Journal
HUMAN GENOMICS
Volume 17, Issue 1, Pages -Publisher
BMC
DOI: 10.1186/s40246-023-00456-w
Keywords
Clinical exome sequencing; Next-generation sequencing; Kidney diseases; Genetic testing; Pediatric cohort
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Inherited kidney diseases account for a significant proportion of kidney failure in children, leading to increased mortality, high healthcare costs, and the need for organ transplantation. Next-generation sequencing technologies have the potential to improve diagnosis and enable personalized medical management.
PurposeInherited kidney diseases are among the leading causes of kidney failure in children, resulting in increased mortality, high healthcare costs and need for organ transplantation. Next-generation sequencing technologies can help in the diagnosis of rare monogenic conditions, allowing for optimized medical management and therapeutic choices.MethodsClinical exome sequencing (CES) was performed on a cohort of 191 pediatric patients from a single institution, followed by Sanger sequencing to confirm identified variants and for family segregation studies.ResultsAll patients had a clinical diagnosis of kidney disease: the main disease categories were glomerular diseases (32.5%), ciliopathies (20.4%), CAKUT (17.8%), nephrolithiasis (11.5%) and tubular disease (10.5%). 7.3% of patients presented with other conditions. A conclusive genetic test, based on CES and Sanger validation, was obtained in 37.1% of patients. The highest detection rate was obtained for ciliopathies (74.4%), followed by nephrolithiasis (45.5%), tubular diseases (45%), while most glomerular diseases and CAKUT remained undiagnosed.ConclusionsResults indicate that genetic testing consistently used in the diagnostic workflow of children with chronic kidney disease can (i) confirm clinical diagnosis, (ii) provide early diagnosis in the case of inherited conditions, (iii) find the genetic cause of previously unrecognized diseases and (iv) tailor transplantation programs.
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