Acquired Hyperkeratosis, also known as acquired keratoderma, is related to double outlet right ventricle and loeys-dietz syndrome. An important gene associated with Acquired Hyperkeratosis is ARSL (Arylsulfatase L), and among its related pathways/superpathways are Signal Transduction and TGF-beta receptor signaling in skeletal dysplasias. Affiliated tissues include skin and lung, and related phenotype is craniofacial.