Cellular interference is a term that was first used to describe EFNB1 syndrome, a genetic disorder caused by mutations in the EFNB1 gene that is characterized by craniofacial deformations and has the same inheritance pattern as PCDH19 epilepsy, with heterozygous females and mosaic males being most severely affected [101–103]. This evidence concerns the gene PCDH19 and epilepsy.