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Cystinuria is a known genetic disorder. To date, two genes, SLC3A1 and SLC7A9, have been identified as causes of cystinuria. In this study of 10 patients with cystinuria, which is the largest Korean cohort ever studied, we examined the patients' phenotypes, clinical courses, and genetic analyses. A total of 10 patients with cystinuria diagnosed with cystine stones in a single tertiary medical center (Severance Hospital, Seoul, Republic of Korea) from April 2000 to July 2023 were included in the study. All of the patients participated in mutational studies, and the clinical presentation and consecutive laboratory findings of the patients were analyzed retrospectively. After the initial stone-related surgery or procedure at our hospital, 6 of the 10 patients underwent additional surgery at least once for recurrent stones. Genetic analyses identified six new mutations, of which only two patients had type B mutations. The most common genotype was compound heterozygous type A. We investigated the genotypes and clinical courses of 10 Korean patients with cystinuria who had not been previously reported. More data are needed to statistically analyze the genotype and phenotype of cystinuria.
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http://dx.doi.org/10.3390/biomedicines11102747 | DOI Listing |
Kidney Int Rep
August 2025
Department of Urology, Beijing Friendship Hospital, Capital Medical University, China.
Introduction: The incidence of pediatric nephrolithiasis has been increasing, and the role of genetic factors has garnered attention in recent years. This study aimed to explore the genetic basis underlying pediatric nephrolithiasis in Chinese population.
Methods: Whole exome sequencing (WES) was conducted in a consecutive cohort of 456 children over a 11-year period.
Electrolyte Blood Press
June 2025
Department of Internal Medicine, Chonnam National University Medical School and Chonnam National University Hospital, Gwangju, Republic of Korea.
Cystinuria is an autosomal recessively inherited genetic disorder, and is typically classified into type A, caused by mutations in , or type B, caused by mutations in . While the predominance of the genotypes varies among countries, due to lack of a large scale cohort, the characterization of mutations in or is still limited in East Asia. A 61-year-old male patient admitted to the department of nephrology, with a chief complaint of fever, chillness and left flank pain for a week.
View Article and Find Full Text PDFArch Ital Urol Androl
June 2025
CDC Ambrosiana, Cesano Boscone (MI).
The formation of kidney stones is a complex biologic process involving interactions among genetic, anatomic, dietary, and environmental factors. Traditional lithogenic models were based on urine supersaturation in relation to the activity of crystallization promoters and inhibitors. However, modern research has added new principles such as the "renal epithelial cell response" and the role of inflammation and oxidative stress leading to the development of a "multi-hit hypothesis".
View Article and Find Full Text PDFKidney Blood Press Res
June 2025
Background: Cystinuria is a rare genetic tubulopathy caused by mutations on SLC7A9 and SLC3A1 genes encoding for the apical membrane rBAT/b0,+AT transporter. The mean worldwide frequency of cystinuria is estimated to be 1:7000 with significant ethnogeographic variation in prevalence. Cystine builds up in the urine as a result of the transporter deficit, which can cause cystine crystals to form or even stones.
View Article and Find Full Text PDFUrolithiasis
June 2025
Department of Urology, Ondokuz Mayis University, Samsun, Turkey.