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Link to original content: https://pubmed.ncbi.nlm.nih.gov/10439970/
Marfan-like habitus and familial adenomatous polyposis in two unrelated males: a significant association? - PubMed Skip to main page content
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Case Reports
. 1999 Jul;7(5):609-14.
doi: 10.1038/sj.ejhg.5200350.

Marfan-like habitus and familial adenomatous polyposis in two unrelated males: a significant association?

G Calin  1 , J Wijnen, H van der Klift, A Ionita, A Mulder, C Breukel, R Smits, H Dauwerse, K Hansson, S Calin, D Stefanescu, A Oproiu, R Fodde
Affiliations
Case Reports

Marfan-like habitus and familial adenomatous polyposis in two unrelated males: a significant association?

G Calin et al. Eur J Hum Genet. 1999 Jul.

Abstract

Familial adenomatous polyposis (FAP) can be considered as a condition of the whole body as extracolonic features derived from all the three embryonic lineages are recorded with varying frequency in addition to the presence of multiple adenomas in the large intestine. Here, we describe two unrelated cases of FAP with unusual extracolonic phenotypes, namely several abnormalities of mesodermal origin strongly resembling Marfan syndrome (MFS) or a Marfan-like habitus. Conventional cytogenetic and FISH analysis did not reveal any gross chromosomal rearrangement on the long arm of chromosome 5 where the APC and FBN2 genes were located. However, in case 2 the FAP-causing mutation in the APC gene was found in the donor splice site of exon 4 and was shown to result in a frameshift and a premature termination codon. We propose that such connective tissue abnormalities may result from germline APC mutations in combination with specific genetic and/or environmental modifying factors.

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