Drugs / Tamoxifen
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Tamoxifen

Small molecule targets ESR1

Developed for
breast cancer · female breast carcinoma · estrogen-receptor positive breast cancer · hormone receptor-positive breast cancer · Her2-receptor negative breast cancer · breast neoplasm · ductal breast carcinoma in situ · invasive breast carcinoma
+104 more · lobular breast carcinoma in situ · progesterone-receptor positive breast cancer · central nervous system neoplasm · ovarian carcinoma · amyotrophic lateral sclerosis · atypical lobular breast hyperplasia · breast carcinoma · cancer · fallopian tube cancer · infertility disorder · peritoneum cancer · prostate cancer · sarcoma · Duchenne muscular dystrophy · glioblastoma · HIV infectious disease · liver cancer · lung disorder · male breast carcinoma · menstrual disorder · metastatic neoplasm · ovarian cancer · prostate carcinoma · urinary bladder cancer · adrenal cortex carcinoma · ATM-related cancer predisposition · atypical teratoid rhabdoid tumor · Barrett esophagus · benign mammary dysplasia · bipolar disorder · brain neoplasm · breast carcinoma in situ · breast fibroadenoma · breast fibrocystic disease · breast lobular carcinoma · central nervous system cancer · cervical squamous cell carcinoma · CHEK2-related cancer predisposition · childhood medulloblastoma · chronic hepatitis C virus infection · coronary artery disorder · cutaneous melanoma · cystic fibrosis · desmoid tumor · diffuse large B-cell lymphoma · digestive system neoplasm · embryonal tumor with multilayered rosettes · endometrial cancer · endometrial carcinoma · endometrial disorder · ependymoblastoma · exocrine pancreatic carcinoma · fallopian tube carcinoma · female infertility · glioma · head and neck cancer · hemometra · hemorrhagic disease · hereditary hemorrhagic telangiectasia · heritable pulmonary arterial hypertension · hyperplasia · hypertensive disorder · hypogonadism · malignant epithelial tumor of ovary · malignant mesothelioma · malignant pancreatic neoplasm · Mammastatin · medulloblastoma non-WNT/non-SHH group 3 · medulloblastoma non-WNT/non-SHH group 4 · medulloepithelioma · metastatic carcinoma in the bone · metastatic malignant neoplasm · myocardial ischemia · neuroblastoma · neuroendocrine neoplasm · ocular melanoma · oligoasthenoteratozoospermia · osteosarcoma · pancreatic mucinous-cystic neoplasm · peritoneal carcinoma · pheochromocytoma · pineoblastoma · polycystic ovary syndrome · refractory malignant neoplasm · skin atrophy · triple-negative breast carcinoma · urinary bladder neoplasm · urothelial carcinoma · uterine corpus cancer · X-linked myotubular myopathy · basal-like breast carcinoma · CDH1-related diffuse gastric and lobular breast cancer syndrome · COVID-19 · gynecomastia disorder · luminal B breast carcinoma · manic bipolar affective disorder · meningitis · ovarian serous adenocarcinoma · PALB2-related cancer predisposition · primary peritoneal serous adenocarcinoma · RAD51C-related cancer predisposition · RAD51D-related cancer predisposition · schizoaffective disorder · uterine disorder
Investigated by
National Cancer Institute (NCI) · AstraZeneca · Pfizer · Merck Sharp & Dohme LLC · Dana-Farber Cancer Institute · ETOP IBCSG Partners Foundation
+252 more · Eli Lilly and Company · Sun Yat-sen University · University of California, San Francisco · Cancer and Leukemia Group B · Fudan University · NCIC Clinical Trials Group · Novartis · Oregon Health and Science University · European Organisation for Research and Treatment of Cancer - EORTC · Institut Cancerologie de l'Ouest · Institut Claudius Regaud · Mayo Clinic · Novartis Pharmaceuticals · San Diego Pacific Oncology & Hematology Associates · Scottish Cancer Therapy Network · Washington University School of Medicine · Alliance for Clinical Trials in Oncology · Andrea DeCensi · Breast Cancer Research Foundation · Breast International Group · Danish Breast Cancer Cooperative Group · Emory University · GBG Forschungs GmbH · Gynecologic Oncology Group · H. Lee Moffitt Cancer Center and Research Institute · International Collaborative Cancer Group · Karolinska Institutet · Korean Breast Cancer Study Group · Medical College of Wisconsin · NRG Oncology · NSABP Foundation Inc · Nalagenetics Pte Ltd · National Medical Research Council (NMRC), Singapore · North Central Cancer Treatment Group · Ottawa Hospital Research Institute · Radiation Therapy Oncology Group · SOLTI Breast Cancer Research Group · SWOG Cancer Research Network · TYK Medicines, Inc · UNICANCER · University Health Network, Toronto · University of Colorado, Denver · University of Nebraska · University of Rochester · University of Washington · University of Wisconsin, Madison · Wake Forest University · AC Camargo Cancer Center · AEterna Zentaris · AGO Study Group · AHS Cancer Control Alberta · ALS Therapy Alliance · AMS Advanced Medical Services GmbH · ARC Foundation for Cancer Research · ARCAGY/ GINECO GROUP · Agendia · Ain Shams University · Al-Thawra Modern General Hospital · Amgen · Anthony Joshua, FRACP · Asan Medical Center · Associazione Italiana per la Ricerca sul Cancro · Austrian Breast & Colorectal Cancer Study Group · Avon Foundation · Azienda Ospedaliera Universitaria Integrata Verona · Bader, Ted, M.D. · Baylor Breast Care Center · Baylor College of Medicine · Big Ten Cancer Research Consortium · Breast Cancer Trials, Australia and New Zealand · Brigham and Women's Hospital · British Association of Surgical Oncology: Breast Group · British Columbia Cancer Agency · Buddhist Tzu Chi General Hospital · all 258 on the full record

