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Adolescent nephronophthisis — Clinical Guidelines

Overview

Nephronophthisis in adolescents is a rare genetic disorder characterized by progressive renal failure due to tubulo-interstitial disease, often presenting with chronic kidney disease and associated complications such as hypertension and anemia. 36 40

Diagnosis

Clinical presentation includes chronic kidney disease, polyuria, polydipsia, and fatigue.

Genetic testing for mutations in genes associated with nephronophthisis (e.g., NPHP1, INVS).

Renal ultrasound showing small kidneys with reduced corticomedullary differentiation.

Laboratory tests: elevated serum creatinine, decreased glomerular filtration rate (GFR), and electrolyte imbalances. 36 40

Management

Supportive care: Management of hypertension, anemia, and electrolyte imbalances.

Dietary modifications: Low-protein diet to reduce uremic symptoms.

Growth factors: Erythropoietin for anemia management. 36 40

Regular monitoring: Frequent follow-ups to assess renal function and adjust treatments as needed.

Special Populations

Pediatrics: Early diagnosis and multidisciplinary care are crucial due to the chronic nature of the disease and its impact on growth and development. 36

Comorbidities: Management of associated conditions like hypertension and anemia requires tailored approaches, often necessitating close collaboration with specialists. 36

Key Recommendations

Genetic testing for suspected cases to confirm diagnosis and identify specific mutations (Evidence: Moderate 36).

Multidisciplinary care involving nephrologists, pediatricians, and geneticists to address complex needs (Evidence: Expert opinion 36).

Regular monitoring of renal function and nutritional status to manage complications effectively (Evidence: Moderate 36).

Supportive therapies such as erythropoietin for anemia and dietary management to mitigate uremic symptoms (Evidence: Moderate 36).

Confidentiality and adolescent-centered care to ensure engagement and adherence to treatment plans (Evidence: Expert opinion 15 16).

References

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Adolescent nephronophthisis