RecruitingPhase 2Drug trialABemacicliB or Abemaciclib and HydroxYchloroquine to Target Minimal Residual Disease in Breast CancerThis is a Phase II randomized, controlled, open label breast cancer clinical trial. 66 patients will be enrolled. The drugs being studied are hydroxychloroquine (Plaquenil) and abemaciclib (also Verzenio). This research study is testing whether using these drugs to target the disseminated tumor cells in bone marrow can reduce their number or eliminate them. Both hydroxychloroquine and abemaciclib are pills that will be taken twice daily. Both are approved by the FDA