TGFBR1 and breast cancer: In the Kaklamani 200526 study that included >80% Caucasians from New York, NY, TGFBR1*6A association with breast cancer risk was significant under both dominant (OR 1.50, 95% CI 1.07-2.11) and additive (OR 1.46, 95% CI 1.04-2.06) models.