Regulatory milestones approvals, filings & regulatory actions · 11 recorded

MilestoneJurisdictionBrandIndicationDateSentence it was read from
Label expansion US (FDA) SOLTAMOX 2018-09-25 fda.gov
Label expansions (9) US (FDA) NOLVADEX 1986-12-03 – 2009-03-13 fda.gov
Approved US (FDA) NOLVADEX 1977-12-30 fda.gov

Trials 223 · started per year

today
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PhaseRegistry idDatesIndicationSponsorStatusOutcome
Phase 03 trials
Phase 0 NCT06942039 Sep 2025 → Dec 2030 expected atypical teratoid rhabdoid tumor, childhood medulloblastoma, embryonal tumor with multilayered rosettes, ependymoblastoma +5 C17 Council Recruiting No outcome recorded
Phase 0 NCT04174352 Oct 2020 → Dec 2026 expected estrogen-receptor positive breast cancer University of Wisconsin, Madison Recruiting No outcome recorded
Phase 0 NCT02089386 Jul 2014 → Jun 2016 Barrett esophagus Washington University School of Medicine Terminated No outcome recorded
Phase 117 trials
Phase 1 NCT06320990 Jan 2025 → Nov 2028 expected pancreatic mucinous-cystic neoplasm University of Nebraska Recruiting No outcome recorded
Phase 1 NCT05156892 Sep 2022 → Jan 2026 overdue ovarian carcinoma Anthony Joshua, FRACP Active not recruiting No outcome recorded
Phase 1 NCT04200066 Jun 2022 → Oct 2023 brain neoplasm, glioblastoma University of Rochester Withdrawn No outcome recorded
Phase 1 NCT04961632 Dec 2020 → Nov 2025 breast cancer National Cancer Centre, Singapore Unknown No outcome recorded
Phase 1 NCT04433494 Dec 2020 → May 2023 breast cancer TYK Medicines, Inc Unknown No outcome recorded
Phase 1 NCT03554044 Feb 2020 → Dec 2023 Her2-receptor negative breast cancer, estrogen-receptor positive breast cancer, female breast carcinoma, invasive breast carcinoma University of California, San Francisco Completed No outcome recorded
Phase 1 NCT02835079 Nov 2016 → Nov 2020 Duchenne muscular dystrophy Hadassah Medical Organization Completed No outcome recorded
Phase 1 NCT02513849 Dec 2015 → Aug 2018 cancer, digestive system neoplasm University of Nottingham Unknown No outcome recorded
Phase 1 NCT02333370 Feb 2015 → Sep 2022 hormone receptor-positive breast cancer Novartis Pharmaceuticals Completed No outcome recorded
Phase 1 NCT02093351 Sep 2014 → Apr 2015 cancer AstraZeneca Completed No outcome recorded
Phase 1/28 trials
Phase 1/2 NCT07104617 Aug 2025 → Oct 2026 expected prostate carcinoma TYK Medicines, Inc Not yet recruiting No outcome recorded
Phase 1/2 NCT05378269 Nov 2021 → Dec 2022 skin atrophy Daré Bioscience, Inc. Completed No outcome recorded
Phase 1/2 NCT04915846 Dec 2020 → May 2024 X-linked myotubular myopathy James Dowling Terminated No outcome recorded
Phase 1/2 NCT03280563 Dec 2017 → Sep 2024 breast neoplasm Hoffmann-La Roche Completed No outcome recorded
Phase 1/2 NCT04079517 Mar 2015 → Feb 2016 breast cancer Karolinska Institutet Completed No outcome recorded
Phase 1/2 NCT02166944 Apr 2014 → Sep 2019 amyotrophic lateral sclerosis Taipei Medical University Shuang Ho Hospital Completed No outcome recorded
Phase 1/2 NCT01194908 Jul 2010 → Jan 2014 breast cancer Emory University Terminated No outcome recorded
Phase 1/2 NCT00290745 Feb 2002 → Jul 2009 breast cancer University of California, San Francisco Completed No outcome recorded
Phase 2107 trials
Phase 2 NCT07499999 Sep 2026 → Aug 2027 expected ATM-related cancer predisposition, BRCA2-related cancer predisposition, CHEK2-related cancer predisposition, atypical lobular breast hyperplasia +1 Dana-Farber Cancer Institute Not yet recruiting No outcome recorded
Phase 2 NCT07535905 Jul 2026 → Oct 2030 expected hypogonadism, prostate cancer University Health Network, Toronto Not yet recruiting No outcome recorded
Phase 2 NCT07483307 Mar 2026 → Mar 2030 expected Her2-receptor negative breast cancer, breast lobular carcinoma, estrogen-receptor positive breast cancer Memorial Sloan Kettering Cancer Center Recruiting No outcome recorded
Phase 2 NCT06434064 Mar 2026 → Nov 2028 expected triple-negative breast carcinoma Roswell Park Cancer Institute Recruiting No outcome recorded
Phase 2 NCT07289035 Jan → Apr 2026 overdue cystic fibrosis Azienda Ospedaliera Universitaria Integrata Verona Not yet recruiting No outcome recorded
Phase 2 NCT06364267 Oct 2025 → Jan 2027 expected breast cancer Andrea DeCensi Recruiting No outcome recorded
Phase 2 NCT06979596 Aug 2025 → Nov 2027 expected cancer Merck Sharp & Dohme LLC Recruiting No outcome recorded
Phase 2 NCT06195306 Jul 2025 → Jan 2027 expected ductal breast carcinoma in situ, lobular breast carcinoma in situ National Cancer Institute (NCI) Recruiting No outcome recorded
Phase 2 NCT06630325 Jun 2025 → Mar 2026 exocrine pancreatic carcinoma, female breast carcinoma, ovarian carcinoma, prostate carcinoma +1 OHSU Knight Cancer Institute Terminated No outcome recorded
