A smaller group of Th1 genes had decreased expression 2 weeks and 6 months after infusion, including IL-2, CXCR3 (on Th1 cells), and IFNG [coding for IFN-γ, a pro-inflammatory Th1 cytokine that causes MS exacerbations (27)]. The gene discussed is IFNG; the disease is myeloid sarcoma.