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Pediatria Polska - Polish Journal of Paediatrics
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4/2024
vol. 99
 
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abstract:
Review paper

Inherited glycosylphosphatidylinositol deficiency disorders: a new group of inherited metabolic disorders

Michał Patalan
1
,
Alicja Leśniak
1
,
Justyna Paprocka
2
,
Agnieszka Zubkiewicz-Kucharska
3
,
Kaja Giżewska-Kacprzak
4
,
Marta Glińska
1
,
Lidia Babiak-Choroszczak
4
,
Maria Giżewska
1
,
Robert Śmigiel
3

  1. Department of Pediatrics, Endocrinology, Diabetology, Metabolic Diseases and Cardiology, Pomeranian Medical University in Szczecin, Poland
  2. Department of Pediatric Neurology, Medical University of Silesia, Katowice, Poland
  3. Department of Pediatrics, Endocrinology, Diabetology and Metabolic Diseases, Wroclaw Medical University, Poland
  4. Department of Pediatrics Surgery, Oncology, Urology and Hand Surgery, Pomeranian Medical University in Szczecin, Poland
Pediatr Pol 2024; 99 (4): 329-334
DOI: https://doi.org/10.5114/polp.2024.146394
Online publish date: 2024/12/30
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Inherited glycosylphosphatidylinositol deficiency disorders (IGDs) are a group of rare congenital disorders of glycosylation with multisystemic involvement. The underlying cause is an abnormal structure of glycosylphosphatidylinositol, which plays a significant role in the attachment of proteins to the cellular membrane. These glycosylphosphatidylinositol-anchored proteins are an important part of receptors, function as hydrolytic enzymes, and play a crucial role in molecules adhesion, immune response, embryogenesis and neurogenesis. Patients present a variety of symptoms including developmental delay with intellectual disability, abnormalities of the central nervous, skeletal, circulatory, gastrointestinal, and urinary systems, facial dysmorphia as well as hearing and visual impairment. Elevated alkaline phosphatase is a characteristic biochemical feature. The current state of knowledge connects the highly differentiated course of clini­cal presentation with the heterogenic molecular background evaluated in the next-generation sequencing methods. We present a comprehensive review of the pathogenesis, clinical symptomatology and management options in IGDs.
keywords:

congenital disorders of glycosylation, inherited glycosylphosphatidylinositol deficiency disorders, glycosylphosphatidylinositol-anchored proteins, next-generation sequencing

  
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