Phase 2 NCT06914674 Mar 2025 → Feb 2027 expected malignant pancreatic neoplasm Fudan University Recruiting No outcome recorded
Phase 2/34 trials
Phase 2/3 NCT06355401 Apr 2024 → Mar 2026 overdue diffuse large B-cell lymphoma Sohag University Not yet recruiting No outcome recorded
Phase 2/3 NCT02801786 Nov 2018 → Nov 2020 Federal University of Goiás Unknown No outcome recorded
Phase 2/3 NCT03373708 Dec 2017 → Dec 2019 breast cancer Zhiyong Yu Unknown No outcome recorded
Phase 2/3 NCT02132000 Apr 2014 → May 2020 hormone receptor-positive breast cancer Fengxi Su Unknown No outcome recorded
Phase 358 trials
Phase 3 NCT07502820 Mar 2026 → Aug 2036 expected female breast carcinoma Karolinska Institutet Not yet recruiting No outcome recorded
Phase 3 NCT07671885 Jan 2026 → Jan 2038 expected breast cancer Tokyo Women's Medical University Recruiting No outcome recorded
Phase 3 NCT07153757 Sep 2025 → Sep 2033 expected female breast carcinoma Fudan University Not yet recruiting No outcome recorded
Phase 3 NCT06223698 May 2025 → May 2032 expected breast cancer Region Örebro County Not yet recruiting No outcome recorded
Phase 3 NCT06671912 Feb 2025 → Nov 2030 Her2-receptor negative breast cancer, ductal breast carcinoma in situ, estrogen-receptor positive breast cancer, lobular breast carcinoma in situ Alliance for Clinical Trials in Oncology Suspended No outcome recorded
Phase 3 NCT06492616 Sep 2024 → Aug 2029 expected breast cancer Stemline Therapeutics, Inc. Recruiting No outcome recorded
Phase 3 NCT06507618 Jul 2024 → Jun 2029 expected female breast carcinoma University of Virginia Recruiting No outcome recorded
Phase 3 NCT07616973 May 2023 → May 2026 overdue female infertility Sana'a University Active not recruiting No outcome recorded
Phase 3 NCT05016349 Aug → Oct 2021 female breast carcinoma Mahmoud Ramadan mohamed Elkazzaz Unknown No outcome recorded
Phase 3 NCT04046159 Apr 2019 → Dec 2025 ductal breast carcinoma in situ National Taiwan University Hospital Unknown No outcome recorded
Phase 415 trials
Phase 4 NCT05333328 Feb 2023 → Jan 2031 expected Her2-receptor negative breast cancer, estrogen-receptor positive breast cancer Gangnam Severance Hospital Recruiting No outcome recorded
Phase 4 NCT05525481 Nov 2022 → Dec 2023 estrogen-receptor positive breast cancer Erasmus Medical Center Unknown No outcome recorded
Phase 4 NCT03948568 Sep 2019 → Jun 2021 female breast carcinoma Ottawa Hospital Research Institute Completed No outcome recorded
Phase 4 NCT03238703 Sep 2018 → Mar 2023 Her2-receptor negative breast cancer, breast carcinoma in situ, female breast carcinoma, invasive breast carcinoma Fred Hutchinson Cancer Center Withdrawn No outcome recorded
Phase 4 NCT03355157 Mar 2018 → Aug 2024 breast cancer GBG Forschungs GmbH Completed No outcome recorded
Phase 4 NCT03060304 Mar 2017 → Dec 2019 endometrial disorder Sun Yat-sen University Unknown No outcome recorded
Phase 4 NCT02903121 Jan 2017 → Jun 2019 hemorrhagic disease Oregon Health and Science University Completed No outcome recorded
Phase 4 NCT02690870 Jan 2017 → May 2018 infertility disorder Sun Yat-Sen Memorial Hospital of Sun Yat-Sen University Unknown No outcome recorded
Phase 4 NCT02824224 Sep 2016 → Jan 2018 hemometra, menstrual disorder Oregon Health and Science University Completed No outcome recorded
Phase 4 NCT02479256 Jun 2015 → May 2016 polycystic ovary syndrome Ain Shams University Completed No outcome recorded
Phase not applicable11 trials
NCT05501158 Jan 2021 → Apr 2024 breast cancer Nalagenetics Pte Ltd Unknown No outcome recorded
NCT04312347 Sep 2019 → May 2021 estrogen-receptor positive breast cancer Nalagenetics Pte Ltd Completed No outcome recorded
NCT02979301 Mar 2017 → Feb 2018 Mayo Clinic Completed No outcome recorded
NCT01293032 Apr 2011 → May 2015 ductal breast carcinoma in situ, female breast carcinoma, lobular breast carcinoma in situ Virginia Commonwealth University Completed No outcome recorded
NCT01075802 Mar 2010 → Oct 2012 Amobarbital, deficient N-hydroxylation of, breast cancer Western Sydney Local Health District Completed No outcome recorded
NCT00847366 May 2008 → Dec 2012 breast cancer, non-small cell lung carcinoma, sarcoma AEterna Zentaris Completed No outcome recorded
NCT00538330 Sep 2007 → Sep 2020 breast cancer King Faisal Specialist Hospital & Research Center Unknown No outcome recorded
NCT00449514 May 2007 → ? infertility disorder Shaare Zedek Medical Center Unknown No outcome recorded
NCT01016665 Apr 2005 → Jul 2007 breast cancer Federal University of São Paulo Completed No outcome recorded
NCT00126464 Nov 2004 → ? breast cancer Cedars-Sinai Medical Center Unknown No outcome recorded
