Visceral Heterotaxy, also known as heterotaxia, is related to situs inversus and right atrial isomerism. An important gene associated with Visceral Heterotaxy is PKD1L1 (Polycystin 1 Like 1, Transient Receptor Potential Channel Interacting), and among its related pathways/superpathways are Mesodermal commitment pathway and Signaling by NODAL. Affiliated tissues include heart and spleen, and related phenotypes are growth/size/body region and nervous system