Alternative titles and symbols : Microcoria-congenital nephrotic syndrome;
Description : Pierson syndrome is an autosomal recessive disorder comprising congenital nephrotic
syndrome with diffuse mesangial sclerosis and distinct ocular abnormalities, including
microcoria and hypoplasia of the ciliary and pupillary muscles, as well as other anomalies.
Many patients die early, and those who survive tend to show neurodevelopmental delay
and visual loss (summary by Zenker et al., 2004). Mutations in the LAMB2 gene also
cause nephrotic syndrome type 5 with or without mild ocular anomalies (NPHS5; 614199).;
Inheritance : Autosomal recessive;
Molecular basis : Caused by mutation in the laminin beta-2 gene (LAMB2, 150325.0001);