TREX1 and congenital toxoplasmosis: Characterization of phenotypes of our newly identified susceptibility genes is ongoing (Table 1): TREX1 was studied because of the similarity between the brain calcifications in congenital toxoplasmosis and in the genetic Aicardi Goutiere’s disease that could be due to mutations in TREX1 (Naranjo-Galvis et al., manuscript in preparation).