Intron 2 [IVS2, T-C +4] HFE gene mutation associated with S65C causes alternative RNA splicing and is responsible for iron overload

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• 作者：Annarosa Floreani ; Filippo Navaglia ; Daniela Basso ; Carlo-Federico Zambon ; Giuseppe Basso ; Giuseppe Germano ; Erik Rosa Rizzotto ; Maria Guido and Mario Plebani
• 关键词：Iron overload ; HFE mutations
• 刊名：Hepatology Research
• 出版年：2005
• 出版时间：2005
• 年：2005
• 卷：33
• 期：1
• 页码：57-60
• 全文大小：268 K

文摘

A patient with congenital liver fibrosis revealed a high transferrin saturation index and iron overload on liver biopsy. He did not carry the most frequent HFE mutations: C282Y or H63D. Heterozygosity was detected for S65C. Unknown HFE mutations were also sought using a combined denaturing high performance liquid chromatography (DHPLC)/direct sequence approach and another point mutation, a transition T-C (nt 4910), at the fourth base of the donor splice site of intron 2 [HFE, intervening sequence (IVS) 2, T-C +4] was found. Family screening revealed that a daughter carried both S65C and [IVS2, T-C +4].

Conclusion:

The existence in our proband of a partly-altered HFE protein in the region encoded by exon 2 might be responsible for the histologically-demonstrated iron overload.