ArticleCEN case reports2022
Clinical exome sequencing uncovers an unsuspected diagnosis of Bartter syndrome type 2 in a child with incidentally detected nephrocalcinosis.
Article in CEN case reports, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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Who cites it
2 citing papers in PubMed, 1 citations in OpenAlex.
- Molecular Genetics of Bartter Syndrome: Bridging Genotype-Phenotype Correlations and Precision Therapeutics.Current issues in molecular biology · 2026Review
- Persistent renal dysfunction post-chemotherapy: a diagnostic conundrum in pediatric cancer survivorship - a case report.BMC pediatrics · 2024Article
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Authors and funding
5 authors at 2 institutions in 1 country.
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Abstract
Nephrocalcinosis is a characteristic feature of both type 1 and type 2 Bartter syndrome. Bartter syndrome type 2 presents antenatally and very early in life. Late-onset presentation with isolated nephrocalcinosis is extremely rare. We describe an 11-year-old girl with incidentally detected medullary nephrocalcinosis on renal ultrasonography. She was clinically suspected to have primary hyperoxaluria based on high urine oxalate. However, clinical exome sequencing revealed a pathogenic missense variant in the KCNJ1 gene leading to the molecular diagnosis of Bartter syndrome type 2. Both parents were heterozygous carriers of the same variant. Subsequent investigations did reveal a mild Bartter syndrome phenotype with mild metabolic alkalosis, high urine chloride and high renin and aldosterone. Our case illustrates phenotypic heterogeneity of Bartter syndrome type 2 and the usefulness of genetic testing in establishing the correct diagnosis and guiding further management in such cases.
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