A study by Carneior et al., which evaluated the effect of cytokines on OT, showed that in infants with OT, there was an increase in IL-1β and TNF-α levels, babies with active lesions of retinochoroiditis had increased levels of IFN-γ and IL-17, infants with retinochoroidal scars have increased IL-10, IL-1β, and TNF-α, infants with active lesions and retinochoroidal scars have increased IL-10, and in general, there are increased levels of IFN-γ and IL-12 in all clinical conditions [16]. This evidence concerns the gene IL17A and chorioretinitis.