Drug or intervention
Letrozole Clinical Trials
Studies that test Letrozole, 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 182Breast Cancer
A Study to Test Inavolisib Treatments in Participants With Early-Stage, PIK3CA-Mutated Breast Cancer
This study will evaluate the safety and efficacy of inavolisib combination therapies in participants with untreated, PIK3CA-mutated, Stage II-III, estrogen receptor (ER)-positive, Human Epidermal Growth Factor Receptor 2…
- Trial name
- NCT07054190
- Testing
- Inavolisib, Ribociclib, Letrozole
- Where
- 37 sites in United States, Argentina and 5 more
- Volunteers
- 120 people
- Sponsor
- Hoffmann-La Roche
Anatomic Stage II Breast Cancer AJCC v8, Anatomic Stage IIIA Breast Cancer AJCC v8
Testing Whether Hormone Therapy With Ribociclib is as Effective as Chemotherapy Followed by Hormone Therapy With Ribociclib for the Treatment of High Anatomic Stage Breast Cancer With Low Recurrence Risk, The RxFINE-Low Trial
This phase III trial compares standard of care hormone therapy plus ribociclib to chemotherapy followed by hormone therapy plus ribociclib for the treatment of patients with high anatomic stage breast cancer with low risk of the…
- Conditions
- Anatomic Stage II Breast Cancer AJCC v8, Anatomic Stage IIIA Breast Cancer AJCC v8, Anatomic Stage IIIC Breast Cancer AJCC v8, Estrogen Receptor-Positive Breast Carcinoma
- Trial name
- NCT07391774
- Testing
- Anastrozole, Biospecimen Collection, Bone Scan
- Where
- 226 sites in United States, Puerto Rico
- Volunteers
- 1,978 people
- Sponsor
- National Cancer Institute (NCI)
Breast Cancer
A Phase III Clinical Study of HRS-6209 Plus Letrozole as First-line Therapy in Patients With Advanced or Metastatic Breast Cancer
The purpose of this study is to investigate the efficacy and safety of HRS-6209 in combination with letrozole compared with dalpciclib or palbociclib in combination with aromatase inhibitor in patients with advanced or metastatic…
- Trial name
- NCT07894328
- Testing
- HRS-6209 + Letrozole, Dalpciclib/Palbociclib + Letrozole/Anastrozole
- Where
- China
- Volunteers
- 1,050 people
- Sponsor
- Jiangsu HengRui Medicine Co., Ltd.
HR+/HER2- Breast Cancer
BGB-43395 Plus Letrozole Versus CDK4/6i Plus Letrozole for Patients With Advanced or Metastatic HR+/HER2- Breast Cancer Who Have Not Received Prior Treatment for Advanced or Metastatic Disease
The purpose of this study is to investigate the efficacy and safety of BGB-43395 in combination with letrozole compared with investigator's choice of cyclin-dependent kinase 4/6 inhibitor (CDK4/6i) in combination with letrozole…
- Trial name
- KANDELA-302 (NCT07492641)
- Testing
- BGB-43395, Letrozole, Abemaciclib
- Where
- 241 sites in United States, Australia and 14 more
- Volunteers
- 1,056 people
- Sponsor
- BeOne Medicines
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.
Low-Grade Serous Ovarian Cancer
A Study of Avutometinib, Defactinib, and Letrozole in People With Low-Grade Serous Ovarian Cancer
The researchers are doing this study to find out whether the combination of avutometinib, defactinib, and letrozole is an effective treatment for people with low-grade serous ovarian cancer (LGSOC).
- Trial name
- CHAMELEON (NCT06394804)
- Testing
- Avutometinib, Defactinib, Letrozole
- Where
- 8 sites in United States
- Volunteers
- 20 people
- Sponsor
- Memorial Sloan Kettering Cancer Center
Advanced Unresectable or Metastatic Breast Cancer, Advanced Solid Tumors
A Trial of HRS-6209 in Combination With Other Antitumor Therapies in Breast Cancer Patients or HRS-9813 as Monotherapy in Patients With Advanced Solid Tumors
The study is being conducted to evaluate the safety, PK and efficacy of HRS-6209 in Combination with Fulvestrant, Letrozole, HRS-8080, HRS-1358 ,or HRS-9813 and HRS-8080，or letrozole and trastuzumab, with or without pertuzumab…
- Trial name
- NCT06555068
- Testing
- HRS-6209 in Combination with Fulvestrant, HRS-6209 in Combination with HRS-1358, HRS-6209 in Combination with Letrozole
- Where
- China
- Volunteers
- 528 people
- Sponsor
- Jiangsu HengRui Medicine Co., Ltd.
