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Autosomal Dominant Tubulointerstitial Kidney Disease (ADTKD)

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Overview


Plain-Language Overview

Autosomal Dominant Tubulointerstitial Kidney Disease (ADTKD) is a genetic condition that affects the kidneys, specifically the tubules and the surrounding tissue. It causes a gradual loss of kidney function over time, often leading to chronic kidney disease and eventually kidney failure. The disease is inherited in an autosomal dominant pattern, meaning a child has a 50% chance of inheriting the condition if one parent is affected. People with ADTKD may experience symptoms like high blood pressure, reduced urine concentration, and sometimes gout due to elevated uric acid levels. The disease primarily impacts the kidney's ability to filter waste and maintain fluid and electrolyte balance.

Clinical Definition

Autosomal Dominant Tubulointerstitial Kidney Disease (ADTKD) is a hereditary disorder characterized by progressive tubulointerstitial fibrosis and tubular atrophy leading to chronic kidney disease. It is caused by mutations in genes such as UMOD, MUC1, REN, and HNF1B, which affect proteins involved in tubular function and structure. The disease manifests with slowly progressive renal insufficiency, bland urinary sediment, and minimal proteinuria. Patients often develop hyperuricemia and gout due to impaired uric acid excretion. Histologically, the kidneys show interstitial fibrosis and tubular atrophy without significant glomerular involvement. ADTKD is clinically significant as it leads to end-stage renal disease typically in adulthood, requiring dialysis or transplantation.

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