- Inherited mutations in PTEN that are associated with breast cancer, cowden disease, and juvenile polyposis. Lynch, E.D., Ostermeyer, E.A., Lee, M.K., Arena, J.F., Ji, H., Dann, J., Swisshelm, K., Suchard, D., MacLeod, P.M., Kvinnsland, S., Gjertsen, B.T., Heimdal, K., Lubs, H., Møller, P., King, M.C. Am. J. Hum. Genet. (1997)