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  • Title: Mucopolysaccharidosis IVA: a novel splice acceptor site mutation in intron 4 of the N-acetylgalactosamine-6-sulfate sulfatase gene in an Afghanistan girl with classical Morquio disease.
    Author: Fukuda S, Yamada N, Tomatsu S, Sukegawa K, Montaño AM, Hopwood JJ, Muller V, Orii T, Kondo N.
    Journal: Jpn J Hum Genet; 1997 Jun; 42(2):317-22. PubMed ID: 9290256.
    Abstract:
    We report here a novel splice site mutation in intron 4 of the gene for N-acetylgalactosamine-6-sulfate sulfatase (GALNS) in an Afghanistan girl with severe mucopolysaccharidosis IVA (classical Morquio disease). Direct sequencing revealed a homozygous G to A transition in the conserved splice acceptor site in intron 4 (cagG-->caaG: designated IVS 4(-I) G-->A) which eliminates 144 nucleotides of exon 5 in her GALNS transcript and introduces an immediate premature termination codon (at Trp 141 of exon 4). The IVS 4(-1) G-->A has not been seen in other populations and this is the first report of the molecular basis of classical Morquio disease in an Afghanistan patient.
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