What question did this study set out to answer?

To highlight the importance of genetic insights and management in aldosterone synthase deficiency.

January 10, 2026Clinical Case Reports0 citationsOpen Access

Genetic Insights and Lifelong Management of Aldosterone Synthase Deficiency: A Case of Hyperreninemic Hypoaldosteronism

MAMian Muhammad Hassan AhmedPakistan Institute of Medical Sciences RWRehmana Waris SBSamra BatoolPakistan Institute of Medical Sciences

Key Result

Routine newborn electrolyte screening after 5 days of life is crucial for early detection and management of aldosterone synthase deficiency, preventing life-threatening crises.

Key Points

To highlight the importance of genetic insights and management in aldosterone synthase deficiency.
Case analysis of aldosterone synthase deficiency
Routine newborn electrolyte screening
Genetic confirmation of the condition
Implementation of fludrocortisone therapy
Early electrolyte screening enables timely diagnosis
Genetic confirmation facilitates targeted treatment
Fludrocortisone therapy improves growth and development outcomes

Structured PICO

Does fludrocortisone therapy improve electrolyte balance and growth in a pediatric patient with aldosterone synthase deficiency?

Population

16-month-old boy (n=1) born at full term to consanguineous parents, presenting with severe dehydration, failure to thrive, hyponatremia, and hyperkalemia due to hyperreninemic hypoaldosteronism (aldosterone synthase deficiency with homozygous CYP11B2 mutation).

Intervention

Fludrocortisone therapy (started at 0.1 mg/day, gradually increased to 0.3 mg/day) and oral normal saline.

Outcome

Normalization of electrolyte levels and weight gain/developmental improvement.

Genetic confirmation of a CYP11B2 mutation enables targeted fludrocortisone therapy in aldosterone synthase deficiency, leading to favorable growth and electrolyte stability in a pediatric patient.

Main Result

Absolute Event Rate: 0% vs 0%

Abstract

ABSTRACT Aldosterone synthase deficiency is a rare cause of neonatal salt‐wasting and failure to thrive. Routine newborn electrolyte screening after 5 days of life is vital for early detection and prevention of life‐threatening crises. Genetic confirmation enables targeted fludrocortisone therapy, ensuring favorable growth and developmental outcomes.

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