Rumination Disorder, also known as psychogenic rumination, is related to gastroparesis and duodenitis. An important gene associated with Rumination Disorder is ATP12A (ATPase H+/K+ Transporting Non-Gastric Alpha2 Subunit), and among its related pathways/superpathways are Cell cycle_Chromosome condensation in prometaphase and Granzyme-A Pathway. The drugs Baclofen and GABA Agonists have been mentioned in the context of this disorder. Affiliated tissues include brain, and related phenotype is Increased Nanog expression.