Research use only — not FDA-cleared, not medical advice. Always consult FDA-approved labeling and a qualified clinician.

Home/Biomarker

Hormone receptor positive (ER+/PR+)

Gene: ESR1 · Type: expression

Indications: Breast cancer

Sensitivity Resistance CIViC Context

FDA Sensitivity Assertions

Drug	Indication	Recommendation	FDA Source	Link
Anastrozole	Breast cancer	INDICATED	FDA Label	Label
Letrozole	Breast cancer	INDICATED	FDA Label	Label
Exemestane	Breast cancer	INDICATED	FDA Label	Label
Tamoxifen	Breast cancer	INDICATED	FDA Label	Label
Fulvestrant	Breast cancer	INDICATED	FDA Label	Label
Toremifene	Breast cancer	INDICATED	FDA Label	Label
Palbociclib	Breast cancer	INDICATED	FDA Label	Label
Ribociclib	Breast cancer	INDICATED	FDA Label	Label
Abemaciclib	Breast cancer	INDICATED	FDA Label	Label
Elacestrant	Breast cancer	INDICATED	FDA Label	Label