Diarrhea 6, also known as diar6, is related to chronic diarrhea due to guanylate cyclase 2c overactivity and dysentery. An important gene associated with Diarrhea 6 is GUCY2C (Guanylate Cyclase 2C). Affiliated tissues include breast and lung, and related phenotypes are chronic diarrhea and vitamin b12 deficiency