Genetic studies on familial interstitial nephritis

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Chronic kidney disease(CKD) is clinically heterogeneous groups of diseases at a higher risk of potentially progressing to the end stage renal failure. The CKD is becoming a global health problem since it is indeed highly prevalent at one in eight adult individuals. The tubule-interstitial injuries significantly contribute to the pathogenesis of CKD as a primary initiating factor and/or a secondary exacerbating changes resulting from the glomerular insults. However, earlier tubule-interstitial injuries are often under-recognized because the patients barely manifest overt proteinuria and renal dysfunction. To improve the treatment for CKD, there is a need for elucidation of new disease biomarkers and genetic risk factors underlying tubule-interstitial diseases.This study aimed to identify the disease genes underling a large dominant family with tubule-interstitial nephritis. A combined approach of linkage analysis and next generation sequencing revealed that two novel single nucleotide variants may explain the susceptibility for interstitial nephritis.