Drug or intervention
Tamoxifen Clinical Trials
Studies that test Tamoxifen, alone, with other treatments or as the comparison.
In numbers
Open to volunteers: recruiting, not yet recruiting or enrolling by invitation. Active adds studies under way that have stopped recruiting.
Open to volunteers
All 89HER2-positive Breast Cancer, Breast Cancer
A Study of Skipping Radiation Therapy in People With Breast Cancer
The purpose of this study is to find out whether it is safe to skip (omit) radiation therapy to the breast after lumpectomy in people with low-risk HER2-positive breast cancer who are receiving HER2-targeted therapy.
- Trial name
- SuperHERO (NCT07895511)
- Testing
- HER2-targeted therapy, Tamoxifen, No Radiation Therapy
- Where
- 7 sites in United States
- Volunteers
- 136 people
- Sponsor
- Memorial Sloan Kettering Cancer Center
Liposarcoma, Prostate Cancer
Study to Test the Safety and Tolerability of PF-07220060 in Participants With Advance Solid Tumors
This is a Phase 1/2A, open label, multicenter, nonrandomized, multiple dose, safety, tolerability, pharmacokinetic and pharmacodynamic study of PF-07220060 administered as a single agent and in combination with endocrine therapy.
- Conditions
- Liposarcoma, Prostate Cancer, Advanced Breast Cancer, NSCLC (Non-small Cell Lung Cancer)
- Trial name
- CDK4i (NCT04557449)
- Testing
- PF-07220060, Letrozole, Fulvestrant
- Where
- 39 sites in United States, Argentina and 6 more
- Volunteers
- 430 people
- Sponsor
- Pfizer
Breast Cancer
Tolerability of Dalpiciclib vs. Abemaciclib/Ribociclib in Early HR+/HER2- Breast Cancer
In recent years, the successful application of cyclin-dependent kinase 4/6 inhibitors (CDK4/6i) has transformed the treatment landscape for HR+/HER2- advanced breast cancer and driven research into their use in adjuvant settings.
- Trial name
- NCT07706933
- Testing
- Dalpiciclib, Abemaciclib/Ribociclib
- Volunteers
- 456 people
- Sponsor
- Henan Cancer Hospital
Ductal Carcinoma in Situ
DCIS: RECAST Trial Ductal Carcinoma In Situ: Re-Evaluating Conditions for Active Surveillance Suitability as Treatment
The goal of this trial is to see if active surveillance monitoring and hormonal therapy in patients diagnosed with ductal cell carcinoma in situ (DCIS), an early stage of breast cancer, can be an effective management of the…
- Trial name
- NCT06075953
- Testing
- Tamoxifen, Exemestane, Letrozole
- Where
- 30 sites in United States
- Volunteers
- 400 people
- Sponsor
- QuantumLeap Healthcare Collaborative
Breast Cancer
Safety Extension Study for Subjects With HR+, HER2- Breast Cancer for Subjects Who Have Completed the OVELIA Study
TOL2506A (OVELIA) is a Phase 3, single arm, open-label study evaluating the effectiveness of TOL2506 in suppressing ovarian function in premenopausal women with HR+, HER2-negative breast cancer and men with HR+ breast cancer.
- Trial name
- NCT05645536
- Testing
- TOL2506, Tamoxifen, Letrozole tablets
- Where
- 46 sites in United States, Argentina and 4 more
- Volunteers
- 250 people
- Sponsor
- Tolmar Inc.
Hypogonadism, Prostate Cancer
Clinical Trial to Observe the Effects of Tamoxifen on Testosterone Recovery in Medically Castrated Prostate Cancer Patients
Androgen deprivation therapy (ADT) is a cornerstone therapy in the treatment of curable prostate cancer (PCa). However, ADT often leads to a protracted testosterone recovery period in most men or absence of complete recovery in…
- Trial name
- REVIVE (NCT07535905)
- Testing
- Tamoxifen
- Where
- Canada
- Volunteers
- 96 people
- Sponsor
- University Health Network, Toronto
Breast Cancer
Molecular Analyses to Predict Pathways of Endocrine Resistance Following Short Term Neoadjuvant Endocrine Treatment in Patients With Hormone Receptor-Positive HER2-negative Breast Cancer
This is an exploratory phase II interventional study that initiates standard-of-care anti-estrogen treatment preoperatively for 4-12 weeks (+/- 2 weeks).