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
Locally Advanced or Metastatic ER+ HER2- Breast Cancer, Locally Advanced or Metastatic Castration-resistant Prostate Cancer
Study of PF-07248144 in Advanced or Metastatic Solid Tumors
This is an open-label, multi center study to evaluate safety, tolerability, pharmacokinetics (PK), and pharmacodynamics (PD) of PF-07248144 and early signs of clinical efficacy of PF-07248144 as a single agent and in combination…
- Conditions
- Locally Advanced or Metastatic ER+ HER2- Breast Cancer, Locally Advanced or Metastatic Castration-resistant Prostate Cancer, Locally Advanced or Metastatic Non-small Cell Lung Cancer
- Trial name
- KAT6 (NCT04606446)
- Testing
- PF-07248144, Fulvestrant, Letrozole
- Where
- 43 sites in United States, Australia and 3 more
- Volunteers
- 320 people
- Sponsor
- Pfizer
Completed, with results posted
All 135Breast Cancer
Letrozole in Preventing Cancer in Postmenopausal Women Who Have Received 4-6 Years of Hormone Therapy for Hormone Receptor-Positive, Lymph Node-Positive, Early-Stage Breast Cancer
RATIONALE: Estrogen can cause the growth of breast cancer cells. Letrozole may fight breast cancer by lowering the amount of estrogen the body makes.
- Trial name
- SOLE (NCT00553410)
- Testing
- Letrozole
- Where
- 164 sites in United States, Australia and 18 more
- Volunteers
- 4,884 people
- Sponsor
- ETOP IBCSG Partners Foundation
Breast Cancer, Estrogen Receptor Positive Tumor
To Reduce the Use of Chemotherapy in Postmenopausal Patients With ER-positive and HER2-positive Breast Cancer (TOUCH)
This is a phase II open-label, multicentre, randomized trial. The study assesses the treatment of postmenopausal patients with hormone receptor positive/HER2 positive early breast cancer with neoadjuvant palbociclib in…
- Conditions
- Breast Cancer, Estrogen Receptor Positive Tumor, HER2-positive Breast Cancer
- Trial name
- TOUCH (NCT03644186)
- Testing
- Paclitaxel, Trastuzumab, Pertuzumab
- Where
- 54 sites in Belgium, France and 2 more
- Volunteers
- 147 people
- Sponsor
- ETOP IBCSG Partners Foundation
Advanced Breast Carcinoma, HER2-Positive Breast Carcinoma
TVB-2640 and Trastuzumab With Paclitaxel or Endocrine Therapy for Treatment of HER2 Positive Metastatic Breast Cancer
This phase II trial studies how well FASN inhibitor TVB-2640, paclitaxel, and trastuzumab work in treating patients with HER2 positive breast cancer that has spread to other places in the body (metastatic).
- Conditions
- Advanced Breast Carcinoma, HER2-Positive Breast Carcinoma, Anatomic Stage III Breast Cancer AJCC v8, Anatomic Stage IV Breast Cancer AJCC v8
- Trial name
- NCT03179904
- Testing
- Anastrozole, Denifanstat, Exemestane
- Where
- 3 sites in United States
- Volunteers
- 17 people
- Sponsor
- Mayo Clinic
Estrogen Receptor-positive Breast Cancer, HER2/Neu Negative
Testing the Effects of Palbociclib and Fulvestrant or Letrozole for Patients 70 Years of Age of Older With Metastatic Breast Cancer
This phase II trial studies the side effects and how well palbociclib and letrozole or fulvestrant works in treating patients aged 70 years and older with estrogen receptor positive, HER2 negative breast cancer that has spread to…
- Conditions
- Estrogen Receptor-positive Breast Cancer, HER2/Neu Negative, Stage IV Breast Cancer AJCC v6 and v7
- Trial name
- NCT03633331
- Testing
- Palbociclib, Letrozole, Fulvestrant
- Where
- 447 sites in United States
- Volunteers
- 93 people
- Sponsor
- Alliance for Clinical Trials in Oncology
Breast Cancer
Study of Changes in Estrogen Levels and Grip Strength in Postmenopausal Women Who Have Received 4 to 6 Years of Hormone Therapy for Breast Cancer and Are Currently Receiving Letrozole on Clinical Trial IBCSG-35-07
RATIONALE: Studying samples of blood in the laboratory from patients receiving treatment for cancer may help doctors learn more about changes that may occur in DNA and identify biomarkers related to cancer.
- Trial name
- SOLE-EST (NCT01281137)
- Testing
- polymorphism analysis, laboratory biomarker analysis, quality-of-life assessment
- Where
- 2 sites in Australia, Belgium
- Volunteers
- 104 people
- Sponsor
- ETOP IBCSG Partners Foundation