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- Title
Fainting Fanconi syndrome clarified by proxy: a case report.
- Authors
Walsh, Stephen Benedict; Unwin, Robert; Kleta, Robert; van't Hoff, William; Bass, Paul; Hussain, Khalid; Ellard, Sian; Bockenhauer, Detlef
- Abstract
<bold>Background: </bold>Rare diseases may elude diagnosis due to unfamiliarity of the treating physicians with the specific disorder. Yet, advances in genetics have tremendously enhanced our ability to establish specific and sometimes surprising diagnoses.<bold>Case Presentation: </bold>We report a case of renal Fanconi syndrome associated with intermittent hypoglycemic episodes, the specific cause for which remained elusive for over 30 years, despite numerous investigations, including three kidney and one liver biopsy. The most recent kidney biopsy showed dysmorphic mitochondria, suggesting a mitochondrial disorder. When her son presented with hypoglycemia in the neonatal period, he underwent routine genetic testing for hyperinsulinemic hypoglycemia, which revealed a specific mutation in HNF4A. Subsequent testing of the mother confirmed the diagnosis also in her.<bold>Conclusion: </bold>Modern sequencing technologies that test multiple genes simultaneously enable specific diagnoses, even if the underlying disorder was not clinically suspected. The finding of mitochondrial dysmorphology provides a potential clue for the mechanism, by which the identified mutation causes renal Fanconi syndrome.
- Subjects
FANCONI syndrome; PEDIATRIC nephrology diagnosis; RARE diseases; MITOCHONDRIAL pathology; HYPOGLYCEMIA in children; KIDNEY disease risk factors; GENETIC mutation; HYPERINSULINISM; DIAGNOSIS; SYNCOPE diagnosis; CELL receptors; GUARDIAN &; ward; LONGITUDINAL method; SYNCOPE; GENETIC testing; DISEASE complications
- Publication
BMC Nephrology, 2017, Vol 18, p1
- ISSN
1471-2369
- Publication type
journal article
- DOI
10.1186/s12882-017-0649-8