Heterotaxy, Visceral, 5, Autosomal, also known as heterotaxy, visceral, 5, is related to situs inversus and swine influenza. An important gene associated with Heterotaxy, Visceral, 5, Autosomal is NODAL (Nodal Growth Differentiation Factor). Affiliated tissues include spleen and heart, and related phenotypes are dextrotransposition of the great arteries and atrial septal defect