Persistent Fetal Circulation Syndrome, also known as persistent fetal circulation, is related to placental insufficiency and hypokalemia. An important gene associated with Persistent Fetal Circulation Syndrome is MIR517A (MicroRNA 517a), and among its related pathways/superpathways are Signal Transduction and Peptide hormone metabolism. The drugs Benzocaine and Tannic acid have been mentioned in the context of this disorder. Affiliated tissues include heart and placenta, and related phenotypes are homeostasis/metabolism and growth/size/body region