RecruitingPhase 2Drug trialBRE-04: Window of Opportunity Trial of Preoperative Low Dose Azacitidine in High-Risk Early Stage Breast CancerTo determine the effect of low dose azacitidine therapy on tumor infiltrating lymphocytes (TILs) in primary tumors from patients with high-risk early stage breast cancer, paired t-tests will be first used to compare TIL count in pre- and post-treatment specimens.