Also used as a comparator or background therapy in 192 trials
PhaseRegistry idDatesIndicationSponsorStatusOutcome
Phase 01 trial
Phase 0 NCT02913430 Comparator Apr 2018 → Apr 2022 breast cancer Shannon Puhalla Completed No outcome recorded
Phase 110 trials
Phase 1 NCT06218303 Background Feb 2024 → Aug 2026 overdue ductal breast carcinoma in situ Finn, Olivera, PhD Recruiting No outcome recorded
Phase 1 NCT05755581 Comparator Apr 2023 → Apr 2025 breast cancer Sohag University Unknown No outcome recorded
Phase 1 NCT04504331 Background Oct 2020 → Oct 2021 Her2-receptor negative breast cancer, estrogen-receptor positive breast cancer, progesterone-receptor positive breast cancer Jennifer Lee Caswell-Jin Terminated No outcome recorded
Phase 1 NCT02936206 Comparator Oct 2016 → May 2020 breast cancer Icahn School of Medicine at Mount Sinai Terminated No outcome recorded
Phase 1 NCT02586675 Background Feb 2016 → May 2017 female breast carcinoma, male breast carcinoma H. Lee Moffitt Cancer Center and Research Institute Completed No outcome recorded
Phase 1/23 trials
Phase 1/2 NCT07708194 Background Jun 2025 → Feb 2027 expected HER2 positive breast carcinoma, hormone receptor-positive breast cancer Tianjin Medical University Cancer Institute and Hospital Recruiting No outcome recorded
Phase 1/2 NCT05768139 Background Apr 2023 → Jul 2030 expected breast cancer Eli Lilly and Company Recruiting No outcome recorded
Phase 1/2 NCT02285179 Background Nov 2014 → May 2022 breast cancer The Netherlands Cancer Institute Completed No outcome recorded
Phase 270 trials
Phase 2 NCT07610733 Background Jun 2026 → Sep 2027 expected breast cancer Fudan University Not yet recruiting No outcome recorded
Phase 2 NCT07287098 Comparator May 2026 → Jan 2029 expected breast neoplasm Eli Lilly and Company Recruiting No outcome recorded
Phase 2 NCT07581834 Background Jan 2026 → Dec 2031 expected hormone receptor-positive breast cancer Fujian Cancer Hospital Recruiting No outcome recorded
Phase 2 NCT07071038 Comparator Oct 2025 → Aug 2026 overdue breast cancer Dartmouth-Hitchcock Medical Center Recruiting No outcome recorded
Phase 2 NCT07101159 Background Sep 2025 → Dec 2031 expected hormone receptor-positive breast cancer Fujian Cancer Hospital Not yet recruiting No outcome recorded
Phase 2/32 trials
Phase 2/3 NCT02101788 Comparator Apr 2014 → Apr 2019 borderline ovarian serous tumor, micropapillary serous carcinoma, ovarian serous adenocarcinoma, primary peritoneal serous adenocarcinoma National Cancer Institute (NCI) Completed No outcome recorded
Phase 2/3 NCT00684216 Comparator Apr 2008 → May 2012 breast cancer The Netherlands Cancer Institute Terminated No outcome recorded
Phase 390 trials
Phase 3 NCT07349069 Comparator Mar 2026 → Dec 2030 expected breast cancer Shandong Suncadia Medicine Co., Ltd. Recruiting No outcome recorded
Phase 3 NCT06585969 Comparator Jan 2026 basal-like breast carcinoma, estrogen-receptor positive breast cancer, luminal B breast carcinoma Danish Breast Cancer Cooperative Group Withdrawn No outcome recorded
Phase 3 NCT07213206 Comparator Oct 2025 → Sep 2032 expected breast cancer Fudan University Not yet recruiting No outcome recorded
Phase 3 NCT07019363 Comparator Jun 2025 → May 2029 expected breast cancer Fudan University Recruiting No outcome recorded
Phase 3 NCT07190443 Comparator Feb 2025 → Feb 2034 expected breast cancer Japanese Foundation for Cancer Research Recruiting No outcome recorded
Phase 46 trials
Phase 4 NCT05161195 Background Jul 2022 → Jun 2030 expected metastatic malignant neoplasm Novartis Pharmaceuticals Active not recruiting No outcome recorded
Phase 4 NCT04933240 Comparator May 2022 → Jun 2024 Virginia Commonwealth University Withdrawn No outcome recorded
Phase 4 NCT02344940 Comparator Dec 2014 → Aug 2018 breast cancer Shanghai Jiao Tong University School of Medicine Completed No outcome recorded
Phase 4 NCT02467686 Comparator Jan 2014 → Sep 2017 Irmandade da Santa Casa de Misericordia de Sao Paulo Unknown No outcome recorded
Phase 4 NCT01612871 Background Jun 2012 → Jan 2016 female breast carcinoma Institut Claudius Regaud Completed No outcome recorded
Phase not applicable10 trials
NCT07447024 Background Mar → Jun 2026 overdue Cairo University Not yet recruiting No outcome recorded
NCT07145827 Background Jan 2024 → Jul 2025 breast cancer, endometrial disorder Uruk University Completed No outcome recorded
NCT05890287 Background May 2023 → May 2026 overdue hormone receptor-positive breast cancer Tianjin Medical University Cancer Institute and Hospital Recruiting No outcome recorded
NCT06120595 Background Nov 2022 → Nov 2023 Helse Stavanger HF Unknown No outcome recorded
NCT04292886 Comparator Oct 2019 → Dec 2020 uterine disorder Nanjing University Unknown No outcome recorded

