Houge-Janssens Syndrome 2, also known as microcephaly-corpus callosum hypoplasia-intellectual disability-facial dysmorphism syndrome, is related to plasmacytoma and mechanical ectropion. An important gene associated with Houge-Janssens Syndrome 2 is PPP2R1A (Protein Phosphatase 2 Scaffold Subunit Aalpha), and among its related pathways/superpathways are NF-kappaB Signaling and Reelin Pathway (Cajal-Retzius cells). Affiliated tissues include uterus and eye, and related phenotypes are intellectual disability and seizure