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Pierson syndrome MeSH Supplementary Concept Data 2026
A hereditary autosomal recessive disorder characterized by congenital nephrotic syndrome with diffuse SCLEROSIS of the GLOMERULAR MESANGIUM and distinct ocular abnormalities, including microcoria (narrowing of the pupil) and hypoplasia of the ciliary and pupillary muscles, as well as other anomalies. Many patients die in infancy, and those who survive tend to show neurodevelopmental delay and visual loss. Mutations in the LAMB2 gene have been identified. OMIM: 150325