Poirier-Bienvenu Neurodevelopmental Syndrome, also known as pobinds, is related to contractures, pterygia, and spondylocarpotarsal fusion syndrome 1a and cerebellar atrophy, developmental delay, and seizures. An important gene associated with Poirier-Bienvenu Neurodevelopmental Syndrome is CSNK2B (Casein Kinase 2 Beta). Affiliated tissues include tongue, and related phenotypes are intellectual disability and mandibular prognathia