Urological Research

, Volume 34, Issue 5, pp 299–303

Evidence for association of SLC7A9 gene haplotypes with cystinuria manifestation in SLC7A9 mutation carriers

  • Anthoula Chatzikyriakidou
  • Nikolaos Sofikitis
  • Vasiliki Kalfakakou
  • Konstantinos Siamopoulos
  • Ioannis Georgiou
Original Paper

DOI: 10.1007/s00240-006-0060-6

Cite this article as:
Chatzikyriakidou, A., Sofikitis, N., Kalfakakou, V. et al. Urol Res (2006) 34: 299. doi:10.1007/s00240-006-0060-6

Abstract

Cystinuria is a complex genetic disorder. In the present study, we report on the strict linkage disequilibrium of SLC7A9 mutations with the wild type SLC7A9 haplotype of 15 single nucleotide polymorphisms (SNPs) and their effect on cystinuria manifestation and classification. Specifically, screening for mutations and polymorphisms was performed in the family members of ten cystinuric patients with SLC7A9 gene mutations. The molecular genetic and clinical data of cystinuric patients and their relatives were combined to construct the SLC7A9 SNP haplotypes and evaluate the manifestation of the disorder in carriers for a SLC7A9 gene mutation. It was found that all carriers of a SLC7A9 mutation manifested cystinuria if their normal allele had non-wild type nucleotides in two or more of the identified polymorphic sites. Subsequently, the polymorphic background of the SLC7A9 gene probably affects the expression of the disorder in SLC7A9 mutation carriers and points to a revised genetic classification of cystinuric patients.

Keywords

Cystinuria SLC3A1 gene SLC7A9 gene Inheritance Genetic classification 

Copyright information

© Springer-Verlag 2006

Authors and Affiliations

  • Anthoula Chatzikyriakidou
    • 1
  • Nikolaos Sofikitis
    • 1
  • Vasiliki Kalfakakou
    • 2
  • Konstantinos Siamopoulos
    • 3
  • Ioannis Georgiou
    • 1
    • 4
  1. 1.Laboratory of Molecular Urology and Reproductive GeneticsIoannina University School of MedicineIoanninaGreece
  2. 2.Laboratory of Experimental PhysiologyIoannina University School of MedicineIoanninaGreece
  3. 3.Department of NephrologyIoannina University School of MedicineIoanninaGreece
  4. 4.Genetics Unit, Department of Obstetrics and GynaecologyIoannina University School of MedicineIoanninaGreece