Lab Research Targets 'Estrogen-Receptor Positive' Breast Cancer Cells; Identifies Key

[Hopeful]

Just thinking out loud, here:

ER+ breast cancer is generally seen as slower growing and less aggressive than ER- bc, albeit less responsive to chemotherapy. If there is a drug that transforms ER+ bc into bc that is more receptive to chemotherapy, do we not run the risk of making the cancer faster growing and more aggressive?

Hopeful