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  • Title: Silent APC (adenomatous polyposis coli) gene polymorphism in the Portuguese population.
    Author: Marshall B, Isidro G, Boavida MG.
    Journal: Gene Geogr; 1995 Dec; 9(3):207-10. PubMed ID: 8740899.
    Abstract:
    We describe a new, silent polymorphism in exon 15 of the APC gene on chromosome 5q in the Portuguese population. The polymorphism is located at codon 1442 and results in a CCT-->CCA (Pro) base transversion, with no amino acid change. Population analysis in unrelated healthy controls indicated that the polymorphism was present in 2 out of 50 individuals giving an allele frequency of 0.02 +/- 0.01. The polymorphism is the most common encountered in the Portuguese population in the mutation cluster region of exon 15, and has not been previously described in other populations.
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