Some of the esoteric (brain fog at the moment) but useful information are in the detail which lead to chasing down references for more.
Nguyen
Standard of Care in Hormone Receptor–Positive Metastatic Breast Cancer: Can We Improve the Current Regimens or Develop Better Selection Tools?
https://ascopubs.org/doi/full/10.1200/OP.21.00707
CDK 4/6 Inhibitors: Evolution and Revolution in the Management of ER1 Metastatic Breast Cancer
https://ascopubs.org/doi/pdfdirect/10.1200/OP.21.00611
Clinical Review on the Management of Hormone Receptor–Positive Metastatic Breast Cancer
https://ascopubs.org/doi/pdfdirect/10.1200/OP.21.00384