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. 2013 Oct 22;11(1):15.
doi: 10.1186/1897-4287-11-15.

Familial adenomatous polyposis of the colon

Andrzej Plawski, Tomasz Banasiewicz, Pawel Borun, Lukasz Kubaszewski, Piotr Krokowicz, Marzena Skrzypczak-Zielinska, Jan Lubinski  1
Affiliations

Familial adenomatous polyposis of the colon

Andrzej Plawski et al. Hered Cancer Clin Pract. .

Abstract

Familial adenomatous polyposis (FAP) is a well-defined autosomal dominant predisposition to the development of polyposis in the colon and rectum at unusually early ages. The first symptoms of FAP are diarrhea and blood in the stool. Weight loss and weaknesses occur after the development of advanced tumour. The incidence of the FAP disorder is one per 10000 newborns. There are high levels of heterogeneity with regard to the number and timing of the occurrence of polyps. The classical form of FAP is characterized by the presence of more than 100 polyps, which appear in the second decade of life. The average time of occurrence of polyps is 15 years. The earliest symptoms of polyposis have been observed in a three-year-old child. The polyps are characterized by large potential for the development towards malignant tumour. Malignancy can occur from late childhood onwards. Attenuated adenomatous polyposis coli is characterized by a more benign course of disease in contrast to classical FAP. The occurrence of FAP is associated with mutations in the APC tumour suppressor gene, which was described in 1991. The APC gene is located on chromosome 5q21 and is involved in cell proliferation control. A recessive form of adenomatous polyposis is caused by mutations in the base excision repair gene - MUTYH gene. The MUTYH gene is involved in repairing DNA lesions as a result of oxidative DNA damage. MUTYH associated polyposis (MAP) is a predisposition to the development of polyps of the colon but the number of polyps is lower in comparison to classical FAP. The high risks of cancer observed in these two diseases make them important medical issues. Molecular studies of colonic polyposis have been performed in Poland for over fifteen years. A DNA Bank for Polish FAP patients was established at the Institute of Human Genetics in Poznan in which DNA samples from 600 FAP families have been collected.

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Figures

Figure 1
Figure 1
Role of the APC protein in cell cycle regulation.
Figure 2
Figure 2
Molecular diagnostic of FAP.
See this image and copyright information in PMC

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References

    1. Groden J. et al.Identification and characterization of the familial adenomatous polyposis coli gene. Cell. 1991;66(3):589–600. doi: 10.1016/0092-8674(81)90021-0. - DOI - PubMed
    1. Bisgaard ML. et al.Familial adenomatous polyposis (FAP): frequency, penetrance, and mutation rate. Hum Mutat. 1994;3(2):121–125. doi: 10.1002/humu.1380030206. - DOI - PubMed
    1. Lynch HT, Smyrk TC. Identyfying hereditary nonpolyposis colorectal cancer. N Engl J Med. 1998;338:1537–1538. doi: 10.1056/NEJM199805213382109. - DOI - PubMed
    1. Distante S. et al.Familial adenomatous polyposis in a 5 year old child: a clinical, pathological, and molecular genetic study. J Med Genet. 1996;33(2):157–160. doi: 10.1136/jmg.33.2.157. - DOI - PMC - PubMed
    1. Al-Tassan N. et al.Inherited variants of MYH associated with somatic G:C T:A mutations in colorectal tumors. Nat Genet. 2002;30(2):227–232. doi: 10.1038/ng828. - DOI - PubMed