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  • Title: Deletion of small nuclear ribonucleoprotein polypeptide N (SNRPN) in Prader-Willi syndrome detected by fluorescence in situ hybridization: two sibs with the typical phenotype without a cytogenetic deletion in chromosome 15q.
    Author: Ishikawa T, Kibe T, Wada Y.
    Journal: Am J Med Genet; 1996 Apr 24; 62(4):350-2. PubMed ID: 8723064.
    Abstract:
    The small nuclear ribonucleoprotein polypeptide N (SNRPN) gene is regarded as one of the candidates for Prader-Willi syndrome (PWS). We describe two sibs with typical PWS presenting deletion of SNRPN detected by fluorescence in situ hybridization (FISH). Neither a cytogenetically detectable 15q12 deletion nor a deletion for the D15S11, D15S10, and GABRB3 cosmid probes were found in either patient. This implies a smaller deletion limited to the PWS critical region. FISH with a SNRPN probe will permit analysis of PWS patients with limited deletions not detectable with other probes.
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