de-la-Torre A, Sauer A, Pfaff AW, Bourcier T, Brunet J, Speeg-Schatz C, et al. Severe South American ocular toxoplasmosis is associated with decreased IFNγ/IL17a and increased IL6/IL13 intraocular levels. The gene discussed is IFNG; the disease is ocular toxoplasmosis.