1054 Risk of extracolonic cancers for people with biallelic and monoallelic mutations in MUTYH

A Win, J Reece, J Dowty, D Buchanan, M Clendenning, J Young, S Cleary, M Cotterchio, F Macrae, J Baron, L Le Marchand, G Casey, R Haile, P Newcomb, S Thibodeau, J Hopper, S Gallinger, I Winship, N Lindor, M Jenkins