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IntroductionNephrotic syndrome is a kidney disorder marked by excessive protein loss in the urine, leading to various systemic complications. This condition often results from damage to the glomeruli—the kidney's filtering units—causing proteinuria, low blood protein levels, and fluid retention. Understanding the assessment, diagnosis, and management of nephrotic syndrome is essential for effective treatment and prevention of further kidney damage.AssessmentPatient History: Document...
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Pierson Syndrome: An Update.

Ana Flávia Conegundes1, Nayara de Lima Silva1, Felipe Rodrigues Lima Resende Silva1

  • 1Interdisciplinary Laboratory of Medical Investigation, Unit of Pediatric Nephrology, Faculty of Medicine, Federal University of Minas Gerais. 190 Prof. Alfredo Balena Avenue, Santa Efigênia, Belo Horizonte, MG, 30130100, Brazil.

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Summary

Pierson syndrome is a rare genetic disorder affecting kidneys, eyes, and development. Caused by LAMB2 gene mutations, it has a poor prognosis, often leading to early-onset kidney failure.

Keywords:
Pierson syndromecongenital nephrotic syndromeglomerular basement membranelaminin 521laminin B2podocyte.

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Area of Science:

  • Genetics and rare diseases
  • Pediatric nephrology
  • Ophthalmology

Background:

  • Pierson syndrome (PS) is a rare autosomal recessive disorder.
  • Characterized by congenital nephrotic syndrome, ocular abnormalities, and neurodevelopmental deficits.
  • Caused by mutations in the LAMB2 gene, affecting laminin β2 chain production.

Purpose of the Study:

  • To review the latest insights into Pierson syndrome.
  • Covering etiopathogenesis, clinical manifestations, diagnosis, treatment, and prognosis.
  • Highlighting its clinical significance in early-onset kidney disease.

Main Methods:

  • Literature review of Pierson syndrome.
  • Synthesis of current knowledge on LAMB2 gene mutations.
  • Consolidation of clinical data and research findings.

Main Results:

  • PS presents with a wide spectrum of phenotypes.
  • Prognosis is generally poor, with limited survival into childhood.
  • Early-onset end-stage kidney disease is a significant complication.

Conclusions:

  • Pierson syndrome is a severe genetic disorder with significant early-life impact.
  • Understanding LAMB2 gene mutations is key to diagnosis and potential therapies.
  • Further research is needed to improve treatment and outcomes for PS patients.