Letrozole: all 366 studies that test it

Page 4 of 4. Open to participants first (56), then studies with results posted, then the rest; newest registration first within each.

• Letrozole in Treating Breast Cancer in Postmenopausal Women With Stage I, II, or III Breast Cancer Previously Treated With Tamoxifen (GIM4)Active, not recruitingNCT01064635Phase 3
• Aromatase Inhibitor Effects on Ovarian Function During the Follicular and Early Luteal Phase in WomenCompletedNCT01046578Phase 4
• Chemotherapy or Letrozole Before Surgery in Treating Postmenopausal Women With Breast Cancer That Can Be Removed By SurgeryCompletedNCT00963729Phase 3
• A Study of PI3-Kinase Inhibitor GDC-0941 in Combination With Paclitaxel, With and Without Bevacizumab or Trastuzumab, and With Letrozole, in Participants With Locally Recurrent or Metastatic Breast CancerCompletedNCT00960960Phase 1
• Letrozole or Laparoscopic Ovarian Diathermy for Women With CC Resistant Polycystic Ovary Syndrome.CompletedNCT00956267Not applicable
• Letrozole or Tamoxifen Citrate in Treating Older Postmenopausal Women Undergoing Surgery for Breast CancerCompletedNCT00949598Phase 3
• Aromatase Inhibitors for Treatment of Uterine LeiomyomasWithdrawnNCT00945360Phase 1
• Letrozole or Combined Metformin Clomiphene Citrate (CC) for Women With CC Resistant Polycystic Ovary SyndromeCompletedNCT00911313Not applicable
• Trial of Endocrine Against Locoregional Therapy First in Postmenopausal Women With Early Breast CancerTerminatedNCT00908531Phase 3
• Letrozole Combined With Gonadotropins (Gn) for Ovarian Stimulation Undergoing in Vitro Fertilization/Intracytoplasmic Sperm Injection (IVF/ICSI) in Patients With Polycystic Ovary Syndrome (PCOS)Status unknownNCT00894608Not applicable
• Letrozole, Anastrozole, Exemestane, or Tamoxifen Citrate in Treating Postmenopausal Women With Breast CancerCompletedNCT00893061Phase 3
• The Effect of Oxytocin (OT) and Oxytocin Plus Human Chorionic Gonadotropin (hCG), in Cycles Induced by Letrozole or Clomiphene CitrateCompletedNCT00844350Phase 2
• Antagonist/Letrozole in Poor RespondersCompletedNCT00823004Phase 1/2
• Does Letrozole Improve the Outcomes and/or Reduce the Cost of IVF-ET Cycles?WithdrawnNCT00804960Phase 4
• Fulvestrant With or Without Lapatinib and/or Aromatase Inhibitor Therapy in Treating Postmenopausal Women With Metastatic Breast Cancer That Progressed After Previous Aromatase Inhibitor TherapyStatus unknownNCT00688194Phase 3
• Letrozole in Preventing Breast Cancer in Postmenopausal Women With a BRCA1 or BRCA2 MutationCompletedNCT00673335Phase 3
• Letrozole in Treating Postmenopausal Women With Stage I, II or III Breast Cancer That Can Be Removed by SurgeryTerminatedNCT00651976Early Phase 1
• Food Study of Letrozole Tablets 2.5 mg and Femara® Tablets 2.5 mgCompletedNCT00648154Phase 1
• Fasting Study of Letrozole Tablets 2.5 mg and Femara® Tablets 2.5 mgCompletedNCT00648063Phase 1
• Femara (Letrozole) Versus Placebo for Patients With Ovarian, Fallopian Tube, or Primary Peritoneal CancerWithdrawnNCT00634894Phase 2
• Letrozole vs. Clomiphene Citrate in Patients With Anovulatory InfertilityCompletedNCT00610077Phase 3
• Mid-luteal Phase Synchronization of Ovarian Folliculogenesis in WomenCompletedNCT00565240Not applicable
• Study of Anastrozole, Letrozole, or Exemestane With or Without Tamoxifen in Treating Postmenopausal Women With Hormone-Responsive Breast Cancer That Has Been Completely Removed By SurgeryStatus unknownNCT00541086Phase 3
• Optimal Duration of Pre-operative Treatment With Letrozole and to Correlate Clinical Efficacy With Appropriate Surrogate MarkersCompletedNCT00535418Phase 2/3
• Goserelin/Letrozole in Premenopausal Patients vs Letrozole Alone in Postmenopausal Patients With MBCCompletedNCT00532272Phase 2
• Dehydroepiandrosterone (DHEA) and Letrozole in Treating Patients With Metastatic Breast CancerTerminatedNCT00516542Phase 1
• Letrozole and Goserelin or Leuprolide in Treating Premenopausal Estrogen Receptor-Positive Patients With Stage IV Breast CancerTerminatedNCT00498901Phase 2
• Letrozole Versus Clomifene Citrate for Ovulation InductionCompletedNCT00478504Phase 4
• Genetic Testing or Clinical Assessment in Determining the Need for Chemotherapy in Women With Breast Cancer That Involves No More Than 3 Lymph NodesCompletedNCT00433589Phase 3
• HOBOE: A Phase 3 Study of Adjuvant Triptorelin and Tamoxifen, Letrozole, or Letrozole and Zoledronic Acid in Premenopausal Patients With Breast Cancer.Active, not recruitingNCT00412022Phase 3
• A Study of Letrozole in the Treatment of Endometrial CancerCompletedNCT00333086Phase 2
