For T1N1M0 ER positive tumors, I first do a Mammaprint. In MINDACT, Mammaprint low risk ER + N+ (up to three nodes) tumors had no improvement in 5 year DDFS (still about 94-95%) with the addition of chemotherapy to endocrine therapy.If the woman had a high risk Mammaprint, I would give AC x 4 follo...