Large-scale testing (Phase 3)Study completedNCT00232661What this trial is testingPROACT - Pre-Operative Arimidex Compared To TamoxifenWho this might be right forBreast Cancer AstraZeneca 452
Large-scale testing (Phase 3)UnknownNCT00412022What this trial is testingHOBOE: A Phase 3 Study of Adjuvant Triptorelin and Tamoxifen, Letrozole, or Letrozole and Zoledronic Acid in Premenopausal Patients With Breast Cancer.Who this might be right forBreast Cancer National Cancer Institute, Naples 1,294
Large-scale testing (Phase 3)Study completedNCT00002920What this trial is testingS9630, Medroxyprogesterone in Treating Women With Breast CancerWho this might be right forBreast CancerEndometrial Cancer SWOG Cancer Research Network 313
Large-scale testing (Phase 3)Study completedNCT00002580What this trial is testingTamoxifen, Ovarian Ablation, and/or Combination Chemotherapy in Treating Premenopausal Women With Stage I, Stage II, or Stage IIIA Invasive Breast CancerWho this might be right forBreast Cancer Scottish Cancer Therapy Network 1,000
Not applicableUnknownNCT01181518What this trial is testingTamoxifen Pharmacogenetics in Asian Breast Cancer WomenWho this might be right forPoisoning by, Adverse Effect of and Underdosing of Tamoxifen Inje University 1,000
Testing effectiveness (Phase 2)UnknownNCT05200663What this trial is testingEfficacy Comparison of Tamoxifen and Tamoxifen With Antioxidants on Semen Quality of Male With Idiopathic InfertilityWho this might be right forOligoasthenoteratozoospermiaMale Infertility Sharif Medical Research Center 110
Large-scale testing (Phase 3)UnknownNCT02062489What this trial is testingEvaluation of Tamoxifen's Efficacy for ER/PR Negative,ER-beta Positive Operable Breast Cancer PatientsWho this might be right forBreast Cancer Sun Yat-Sen Memorial Hospital of Sun Yat-Sen University 688
Testing effectiveness (Phase 2)Active Not RecruitingNCT03707340What this trial is testingFlibanserin in Breast Cancer Survivors on Tamoxifen or Aromatase InhibitorsWho this might be right forBreast CancerHyposexual Desire Disorder Memorial Sloan Kettering Cancer Center 43
Post-approval studies (Phase 4)UnknownNCT03060304What this trial is testingThe Effect of Tamoxifen on Clinical Outcome in Women With Thin Endometrium Undergoing Frozen Thawed Cycle.Who this might be right forEndometrium Sun Yat-sen University 100
Testing effectiveness (Phase 2)Study completedNCT01831076What this trial is testingPreoperative Hormone Therapy for Postmenopausal Women With ER+ Clinical Stage T2-4 TumorsWho this might be right forBreast CancerStage II Breast CancerStage III Breast Cancer University of Colorado, Denver 36
Testing effectiveness (Phase 2)Active Not RecruitingNCT02747004What this trial is testingAbemaciclib (LY2835219) Plus Tamoxifen or Abemaciclib Alone in Women With Metastatic Breast CancerWho this might be right forMetastatic Breast Cancer Eli Lilly and Company 234
Not applicableEnrolling By InvitationNCT04488614What this trial is testingProspective Breast Cancer BiobankingWho this might be right forBreast Cancer Helse Stavanger HF 1,200
Not applicableStudy completedNCT00886535What this trial is testingEffect of Pharmacogenomics Differences in Phase I and II Metabolism of Tamoxifen on Efficacy and ToxicityWho this might be right forBreast CancerDuctal Carcinoma in Situ Milton S. Hershey Medical Center 41
Not applicableStudy completedNCT00086749What this trial is testingEffect of Tamoxifen on Breast Density in Premenopausal Women With Breast Cancer or High Risk for Breast CancerWho this might be right forBreast Cancer Northwestern University 53
Large-scale testing (Phase 3)Study completedNCT00002864What this trial is testingTamoxifen With or Without Octreotide in Treating Postmenopausal Women With Stage I, Stage II, or Stage III Breast CancerWho this might be right forBreast Cancer NCIC Clinical Trials Group 667
Testing effectiveness (Phase 2)Active Not RecruitingNCT01196936What this trial is testingLow-Dose Tamoxifen Citrate in Reducing Breast Cancer Risk in Radiation-Induced Cancer SurvivorsWho this might be right forBreast Cancer University of Alabama at Birmingham 84
Not applicableLooking for participantsNCT05056857What this trial is testingNeutrophil Extracellular Traps Formation in Breast Cancer Patients Taking TamoxifenWho this might be right forBreast Carcinoma M.D. Anderson Cancer Center 290
Testing effectiveness (Phase 2)Study completedNCT02806544What this trial is testingNeoadjuvant Tamoxifen in Locally Advanced Breast Cancer in a Low/Middle Income CountryWho this might be right forBreast CancerBreast Neoplasms Vanderbilt University 35
Testing effectiveness (Phase 2)Study completedNCT00189358What this trial is testingA Phase II Study of ZD1839 and Tamoxifen in Patients With Epithelial Ovarian Carcinoma, Cancer of the Fallopian Tube or the Peritoneum Refractory to Platinum- and Taxane-based TherapyWho this might be right forOvarian CancerCancer of the Fallopian TubePeritoneal Cancer AGO Study Group
Large-scale testing (Phase 3)Study completedNCT00002646What this trial is testingHormone Therapy in Treating Postmenopausal Women With Receptor-Positive Breast CancerWho this might be right forBreast Cancer Eastern Cooperative Oncology Group 1,500