NDAINTRAMUSCULARSOLUTION
Approved
Aug 2019
Lifecycle
Peak
Competitive Pressure
30/100
Clinical Trials
20
Data completeness
3/8 — Basic
FULVESTRANT (fulvestrant) by Viatris is estrogen receptor antagonists [moa]. First approved in 2019.
Drug data last refreshed 18h ago · AI intelligence enriched 1w ago
AI summarySynthesized from FDA + DailyMed + ClinicalTrials.gov data
Fulvestrant is an estrogen receptor antagonist administered via intramuscular injection for the treatment of hormone receptor-positive breast cancer. It works by binding to and degrading estrogen receptors, blocking estrogen signaling in cancer cells. This mechanism differentiates it from selective estrogen receptor modulators (SERMs) by providing complete receptor antagonism.
Peak
Fulvestrant is at peak lifecycle stage with moderate competitive pressure (30%), indicating stable commercial teams focused on market defense and managed-care penetration rather than rapid expansion.
Mechanism of Action
Estrogen Receptor Antagonists
Indications
Indication data is being enriched from DailyMed and FDA labeling. Check back soon for approved therapeutic uses.
Clinical Trials (20)
A Study Evaluating the Safety of Inavolisib and Fulvestrant With or Without Palbociclib in Participants With Advanced Breast Cancer (ABC) and Type 2 Diabetes
Started Oct 2026
40 enrolled
Breast CancerDiabetes Type II
A Phase II Study of Zongertinib Plus Fulvestrant in Participants With HR-positive/HER2-negative Advanced Breast Cancer Harboring HER2 Mutations.
Started Oct 2026
25 enrolled
Advanced Breast CancerHormone Receptor Positive / HER2-negative Breast CancerHER2 Mutation
Clinical Trial Evaluating the Biological Activity of a New Drug Identified as Prifetrastat (PF-07248144), Combined With Fulvestrant for the Treatment of Patients With Hormone Receptor Positive (HR+) and HER2 Negative (HER2-) Breast Cancer Extended to Other Organs.
Started Sep 2026
51 enrolled
Metastatic (Stage IV) Melanoma
A Phase ll, Interventional, Single-arm Study Evaluating the Efficacy and Safety of Inavolisib Plus Ribociclib and Fulvestrant in Chinese Patients With PIK3CA-mutant, HR-positive, HER2-negative Locally Advanced or Metastatic Breast Cancer.
Started Jun 2026
160 enrolled
Breast Cancer
A Phase II Study Evaluating the Efficacy and Safety of Inavolisib Plus Ribociclib Plus Fulvestrant Versus Placebo Plus Ribociclib Plus Fulvestrant in Participants With Advanced Breast Cancer
Started Apr 2026
80 enrolled
Breast Cancer
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Data Sources
- Drug label: DailyMed / FDA
- Clinical trials: ClinicalTrials.gov
- Patent data: FDA Orange Book
- Spending data: CMS Medicare
The information on this page is for informational purposes only and should not be used as a substitute for professional medical advice. Drug information is sourced from FDA, DailyMed, and other government databases. Adverse event data from FAERS does not establish causation. Always consult a healthcare professional for medical decisions.