Focal Segmental Glomerulosclerosis 9, also known as fsgs9, is related to focal segmental glomerulosclerosis 2 and oligomeganephronia. An important gene associated with Focal Segmental Glomerulosclerosis 9 is CRB2 (Crumbs Cell Polarity Complex Component 2), and among its related pathways/superpathways are Focal adhesion and Primary focal segmental glomerulosclerosis (FSGS). Affiliated tissues include kidney, and related phenotypes are focal segmental glomerulosclerosis and steroid-resistant nephrotic syndrome