Nephronophthisis 12, also known as joubert syndrome 11, is related to ciliopathy and end stage renal disease. An important gene associated with Nephronophthisis 12 is TTC21B (Tetratricopeptide Repeat Domain 21B), and among its related pathways/superpathways are Loss of Nlp from mitotic centrosomes and Signaling by Hedgehog. Affiliated tissues include kidney, and related phenotypes are nephronophthisis and stage 5 chronic kidney disease