Tamoxifen
Her2-Receptor Negative Breast Cancer
Explore 186 assets in Her2-Receptor Negative Breast Cancer →Floatz Rating
BB64/100
Confidence
Indicative
Sponsor
University of Chicago
Modality
Small molecule
Development Phase
Phase 4 / Approved
Status
Active
Evidence ledger · v0.2
Clinical Evidence
Clinical track record: trial progression, reported outcomes, safety signals, and endpoint quality.
63High confidence
Detailed axis rationale is planned and will be published soon.
| Trial | Phase | Status | N | Primary endpoint | Readout |
|---|---|---|---|---|---|
NCT06348134CT.gov Assessing the Efficacy and Safety of Anti-HER2 Therapy in Nigerian Women With HER2+ Breast Cancer Before and After Surgery | — | Recruiting | — | — | — |
NCT06179303CT.gov Functional Imaging in Prediction of Response to Abemaciclib for Advanced Hormone Receptor-Positive, HER2-Negative Breast Cancer | — | Recruiting | — | — | — |
NCT05512364CT.gov Elacestrant for Treating ER+/HER2- Breast Cancer Patients With ctDNA Relapse (TREAT ctDNA) | — | Recruiting | — | — | — |
NCT05826964CT.gov Levels of Circulating Tumor DNA as a Predictive Marker for Early Switch in Treatment for Patients With Metastatic (Stage IV) Breast Cancer | — | Active Not Recruiting | — | — | — |
NCT05101564CT.gov Umbrella Trial of Subtype-Targeted Therapies in ER+/HER2- Breast Cancer | — | Completed | — | — | — |
NCT05333328CT.gov OFS in Premenopausal Node+ Breast Cancer With Low Genomic Risk | — | Recruiting | — | — | — |
NCT05982093CT.gov Elacestrant With/Without Triptorelin in Premenopausal Women With Luminal Breast Cancer | — | Recruiting | — | — | — |
NCT04985266CT.gov A Trial of Early Detection of Molecular Relapse With Circulating Tumour DNA Tracking and Treatment With Palbociclib Plus Fulvestrant Versus Standard Endocrine Therapy in Patients With ER Positive HER2 Negative Breast Cancer | — | Recruiting | — | — | — |
NCT04504331CT.gov Study of Infigratinib in Combination With Tamoxifen in Hormone Receptor Positive, HER2 Negative, FGFR Altered Advanced Breast Cancer | — | Terminated | — | — | — |
NCT03554044CT.gov T-VEC With Chemotherapy or Endocrine Therapy in Treating Participants With HER2- Negative Breast Cancer | — | Completed | — | — | — |
Show 3 more trialsShow fewer
NCT03691493CT.gov Radiation Therapy, Palbociclib, and Hormone Therapy in Treating Breast Cancer Patients With Bone Metastasis | — | Completed | — | — | — |
NCT02668666CT.gov Palbociclib in Combination With Tamoxifen as First Line Therapy for Metastatic Hormone Receptor Positive Breast Cancer | — | Completed | — | — | — |
NCT02269670CT.gov Phase II Study of Everolimus Beyond Progression | — | Terminated | — | — | — |
Competitive Position
Competitive setting: how crowded the indication is, class-level failures, and timing against rivals.
65High confidence
Detailed axis rationale is planned and will be published soon.
Same indication · Her2-Receptor Negative Breast Cancer
| Asset | Sponsor | Phase | Rating |
|---|---|---|---|
| Tamoxifen (this asset) | University of Chicago | Approved | BB · 64 |
| Palbociclib | Helwan University | P2 | BBB |
| Exemestane | National Cancer Institute (NCI) | P4 | BBB |
| Pembrolizumab | UNC Lineberger Comprehensive Cancer Center | P2 | BBB |
| Atezolizumab | TransThera Sciences (Nanjing), Inc. | P2 | BB |
| Palazestrant | Olema Pharmaceuticals, Inc. | P3 | BB |
| Durvalumab | National Cancer Institute (NCI) | P3 | BB |
| Capecitabine | Kristina A. Fanucci | P4 | BB |
| Docetaxel | Jiangsu Hansoh Pharmaceutical Co., Ltd. | P2/3 | BB |
+42 more in the Her2-Receptor Negative Breast Cancer cohort
Other indications for Tamoxifen
| Indication | Sponsor | Phase | Rating |
|---|---|---|---|
| Breast Carcinoma | — | P4 | BBB · 75 |
| Invasive Breast Carcinoma | — | P4 | BBB · 75 |
| Breast Fibroadenoma | — | P4 | BBB · 73 |
Scientific Foundation
Strength of the underlying biology: target validation, tractability, modality fit, and how related mechanisms have fared.
NR
Planned for methodology v0.2.
Development Feasibility
How realistically the program can be executed, drawing on modality precedent, enrollment dynamics, and sponsor delivery.
NR
Planned for methodology v0.2.
Commercial Opportunity
Commercial prize: addressable population, unmet need, and the value case for the indication.
NR
Planned for methodology v0.2.
IP & Exclusivity
Exclusivity position, covering patent protection and freedom-to-operate runway.
NR
Planned for methodology v0.2.
Manufacturing & Supply
Manufacturing and supply readiness, driven by modality process and scale-up risk.
NR
Planned for methodology v0.2.
Related assets
Citation
Floatz Terminal. Tamoxifen in Her2-Receptor Negative Breast Cancer. Methodology v0.2. Rated under v0.2 effective July 8, 2026. Last refreshed July 8, 2026. Accessed July 14, 2026. https://terminal.floatz.ai/assets/tamoxifen-her2-receptor-negative-breast-cancer
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