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Segmental glomerulosclerosis

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Disease or Syndrome

Focal segmental glomerulosclerosis 1

Focal segmental glomerulosclerosis (FSGS) is a pathologic finding in several renal disorders that manifest clinically as proteinuria and progressive decline in renal function. Some patients with FSGS develop the clinical entity called 'nephrotic syndrome' (see NPHS1; 256300), which includes massive proteinuria, hypoalbuminemia, hyperlipidemia, and edema. However, patients with FSGS may have proteinuria in the nephrotic range without other features of the nephrotic syndrome (summary by D'Agati et al., 2004; Mathis et al., 1998). D'Agati et al. (2011) provided a detailed review of FSGS, emphasizing that the disorder results from defects of the podocyte. Because of confusion in the literature regarding use of the terms 'nephrotic syndrome' and 'focal segmental glomerulosclerosis' (see NOMENCLATURE section), these disorders in OMIM are classified as NPHS or FSGS according to how they were first designated in the literature. Genetic Heterogeneity of Focal Segmental Glomerulosclerosis and Nephrotic Syndrome Focal segmental glomerulosclerosis and nephrotic syndrome are genetically heterogeneous disorders representing a spectrum of hereditary renal diseases. See also FSGS2 (603965), caused by mutation in the TRPC6 gene (603652); FSGS3 (607832), associated with variation in the CD2AP gene (604241); FSGS4 (612551), mapped to chromosome 22q12; FSGS5 (613237), caused by mutation in the INF2 gene (610982); FSGS6 (614131), caused by mutation in the MYO1E gene (601479); FSGS7 (616002), caused by mutation in the PAX2 gene (167409); FSGS8 (616032), caused by mutation in the ANLN gene (616027); and FSGS9 (616220), caused by mutation in the CRB2 gene (609720). See also NPHS1 (256300), caused by mutation in the NPHS1 gene (602716); NPHS2 (600995), caused by mutation in the podocin gene (604766); NPHS3 (610725), caused by mutation in the PLCE1 gene (608414); and NPHS4 (256370), caused by mutation in the WT1 gene (607102). [from OMIM]

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