- IGF1 and IGFBP3 tagging polymorphisms are associated with circulating levels of IGF1, IGFBP3 and risk of breast cancer. Al-Zahrani, A., Sandhu, M.S., Luben, R.N., Thompson, D., Baynes, C., Pooley, K.A., Luccarini, C., Munday, H., Perkins, B., Smith, P., Pharoah, P.D., Wareham, N.J., Easton, D.F., Ponder, B.A., Dunning, A.M. Hum. Mol. Genet. (2006)