Ichthyosis, Lamellar, Autosomal Dominant, also known as lamellar ichthyosis, autosomal dominant, is related to contractures, pterygia, and spondylocarpotarsal fusion syndrome 1a and autosomal recessive congenital ichthyosis. An important gene associated with Ichthyosis, Lamellar, Autosomal Dominant is ASPRV1 (Aspartic Peptidase Retroviral Like 1). Affiliated tissues include skin and liver, and related phenotypes are hyperkeratosis and pruritus