Nephrotic Syndrome, Type 23, also known as nphs23, is related to nephrotic syndrome, type 21 and nephrotic syndrome, type 1. An important gene associated with Nephrotic Syndrome, Type 23 is KIRREL1 (Kirre Like Nephrin Family Adhesion Molecule 1), and among its related pathways/superpathways are Primary focal segmental glomerulosclerosis (FSGS) and Genes controlling nephrogenesis. Affiliated tissues include kidney, and related phenotypes are proteinuria and steroid-resistant nephrotic syndrome