Related Experiment Video
Updated: Jun 3, 2026

Targeted Next-generation Sequencing and Bioinformatics Pipeline to Evaluate Genetic Determinants of Constitutional Disease
Published on: April 4, 2018
KLOTHO gene polymorphism of G395A is associated with kidney stones
Dilek Telci1, Ali Umman Dogan, Emin Ozbek
1Department of Genetics and Bioengineering, Yeditepe University, Istanbul, Turkey. dilek.telci@yeditepe.edu.tr
Background/Aims:
KLOTHO, a type-1 transmembrane protein with glucurodinase activity, is expressed in tissues responsible for calcium homeostasis such as the kidney, parathyroid gland and the epithelium of the choroid plexus in the brain. Given the emerging evidence indicating a novel regulatory function for KLOTHO protein in renal calcium and phosphate homeostasis, the present study aims to investigate the association between KLOTHO genetic polymorphisms and kidney stone (KS).
Methods:
KLOTHO gene polymorphisms G395A in the promoter region, F252V in exon 2, and C1818T in exon 4 were investigated in 108 patients with renal calcium stone formation and 51 age-matched healthy volunteers with no history of renal stone formation, using polymerase chain reaction.
Results:
GG genotype of G395A KLOTHO polymorphism had approximately 2-fold increased KS risk compared with the homozygous genotype AA and heterozygote GA (OR 1.849, 95% CI 1.016-3.364, p = 0.044). We also found that non-A allele carriers had significantly higher KS risk associated with the KS clinical characteristics including hypercalcemia, hypophosphatemia and phosphaturia.
Conclusion:
Our findings suggested that the G395A polymorphism of KLOTHO gene is associated with the KSs and may act as a risk factor for the development of KS disease.
Related Concept Videos
Pharmacogenetic Phenotypes: Alterations in Pharmacokinetics, Drug Targets and Biologic Milieu
Pharmacogenetics of Drug Transporters: P-Glycoprotein and Solute Carrier Transporters
Pharmacogenetics of Drug Targets: β₂-Adrenergic Receptors, Apo E, Thymidylate Synthase
Urinary Tract Calculi IV: Nutrition Therapy and Prevention
Urinary Tract Calculi I: Introduction
Pharmacogenomics: Identification of New Drug Targets