Press releases naming this drug 2 releases

DateIssuerRelease
2003-02-21 Teva Branded Pharmaceutical Products R&D, Inc. Teva Announces Final Approval of Tamoxifen Citrate Tablets tevapharm.com
2000-06-01 Teva Branded Pharmaceutical Products R&D, Inc. Teva Pharmaceutical Industries Ltd Receives Final FDA Approval of Tamoxifen Citrate 10 mg tevapharm.com

Evidence & citations 49 cited values

Every value below carries the sentence it was read from. 419 sources stand behind the page.

FieldValueCited text
Known as Tamoxifen “Options include tamoxifen (20 mg daily), aromatase inhibitors (letrozole 2.5 mg daily, anastrozole 1 mg daily, or exemestane 25 mg daily), or fulvestrant (500 mg...” NCT07708194
398

“Endocrine therapy is determined by the doctor, including any kind of letrozole, anastrozole, exemestane, fulvestrant, tamoxifen, toremifene, combined with or without drugs or...” NCT03204734

“Pre- and peri-menopausal women will be receiving Ovarian Function Suppression (OFS) by either leuprorelin subcutaneous 3.75 mg q28days or goserelin subcutaneous 3.6 mg q28days...” NCT03969121

“Endocrine therapy (physician's choice based on prior administered agent including tamoxifen, exemestane, fulvestrant, anastrozole, or letrozole). Endocrine therapy must be...” NCT03184090

Tamoxifen 20 mg daily, or letrozole 2.5 mg daily, or anastrozole 1 mg daily, or exemestane 25 mg daily (male patients will be treated with tamoxifen 20 mg daily) for a total...” NCT03081234

“Participants will receive standard of care mTOR inhibitor therapy (Everolimus) in combination with selective estrogen receptor modulator therapy (Tamoxifen) in Step 2 Arm 2 and Step 3.” NCT05826964

