Hereditary mixed polyposis syndrome due to a BMPR1A mutation |
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| Authors: | J. M. O’Riordan D. O’Donoghue A. Green D. Keegan L. A. Hawkes S. J. Payne K. Sheahan D. C. Winter |
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| Affiliation: | 1. The Centre for Colorectal Disease, St Vincents’ University Hospital, Elm Park, Dublin, Ireland;2. The National Centre for Medical Genetics, Our Lady’s Childrens Hospital, Crumlin, Dublin, Ireland;3. The North West Thames Regional Genetics Service, Northwick Park Hospital, Harrow, UK |
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| Abstract: | The conditions Juvenile Polyposis Syndrome (JPS) and Hereditary Mixed Polyposis Syndrome (HMPS) are associated with an increased risk of colorectal carcinoma. The genetic mechanisms which explain these conditions have until recently been poorly understood. Recent interest has focused on the transforming growth factor (TGF)‐β signalling pathway and, in particular, on mutations in the SMAD4 gene. However, not all cases of JPS and HMPS have mutations in SMAD4 and focus has now shifted to other components of the TGF‐β pathway to clarify the genetic mechanisms involved in these conditions. In this report, we describe the significance of a bone morphogenetic protein receptor type 1A gene mutation in an Irish family. |
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| Keywords: | Juvenile polyposis syndrome hereditary mixed polyposis syndrome bone morphogenetic protein receptor transforming growth factor |
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