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  • Title: Retinoblastoma and subband deletion of chromosome 13.
    Author: Yunis JJ, Ramsay N.
    Journal: Am J Dis Child; 1978 Feb; 132(2):161-3. PubMed ID: 626181.
    Abstract:
    Two patients with retinoblastoma and an interstitial deletion of the long arm of chromosome 13 were studied using G-banded metaphase and prophase chromosomes. One patient showed several congenital defects, developmental retardation, and deletion of bands q14 and q21. The second patient showed mild developmental delay, a few minor congenital defects, and a loss of approximately half of band q14. On the basis of this study and nine others from the literature, it is now possible to tentatively assign a predisposition to retinoblastoma to deletion of a specific small region of chromosome 13.
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