“Letrozole 2.5 mg by mouth daily, or anastrozole 1 mg by mouth daily, exemestane 25 mg by mouth daily, tamoxifen 20 mg by mouth daily, for a total duration of at least 60 months.” NCT03078751

“The physician's choice of endocrine therapy (PCET) is limited to tamoxifen or one of the specified third generation aromatase inhibitors: letrozole, anastrozole, or exemestane.” NCT04961996

“Endocrine therapy: letrozole (2.5mg daily), anastrozole (1mg daily), exemestane (25mg daily), tamoxifen (20mg daily) or fulvestrant (intramuscular 500mg every 4 weeks)” NCT06585969

“1-month GnRH (goserelin 3.6 mg depot or goserelin 3.6 mg implant or leuprolide 3.75 mg depot) +endocrine therapy (aromatase inhibitor/tamoxifen±CDK4/6 inhibition)” NCT07610733

“aromatase inhibitor (letrozole 2.5mg/d PO, anastrazole 1mg/d PO, or exemestane 25mg/d PO)or Selective Estrogen Receptor Modulator (SERM) (tamoxifen 20mg/d PO)” NCT00240071

“Endocrine therapy with tamoxifen will be evaluated in combination with perifosine to determine if the combination overcomes resistance to endocrine therapy .” NCT00847366

“If side effects persist after the 1st line switch, the participant will have the option to switch to another AI not yet tried, or to tamoxifen at 20mg daily” NCT07071038

“For hormone receptor positive breast cancer, tamoxifen or aromatase inhibitors will be allowed as adjuvant hormone therapy for postmenopausal participants” NCT04024462

“Arm 1 subjects were injected Leuprolide Injectable Emulsion 42mg every 24 weeks for 48 weeks, and taked Tamoxifen Citrate Tablets 10mg bid for 48 weeks.” NCT06449027

“Ovarian function suppression (OFS) with endocrine therapies including either tamoxifen or aromatase-inhibitors will be administered for 5 years.” NCT05333328

“Endocrine therapy per physician´s choice with either tamoxifen 20mg or an aromatase inhibitor +/- GnRH analogue for premenopausal women and men” NCT05306041

“The intervention will include changes in medication (e.g. change from Letrozol to Tamoxifen, treatment for polyneuropathy, osteoporosis).” NCT06120595

“Premenopausal patients: Tamoxifen (10 mg, orally, twice daily, for 5 years) or Toremifene (60 mg, orally, once daily, for 5 years)” NCT07153757

“standard endocrine therapy( aromatase inhibitors or tamoxifen,Ovarian function suppression agents may be added if premenopausal)” NCT07213206

“(Tamoxifen, aromatase inhibitor or sequential hormonotherapy) is left to the investigator judgement in both groups (I and II).” NCT01564056

“["Letrozole","Anastrozole","Exemestane","Tamoxifen","Leuprolide, or other LHRH agonist (per investigator discretion)"]” NCT04569747

“either Anastrozole 1 mg po daily; Letrozole 2.5 mg po daily, Exemestane 25 mg po daily or Tamoxifen 20 mg po daily” NCT01897441

“A single hormonal agent (ie, Tamoxifen or Aromatase Inhibitor or Fulvestrant) administered daily while on study.” NCT02366130

Tamoxifen, letrozole, anastrozole, exemestane, fulvestrant, etc, selected at the discretion of the investigator.” NCT05983107

“The endocrine therapy used for the NET in this study will be anastrozole, letrozole, exemestane, or tamoxifen.” NCT07483307

Tamoxifen or aromatase inhibitors (Anastrozole, Letrozole, or Exemestane) combined with trastuzumab” NCT01950182

“All participants will receive tamoxifen (ApoTamox) for approximately 6 months (6 months + 1 week).” NCT04915846

“Non-steroidal AIs (anastrozole, letrozole); steroidal AI (exemestane); Fulvestrant or TamoxifenNCT02448420

“premenopausal: tamoxifen or toremifene; postmenopausal: letrozole or anastrozole or exemestane” NCT04383275

“Selective estrogen receptor modulator (SERM) - Tamoxifen 20 mg by mouth daily (pre-menopausal)” NCT06218303

“Endocrine Therapy: Tamoxifen 20mg, Letrozole 2.5mg, Anastrozole 1mg, or Exemestane 25mg PO qd” NCT02040857

“Goserelin acetate 3.6 mg every 4 weeks with tamoxifen 20 mg daily for premenopausal patients” NCT05755581

“either NCT or NET with goserelin and tamoxifen, followed by goserelin and anastrozole.” PMID 40331570 May 2025

Tamoxifen (20mg) will be given orally daily x 4 cycles. (Other Names: Nolvadex)” NCT03573648

tamoxifen or aromatase inhibitors will be allowed as adjuvant hormone therapy” NCT03493854

Tamoxifen: 10-20 mg, orally, twice daily (continuous), every 28 days” NCT05861830

