Role of common canalicular transporter gene variations in aetiology of idiopathic gallstones in childhood.
Variations in genes encoding canalicular transportes, for biliary lipids may affect concentrations of biliary lipids in bile and promote cholesterol crystallization and gallstone formation. In our study we investigated the contribution of heterozygosity for common variations considered either potentially pathogenic or susceptibility alleles for cholesterol cholelithiasis in adults (c.523A>G (p.Thr175Ala) and c.1954A>G (p.Arg652Gly) in ABCB4, c.1331T>C (p.Val444Ala) in ABCB11 and c.55 G>C (p.Asp19His) in ABCG8) to the aetiology of paediatric idiopathic gallstone disease. Genotyping was performed in 35 paediatric subjects with idiopathic gallstones with positive family history for gallstones and 150 population controls. The ABCB4 variant p.Thr175Ala was found only in the controls, not in the patients. The frequency of the remaining three variant alleles and the corresponding genotypes did not differ between patients and controls. We conclude that the studied common variations in genes encoding canalicular transporters known to contribute to genetic predisposition to cholesterol gallstones in adulthood do not contribute specifically to the aetiology of paediatric idiopathic gallstones.
Bronský
J
J
Charles University in Prague: Second Faculty of Medicine and University Hospital Motol, Department of Paediatrics, Prague, Czech Republic.
Jirsa
M
M
Nevoral
J
J
Hrebícek
M
M
D018435:ATP Binding Cassette Transporter, Subfamily B / Q000235:genetics*; D000074020:ATP Binding Cassette Transporter, Subfamily B, Member 11; D018528:ATP-Binding Cassette Transporters / Q000235:genetics*; D000293:Adolescent; D000328:Adult; D002353:Carrier State; D002648:Child; D002675:Child, Preschool; D005260:Female; D042882:Gallstones / Q000209:etiology* / Q000235:genetics*; D020022:Genetic Predisposition to Disease; D014644:Genetic Variation; D005838:Genotype; D006801:Humans; D007223:Infant; D008297:Male; D011247:Pregnancy
C093491:ABCB11 protein, human; D018435:ATP Binding Cassette Transporter, Subfamily B; D000074020:ATP Binding Cassette Transporter, Subfamily B, Member 11; D018528:ATP-Binding Cassette Transporters; C095122:multidrug resistance protein 3