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  • Title: Decreased CDKN1C Expression in Congenital Alveolar Rhabdomyosarcoma Associated with Beckwith-Wiedemann Syndrome.
    Author: Piersigilli F, Auriti C, Mondì V, Francalanci P, Salvatori G, Danhaive O.
    Journal: Indian J Pediatr; 2016 Nov; 83(12-13):1476-1478. PubMed ID: 27345568.
    Abstract:
    The Beckwith-Wiedemann syndrome (BWS) is a genetic disorder characterized by somatic overgrowth and predisposition to embryonal tumors, such as Wilm's tumor, hepatoblastoma, neuroblastoma and rhabdomyosarcoma (RMS). BWS is associated with various genetic alterations: a variety of molecular lesions are described on the chromosome 11p15, affecting gene expression for IGF2, H19, CDKN1C and KCNQ1OT1. Alveolar RMS also recognises characteristic genetic alterations: two types of translocations, t(2,13) or t(1,13), that generate the PAX3-FKHR or PAX7-FKHR fusion proteins. It has been postulated however, that in BWS this kind of tumor occurs without this characteristic chromosomal rearrangement. The authors describe case of a neonate with BWS that presented at birth with cutaneous metastasis due to alveolar RMS. Genetic analysis showed lack of the two characteristic translocations in the tumor tissue, supporting a different oncogenic pathway of alveolar RMS in children with BWS.
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