“5. Tamoxifen 20mg oral administration every day (1 cycle = 4 weeks)” NCT06837792

“Chidamide+ exemestane/Fulvestrant/Letrozole/Anastrozole/TamoxifenNCT05890287

“or tamoxifen (20 mg per day orally; if premenopausal)” PMID 28238593 Feb 2017

“Neratinib plus Fulvestrant, Exemestane or TamoxifenNCT04460430

tamoxifen, Letrozole, Anastrazole, Exemestane, etc.” NCT04023292

“Patients with RS ≤ 15 are treated with tamoxifen.” NCT07671885

“20 mg of tamoxifen tablet by mouth once daily or” NCT06369285

“continue tamoxifen treatment (TAM group)” PMID 30643455 Dec 2018

Tamoxifen 20mg and anastrozole 1 mg” NCT01016665

“Sunitinib, Tamoxifen, Temsirolimus” NCT02788201

Tamoxifen 20 mg: once daily.” NCT07447024

tamoxifen oral daily tablet” NCT03820830

“Allowed ETs are tamoxifenNCT05894239

“Drug: TamoxifenNCT00309478

TamoxifenNCT03948568

NCT02057133

NCT05669768

NCT00411203

NCT00793377

NCT01075802

NCT03280563

NCT06184750

NCT06361940

NCT02488603

NCT06001762

NCT00310180

NCT06320990

NCT03528902

NCT00004205

NCT04292886

NCT00499083

NCT02132000

NCT05501704

NCT03382834

NCT06179303

NCT02603679

NCT01685255

NCT05512364

NCT04129216

NCT00003418

NCT00024336

NCT02395627

NCT00290654

NCT06195306

NCT00309491

NCT00126464

NCT02479256

NCT03906669

NCT02333370

NCT00206492

NCT02903121

NCT03058939

NCT04389580

NCT04961632

NCT01192308

NCT00038467

NCT02166944

NCT06942039

NCT02093351

NCT01189500

NCT05501158

NCT02322853

NCT03346200

NCT05128773

NCT01821066

NCT04985266

NCT00929591

NCT02070692

NCT03024580

NCT00290745

NCT07581834

NCT03354039

NCT02482740

NCT01194427

NCT05133674

NCT00684216

NCT00183963

NCT00006388

NCT00002646

NCT04504331

NCT00214110

NCT02970682

NCT05514054

NCT01194908

NCT00433589

NCT00912548

NCT00206544

NCT00003424

NCT02988986

NCT04666961

NCT00002644

NCT02728622

NCT04300790

NCT00412022

NCT00440349

NCT02979301

NCT00096369

NCT04200066

NCT06364267

NCT04933240

NCT00000529

NCT05941520

NCT00637871

NCT00365599

NCT01614210

NCT00165308

NCT00629278

NCT05659563

NCT00291759

NCT07145827

NCT04765098

NCT01196936

NCT07190443

NCT00118157

NCT00489944

NCT00066690

NCT02384239

NCT04997941

NCT00010140

NCT00293540

NCT00066703

NCT01293032

NCT03917082

NCT00066807

NCT02513849

NCT02936206

NCT00279448

NCT00171704

NCT03554044

NCT00424164

NCT00002579

NCT00537771

NCT00002679

NCT00305838

NCT06914674

NCT02801786

NCT02806544

NCT01393990

NCT00002680

NCT04906395

NCT04046159

NCT00287534

NCT00002580

NCT00068419

NCT00194779

NCT01027416

NCT02913430

NCT00009997

NCT05016349

NCT02764541

NCT05161195

NCT02285179

NCT06671912

NCT02584465

NCT01357772

NCT00590785

NCT00538330

NCT03211572

NCT01503905

NCT00295100

NCT00002920

NCT00053911

NCT00053898

NCT00849030

NCT00963209

NCT01553903

NCT00003080

NCT02890082

NCT00003042

NCT00002581

NCT01579734

NCT00375622

NCT00002967

NCT05306340

NCT05150652

NCT05463601

NCT00026585

NCT06507618

NCT04312347

NCT01257581

NCT00728949

NCT00053339

NCT03137368

NCT02835079

NCT07287098

NCT02206984

NCT02630693

NCT00052728

NCT05780567

NCT00738777

NCT02668666

NCT00002864

NCT00005822

NCT06033092

NCT00295646

NCT03423199

NCT05472792

NCT06492616

NCT00659373

NCT00003992

NCT02592083

NCT02824224

NCT04433494

NCT00253539

NCT00002784

NCT03272477

NCT00449514

NCT06979596

NCT02062489

NCT03870399

NCT00003035

NCT00006030

NCT00232661

NCT03045653

NCT02097459

NCT01298713

NCT00016341

NCT06223698

NCT03373708

NCT00003906

NCT01831076

NCT00003032

NCT03161353

NCT05982093

NCT02467686

NCT00814125

NCT03355157

NCT00893061

NCT02586675

NCT06434064

NCT04272801

NCT02101788

NCT05952557

NCT02311933

NCT00201851

NCT01771458

NCT00002582

NCT01758146

NCT02624973

NCT04134598

NCT00003678

NCT00002755

NCT04190056

NCT05035836

NCT00002777

NCT03112031

NCT00784680