- Trial name
- MAPPER (NCT06361940)
- Testing
- Aromatase inhibitors or tamoxifen
- Where
- United States
- Volunteers
- 185 people
- Sponsor
- Medical College of Wisconsin
Ductal Carcinoma in Situ
Prototype DAA/TAA Vaccine Targeting MUC1 for Immune Interception and Prevention in Ductal Carcinoma In Situ
Women with biopsy-proven ductal carcinoma in situ (DCIS) will be enrolled into two cohorts. One cohort will receive neoadjuvant therapy with an aromatase inhibitor or selective estrogen receptor modulator (SERM) for about 12…
- Trial name
- NCT06218303
- Testing
- MUC1 Peptide Vaccine, Hiltonol®, Aromatase Inhibitor
- Where
- United States
- Volunteers
- 50 people
- Sponsor
- Finn, Olivera, PhD
Metastatic Breast Cancer
A Study to Evaluate the Efficacy and Safety of Inavolisib in Combination With Phesgo Versus Placebo in Combination With Phesgo in Participants With PIK3CA-Mutated HER2-Positive Locally Advanced or Metastatic Breast Cancer
This study will evaluate the efficacy and safety of inavolisib in combination with Phesgo (pertuzumab, trastuzumab, and rHuPH20 injection for subcutaneous use) compared with placebo in combination with Phesgo, as maintenance…
- Trial name
- INAVO122 (NCT05894239)
- Testing
- Inavolisib, Phesgo, Taxane-based Chemotherapy
- Where
- 192 sites in United States, Argentina and 27 more
- Volunteers
- 230 people
- Sponsor
- Hoffmann-La Roche
Breast Carcinoma
Neutrophil Extracellular Traps Formation in Breast Cancer Patients Taking Tamoxifen
This study examines the long-term effects of tamoxifen (TAM) treatment on excessive production of neutrophil extracellular traps (NET) and their impact on breast cancer and side effects.
- Trial name
- NCT05056857
- Testing
- Biospecimen Collection, Electronic Health Record Review
- Where
- United States
- Volunteers
- 290 people, healthy volunteers welcome
- Sponsor
- M.D. Anderson Cancer Center
Completed, with results posted
All 108Metastatic Breast Cancer
A Study of Abemaciclib (LY2835219) Plus Tamoxifen or Abemaciclib Alone in Women With Metastatic Breast Cancer
The main purpose of this study is to evaluate the safety and efficacy of abemaciclib plus tamoxifen or abemaciclib alone in women with previously treated hormone receptor-positive (HR+), human epidermal growth factor receptor 2…
- Trial name
- Next MONARCH 1 (NCT02747004)
- Testing
- Abemaciclib, Tamoxifen, Prophylactic Loperamide
- Where
- 59 sites in United States, Argentina and 12 more
- Volunteers
- 234 people
- Sponsor
- Eli Lilly and Company
Metastatic Breast Cancer
ER Reactivation Therapy for Breast Cancer
Before anti-estrogens such as tamoxifen were developed to treat estrogen receptor (ER)-positive breast cancer, high-dose estrogen therapies were used.
- Trial name
- POLLY (NCT02188745)
- Testing
- 17B-estradiol, Letrozole, Anastrozole
- Where
- 3 sites in United States
- Volunteers
- 20 people
- Sponsor
- Dartmouth-Hitchcock Medical Center
Invasive Breast Carcinoma, Recurrent Breast Carcinoma
Tamoxifen Citrate or Letrozole With or Without Bevacizumab in Treating Women With Stage IIIB or Stage IV Breast Cancer
This randomized phase III trial studies tamoxifen citrate or letrozole together with bevacizumab to see how well it works compared with tamoxifen citrate or letrozole alone in treating women with stage IIIB or stage IV breast…
- Conditions
- Invasive Breast Carcinoma, Recurrent Breast Carcinoma, Stage III Breast Cancer AJCC v6, Stage IV Breast Cancer AJCC v6 and v7
- Trial name
- NCT00601900
- Testing
- Bevacizumab, Laboratory Biomarker Analysis, Letrozole
- Where
- 522 sites in United States, Puerto Rico
- Volunteers
- 394 people
- Sponsor
- National Cancer Institute (NCI)
Estrogen Receptor Positive Breast Cancer, Progesterone Receptor Positive Tumor
Suppression of Ovarian Function With Either Tamoxifen or Exemestane Compared With Tamoxifen Alone in Treating Premenopausal Women With Hormone-Responsive Breast Cancer
RATIONALE: Estrogen can stimulate the growth of breast tumor cells. Ovarian function suppression combined with hormone therapy using tamoxifen or exemestane may fight breast cancer by reducing the production of estrogen.
- Conditions
- Estrogen Receptor Positive Breast Cancer, Progesterone Receptor Positive Tumor, Recurrent Breast Carcinoma, Stage IA Breast Cancer
- Trial name
- SOFT (NCT00066690)
- Testing
- Exemestane, Laboratory Biomarker Analysis, Oophorectomy
- Where
- 500 sites in United States, Canada and 1 more
- Volunteers
- 3,066 people
- Sponsor
- ETOP IBCSG Partners Foundation
Breast Cancer
Endocrine Response in Women With Invasive Lobular Breast Cancer
RATIONALE: Currently, adjuvant endocrine therapy often follows a "one-size-fits- all" approach, with most premenopausal women receiving tamoxifen, and most postmenopausal receiving aromatase inhibitor therapy.
- Trial name
- NCT02206984
- Testing
- Tamoxifen, Anastrozole, Fulvestrant
- Where
- 12 sites in United States
- Volunteers
- 201 people
- Sponsor
- Priscilla McAuliffe