Keratosis Pilaris Atrophicans, also known as kpa, is related to keratosis and keratosis follicularis spinulosa decalvans. An important gene associated with Keratosis Pilaris Atrophicans is LRP1 (LDL Receptor Related Protein 1), and among its related pathways/superpathways are Metabolism and Unfolded Protein Response (UPR). Affiliated tissues include skin, and related phenotypes are erythema and intellectual disability