Phenylalanine hydroxylase gene mutations in phenylketonuria patients from India: Identification of novel mutations that affect PAH RNA
2010
Abstract Analysis of seven Indian phenylketonuria families has revealed four novel mutations in the phenylalanine hydroxylase gene; two affected consensus splice sequence and the 3′ UTR, respectively, while the other two were single base insertion and deletion mutations, respectively. A novel 3′ splice site mutation c.168-2A>G resulted in the activation of a cryptic 3′ splice site that generated a premature termination codon leading to very low levels of the mutant transcript, probably due to activation of the nonsense-mediated decay (NMD) pathway. This is probably the first report of PKU caused by the activation of NMD.
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