In 1985 a meeting of colorectal experts known to have an interest in polyposis was organized at Leeds Castle, an historic castle in Kent, UK. In 1989 the Leeds Castle Polyposis Group (LCPG) was formally established.
The International Collaborative Group on Hereditary Non Polyposis Colorectal Cancer (ICG-HNPCC) was conceived in Jerusalem, Israel, in 1989.
In 1990 the first formal meeting of the ICG-HNPCC was organized in Amsterdam, The Netherlands.
In 1997 the first joint meeting of LCPG and ICG-HNPCC took place in Noordwijk, The Netherlands.
At the meeting in Venice in Italy in 2001 it was agreed that the ICG-HNPCC should formally merge with the LCPG to form a new society.
The histories and origins of the Leeds Castle and Polyposis Group can be downloaded via the two links below in pdf form, also you can download the Constitution of the International Society for Gastrointenstinal Hereditary Tumours.
Origins of the Leeds Castle Polyposis Group (PDF 93KB)
History of the International Collaborative Group on Herediatry NonPolyposis Colorectal Cancer (PDF 193KB)
Constitution of the International Society for Gastrointenstinal Hereditary Tumours (PDF 180KB)