Anterior Segment Dysgenesis 3, also known as iridogoniodysgenesis, type 1, is related to primary congenital glaucoma and iris hypoplasia with glaucoma. An important gene associated with Anterior Segment Dysgenesis 3 is FOXC1 (Forkhead Box C1). Affiliated tissues include eye and skin, and related phenotypes are cerebellar vermis hypoplasia and enlarged cisterna magna