• Letrozole in Metastatic Breast Cancer in Combination With ChemotherapyCompletedNCT00333047Phase 2/3
• Letrozole as Early Adjuvant Treatment of Postmenopausal Patients With Primary Breast CancerCompletedNCT00332852Phase 3
• Safety and Efficacy of Hormone Therapy With Letrozole in Postmenopausal Women With Breast CancerCompletedNCT00330317Phase 3
• Safety and Rheumatologic Tolerability of Letrozole in Postmenopausal Patients With Hormone Receptor Positive Breast CancerCompletedNCT00329940Phase 3
• Bevacizumab and Letrozole in Treating Postmenopausal Women With Locally Advanced or Metastatic Breast Cancer That Cannot Be Removed By SurgeryCompletedNCT00305825Phase 2
• Letrozole in Postmenopausal Women at Increased Risk for Breast CancerStatus unknownNCT00280930Phase 2
• Treatment and Survival Continuation Study of Atamestane Plus Toremifene vs Letrozole in Advanced Breast CancerTerminatedNCT00267553Phase 3
• PTK and Letrozole in Post-menopausal Women With Advanced Breast CancerTerminatedNCT00263198Phase 2
• Extension Study of 1.0mg Dose Letrozole Therapy in Postmenopausal Patients With Breast CancerCompletedNCT00247663Phase 2
• Comparison Study of Letrozole Alone or Letrozole With Zoledronic Acid in Early Breast Cancer, Neoadjuvant TherapyCompletedNCT00247650Phase 2
• Letrozole in the Treatment of 1st and 2nd Line Hormone Receptor Positive Breast Cancer: Pre-therapeutic Risk AssessmentTerminatedNCT00241046Phase 4
• Letrozole in the Treatment of Severe and Recurrent EndometriosisCompletedNCT00240942Phase 2
• Letrozole in Preventing Breast Cancer in Postmenopausal Women Who Are at Increased Risk for Breast Cancer Due to High Breast DensityCompletedNCT00238316Phase 2
• Trastuzumab and Letrozole in Treating Postmenopausal Women With Progressive Advanced Breast CancerCompletedNCT00238290Phase 2
• Open Label Study of Postmenopausal Women With ER and /or PgR Positive Breast Cancer Treated With LetrozoleCompletedNCT00237224Phase 4
• Study of High-dose Letrozole Therapy in Postmenopausal Patients With Breast CancerCompletedNCT00237211Phase 2
• Study of Safety and Efficacy of Letrozole Monotherapy as Second-line Endocrine Therapy in Postmenopausal Patients With Advanced Breast Cancer Who Received Previous Anti-estrogen TreatmentCompletedNCT00237198Phase 2
• Treatment of Locally Advanced Breast Cancer With Letrozole in Postmenopausal WomenCompletedNCT00237133Phase 4
• FRAGRANCE Part A Safety: Study to Find a Genetic Signature of de Novo Resistance to LetrozoleCompletedNCT00199134Phase 2
• Study of the Efficacy and Safety of Letrozole Combined With Trastuzumab in Patients With Metastatic Breast CancerTerminatedNCT00171847Phase 4
• Letrozole in the Treatment of Advanced or Recurrent Hormone Receptor Positive Endometrial CancerCompletedNCT00171808Phase 2
• Open Label Trial for Post-Menopausal Women With Newly Diagnosed Operable Breast CancerCompletedNCT00161291Phase 2
• Short-term Effects of Aromatase Inhibition in Obese MenCompletedNCT00138710Phase 3
• Letrozole, Herceptin in Her2neu +, Estrogen Receptor [ER] and/or Progesterone Receptor [PR] Positive, MBCCompletedNCT00134680Phase 2
• Letrozole With or Without Zoledronate in Treating Healthy Postmenopausal Women With High Breast DensityCompletedNCT00114270Not applicable
• Zoledronate in Preventing Bone Loss in Postmenopausal Women Who Are Receiving Letrozole for Stage I, Stage II, or Stage IIIA Breast CancerCompletedNCT00107263Phase 3
• Everolimus and Letrozole as Preoperative Therapy of Primary Breast Cancer in Post-menopausal WomenCompletedNCT00107016Phase 2
• Letrozole and Celecoxib in Treating Postmenopausal Women With Locally Advanced or Metastatic Breast CancerTerminatedNCT00101062Phase 2
• The CAT Study: Atamestane Plus Toremifene Versus Letrozole in Advanced Breast CancerTerminatedNCT00097344Phase 3
• Neoadjuvant Letrozole in Treating Postmenopausal Women With Estrogen-Receptor Positive and/or Progesterone-Receptor Positive Stage II, Stage IIIA, or Stage IIIB Breast CancerCompletedNCT00084396Phase 2
• Letrozole in Treating Postmenopausal Women With Metastatic Breast CancerCompletedNCT00014638Phase 4
• Effects of Letrozole on Precocious Puberty Due to McCune Albright SyndromeCompletedNCT00006174Phase 1
• Letrozole in Treating Women With Recurrent or Metastatic Endometrial CancerCompletedNCT00004251Phase 2
• Letrozole or Tamoxifen in Treating Postmenopausal Women With Breast CancerCompletedNCT00004205Phase 3
• Letrozole After Tamoxifen in Treating Women With Breast CancerCompletedNCT00003140Phase 3

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