NCT00286117

NCT03060304

NCT02269670

NCT00784862

NCT00036270

NCT00003679

NCT02914158

NCT03219476

NCT00784940

NCT00896155

NCT03351062

NCT01127295

NCT02291913

NCT00749138

NCT00002707

NCT00005886

NCT00241449

NCT00152178

NCT00764322

NCT05378269

NCT00002460

NCT05525481

NCT00047099

NCT00003680

NCT00002772

NCT00605267

NCT06440967

NCT02344940

NCT03011684

NCT07349069

NCT00919399

NCT06348134

NCT06404775

NCT05156892

NCT00233610

NCT00108069

NCT04570956

NCT02404844

NCT02995772

NCT05768139

NCT03879174

NCT00229697

NCT05200663

NCT01638247

NCT00005908

NCT01612871

NCT05101564

NCT00003857

NCT00210028

NCT00031720

NCT00002542

NCT07101159

NCT02993159

NCT07616973

NCT05891093

NCT00072462

NCT00866554

NCT00003013

NCT03879577

NCT00032136

NCT00543829

NCT02747004

NCT07019363

NCT02476786

NCT07502820

NCT04174352

NCT00003016

NCT00003953

NCT00002528

NCT00827307

NCT01220076

NCT00033683

NCT06075953

NCT01124695

NCT00034125

NCT04079517

NCT07535905

NCT00002529

NCT00398489

NCT03691493

NCT04059484

NCT02228681

NCT06630325

NCT03715413

NCT00492687

NCT02089386

NCT01971515

NCT02197897

NCT02278120

NCT00189358

NCT05774951

NCT04568096

NCT00002720

NCT00687102

NCT00002608

NCT02690870

NCT07289035

NCT05645536

NCT00004125

NCT00003050

NCT04852887

NCT02866955

NCT07499999

NCT00007904

NCT00041080

NCT04584853

NCT00999921

NCT00710970

NCT00541138

NCT00532454

NCT01622361

NCT00541086

NCT00492505

NCT00001436

NCT06355401

Known as ApoTamox “All participants will receive tamoxifen (ApoTamox) for approximately 6 months (6 months + 1 week).” NCT04915846
Known as Baby Tamoxifen “Randomized Double Blind Phase II Trial of Baby Exemestane vs Baby Tamoxifen in Post-menopausal Women at High Risk for Breast Cancer.” NCT06364267
Known as BabyTAM “The purpose of the study is to to compare low dose of exemestane (babyexe) versus low dose of tamoxifen (babytam) in terms of change of quality of life from baseline to 12 months.” NCT06364267
Known as Emblon ChEMBL registry synonym — accepted as the source's own label CHEMBL83
Known as Fentamox 10 ChEMBL registry synonym — accepted as the source's own label CHEMBL83
Known as Fentamox 20 ChEMBL registry synonym — accepted as the source's own label CHEMBL83
Known as I.C.I.46474 CITRATE ChEMBL registry synonym — accepted as the source's own label CHEMBL83
Known as ICI 46,474 ChEMBL registry synonym — accepted as the source's own label CHEMBL83
Known as ICI-47699 ChEMBL registry synonym — accepted as the source's own label CHEMBL83
Known as Kentadex ChEMBL registry synonym — accepted as the source's own label CHEMBL83
Known as Kessar ChEMBL registry synonym — accepted as the source's own label CHEMBL83
Known as Kessar 10 ChEMBL registry synonym — accepted as the source's own label CHEMBL83
Known as Kessar 20 ChEMBL registry synonym — accepted as the source's own label CHEMBL83
Known as Mammaton ChEMBL registry synonym — accepted as the source's own label CHEMBL83
Known as Noltam ChEMBL registry synonym — accepted as the source's own label CHEMBL83
Known as NOLVADEX NOLVADEX (tamoxifen)” NCT00232661
Known as Nolvadex (tamoxifen) Nolvadex (tamoxifen)NCT01897441
1

Nolvadex (tamoxifen)NCT00240071

Known as Nolvadex d ChEMBL registry synonym — accepted as the source's own label CHEMBL83
Known as Nolvadex fte ChEMBL registry synonym — accepted as the source's own label CHEMBL83
Known as Nourytam ChEMBL registry synonym — accepted as the source's own label CHEMBL83
Known as Novaldex ChEMBL registry synonym — accepted as the source's own label CHEMBL83
Known as NSC-180973 “Arm I: Antiestrogen Therapy. Tamoxifen, TMX, NSC-180973.” NCT00929591
Known as NSC-727681 ChEMBL registry synonym — accepted as the source's own label CHEMBL83
Known as NSC-757345 ChEMBL registry synonym — accepted as the source's own label CHEMBL83