Lissencephaly 9 with Complex Brainstem Malformation, also known as lis9, is related to motility-related diarrhea. An important gene associated with Lissencephaly 9 with Complex Brainstem Malformation is MACF1 (Microtubule Actin Crosslinking Factor 1). Affiliated tissues include pons and brain, and related phenotypes are intellectual disability, severe and neurodevelopmental delay