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Genetic link with cholelithiasis among pediatric SCA Tunisian patients: Examples of UGT1A1, SLCO1A2 and SLCO1B1

Leila Chaouch1, Miniar Kalai11, Imen Darragi1

  • 1a Université de Tunis El Manar, Institut Pasteur de Tunis, Laboratoire d'Hématologie Moléculaire et Cellulaire , Tunis , Tunisie.

Hematology (Amsterdam, Netherlands)
|July 7, 2015
PubMed

Insights

Children with sickle cell anemia (SCA) and specific gene variations in UGT1A1 and SLCO1A2 face a significantly higher risk of developing gallstones. This study highlights key genetic factors contributing to cholelithiasis in pediatric SCA patients.

Area of Science:

  • Genetics
  • Pediatrics
  • Gastroenterology

Background:

  • Hyperbilirubinemia in sickle cell anemia (SCA) can lead to pigment gallstones.
  • Enzyme defects in bilirubin metabolism may exacerbate gallstone formation.
  • Genetic polymorphisms in bilirubin metabolism genes are implicated.

Purpose of the Study:

  • To investigate the correlation between specific gene polymorphisms and gallstone presence in Tunisian pediatric SCA patients.
  • To analyze polymorphisms in SLCO1B1 (rs4149056), SLCO1A2 (rs4149000), and UGT1A1 (rs8175347, rs887829).

Main Methods:

  • Study included 102 Tunisian pediatric SCA patients with hyperbilirubinemia.
  • 52 patients had cholelithiasis; 50 did not.
  • Gene polymorphisms analyzed via PCR/sequencing; frequencies compared using Pearson's chi-square test.

Main Results:

  • Children with a combined genotype (TA7TA7)/TT/TC/GA showed a significantly higher risk of gallstones.
  • This combined genotype was associated with an 18.27-fold increased risk (P=0.0027).

Conclusions:

  • UGT1A1 and SLCO1A2 gene polymorphisms are implicated in the development of gallstones in SCA.
  • Findings highlight the role of specific genetic variations in SCA-related cholelithiasis.
Abstract

Keywords:
CholelithiasisSLCO1A2SLCO1B1Sickle cell anemiaUGT1A1

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