment of F3II breast tumor with 1⁄4 IC50, 1⁄2 IC50, and the IC50 of H. junceus scorpion venom decreased IFN-γ levels after 16 h of treatment, which was also observed at 48 h for 1⁄4 IC50 and the IC50 of the venom. Here, IFNG is linked to breast neoplasm.