A case report of Gitelman syndrome resulting from two novel mutations in SLC12A3 gene

Abstract

Introduction: Hypokalaemia is a common clinical problem. A potential but commonly overlooked cause of hypokalaemia is Gitelman syndrome. Material and methods: A 26-year-old man was admitted to the hospital due to syncope with general and muscular weakness and muscle cramps. The patient's history revealed previous recurrent syncope events associated to hypokalaemia with the lowest serum potassium value being 2.6 mmol/l. At admission, blood pressure was normal and no changes were found at physical examination. Laboratory tests showed mild hypokalaemia (3.0 mmol/l), hypomagnesaemia (1.36 mg/dl), hypocalciuria (A were found in transcript NM_000339.2 in SLC12A3 gene. Conclusion: The patient was diagnosed with Gitelman syndrome and was treated with supplements of potassium and magnesium.

Keywords

• Hypokalaemia
• Hypomagnesaemia
• Diuretics