Journal
ACTA OPHTHALMOLOGICA
Volume 96, Issue 1, Pages 95-99Publisher
WILEY
DOI: 10.1111/aos.13492
Keywords
cataract; ferritin; iron-responsive element; point mutation
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PurposeTo present a novel Finnish double nucleotide variant in the iron-responsive element (IRE) of the ferritin L-chain gene (FTL) leading to hyperferritinaemia-cataract syndrome (HHCS). MethodsGenomic DNA extracted from peripheral blood leucocytes and synthetized with three different primers flanking the IRE in the FTL 5-untranslated region of the FTL was used in polymerase chain reaction (PCR). Thereafter, Sanger sequencing was performed on the 487-bp and 602-bp PCR amplification products with specific primers to reveal FTLIRE mutations. ResultsA 58-year-old female patient with elevated serum ferritin level (1339g/l) was diagnosed with HHCS after extensive workup. Genetic testing identified a novel double point mutation g.48965355G>C (chr19, hg19) and g.48965356G>T (chr19, hg19) in the lower stem region of the IRE canonical structure of the FTL. ConclusionAfter excluding other causes, elevated serum ferritin level in a person with early onset cataract is indicative for HHCS, a genetic disorder caused by mutation in the IRE of the FTL.
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