IFNG and breast angiosarcoma: On the other hand, decreased plasma levels of 2 out of 27 cytokines including IFN-γ (OR = 0.87, 95% CI: 0.80, 0.94, P = 0.001) and PDGF (OR = 0.88, 95% CI: 0.82, 0.94, P<0.001) were significantly associated with BA.