Comparative Study of CDK4 6 Inhibitors in Combination with Endocrine Therapy vs. Endocrine Therapy Alone for Hormone Receptor Positive, HER2 Negative Metastatic Breast Cancer A Retrospective Study in Egypt

Endocrine therapy provides the cornerstone for treating estrogen receptor positive breast cancer, but certain tumors have intrinsic resistance, and developed resistance to hormone treatment is unavoidable in metastatic illness.