Spastic Paraplegia 33, Autosomal Dominant, also known as hereditary spastic paraplegia 33, is related to contractures, pterygia, and spondylocarpotarsal fusion syndrome 1a and spastic paraplegia 20, autosomal recessive. An important gene associated with Spastic Paraplegia 33, Autosomal Dominant is ZFYVE27 (Zinc Finger FYVE-Type Containing 27). Affiliated tissues include brain, and related phenotypes are hyperreflexia and talipes equinovarus