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Tamoxifen

Phase 3

Breast Cancer | Small molecule | Oncology |AstraZeneca PLC|Last Updated: Oct 19, 2020

Target and mechanism

ModalitySmall molecule

Also known as Tamoxifen (Nolvadex)

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindACTIVE_CONTROLLEDBiomarker
Total Trials3
Total Enrollment4,133

FDA Designations

No designations recorded

Clinical trial landscape

Tamoxifen · 4 trials · 2 indications

Phase 3 3Phase 2 1
NCT00309491Randomized Study Comparing Tamoxifen vs. Tamoxifen + Aminoglutethimide in Postmenopausal Receptor-positive PatientsEarly-stage Breast Cancer
COMPLETED2,021 Analytics
NCT00605267Arimidex/Tamoxifen Neo Adjuvant Study in Premenopausal Patients With Breast Cancer Under Anti Hormonal TreatmentBreast Cancer
COMPLETED197 Analytics
NCT00291759ABCSG 8 - Adjuvant Treatment in Patients With Hormone Receptor-positive Breast Cancer With Good to Moderate Differentiation.Breast Cancer
COMPLETED3,858 Analytics
PHASE3COMPLETED
Randomized Study Comparing Tamoxifen vs. Tamoxifen + Aminoglutethimide in Postmenopausal Receptor-positive Patients
Early-stage Breast CancerUnlock trial analytics
PHASE3COMPLETED
Arimidex/Tamoxifen Neo Adjuvant Study in Premenopausal Patients With Breast Cancer Under Anti Hormonal Treatment
Breast CancerUnlock trial analytics
PHASE3COMPLETED
ABCSG 8 - Adjuvant Treatment in Patients With Hormone Receptor-positive Breast Cancer With Good to Moderate Differentiation.
Breast CancerUnlock trial analytics

Study Endpoints

Primary Endpoints

Overall survival
Best Overall Response Rate (BORR) (Calliper)
24 weeks

The BORR were defined as the percentage of patients with confirmed CR or PR in the ITT population during 24 weeks pre-operative treatment period (based on the data from calliper measurement). CR (or PR) criteria are met at 2 or more time in points every 4 weeks. Per RECIST Criteria (V1.0) and assessed by Calliper: Complete Response (CR), Disappearance of all target lesions; Partial Response (PR), \>= 30% decrease in the sum of the longest diameter of target lesions; Overall Response (OR) = CR + PR.

Best Overall Response Rate (BORR) (US)
24 weeks

The BORR were defined as the percentage of patients with confirmed CR or PR in the ITT population during 24 weeks pre-operative treatment period (based on the data from ultra sound (US) measurement). CR (or PR) criteria are met at 2 or more time in points every 4 weeks. Per RECIST Criteria (V1.0) and assessed by US: Complete Response (CR), Disappearance of all target lesions; Partial Response (PR), \>= 30% decrease in the sum of the longest diameter of target lesions; Overall Response (OR) = CR + PR.

Best Overall Response Rate (BORR) (MRI/CT)
24 weeks

The BORR were defined as the percentage of patients with confirmed CR or PR in the ITT population during 24 weeks pre-operative treatment period(based on the data from magnetic resonance imaging (MRI) or computed tomography (CT) measurement). CR (or PR) criteria are met at either 12 weeks or 24 weeks. Per RECIST Criteria (V1.0) and assessed by MRI or CT: Complete Response (CR), Disappearance of all target lesions; Partial Response (PR), \>= 30% decrease in the sum of the longest diameter of target lesions; Overall Response (OR) = CR + PR.

To assess the difference in event free survival and overall survival (subject to stand-alone or combined/meta-analysis) between postmenopausal women with HR +ve early BC who switched from tamoxifen to anastrozole and those who continued on tamoxifen.
Breast Density

Secondary Endpoints

Recurrence-free survival
Side-effect profiles
Bone Mineral Density (BMD) Lumbar Spine
Assessed at baseline and after 24 weeks of treatment
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Study Design & Arms

AllocationRANDOMIZED
MaskingNONE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Group IEXPERIMENTALTamoxifen alone
Group IIEXPERIMENTALTamoxifen + Aminoglutethimide
1ACTIVE_COMPARATORTamoxifen
2EXPERIMENTALAnastrazole (Arimidex)

Interventions

NameTypeDescription
Tamoxifen aloneDRUG2 x 20 mg tamoxifen daily, start of therapy within 4 weeks after surgery; therapy duration 5 years
Tamoxifen + AminoglutethimideDRUG2 x 20 mg tamoxifen daily (5 years) plus Aminoglutethimide daily (first 2 years) * 1st therapy week:125mg/-/125mg Aminoglutethimide daily * 2nd therapy week: 125mg/-/250mg Aminoglutethimid daily * as of 3rd therapy week: 250mg/-/250mg Aminoglutethimid daily
TamoxifenDRUG20 mg once daily oral dose
Anastrazole (Arimidex)DRUG1 mg once daily oral dose
Goserelin acetate (Zoladex)DRUG3.6mg/month depot injection
AnastrozoleDRUG -
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Eligibility Criteria

Age Range50 Years to 80 Years
SexFEMALE
Healthy VolunteersNo

Inclusion Criteria: * Postmenopausal patients with histologically verified, locoradically treated, invasive or minimally invasive breast cancer * Hormone receptor-positive status * More than 6 histologically examined lymph nodes * Laboratory parameters 1. hematopoiesis: \> 3500/µl leucocytes, \>...

Countries:JapanAustriaUnited StatesItaly
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Competitive Landscape -Breast Cancer 399 trials

Top 20 of 91 competitors

CompanyTickerTrialsLead PhaseDrugs
AstraZeneca PLCAZN46PHASE3Fulvestrant, Capivasertib
Merck & Co., Inc.MRK12PHASE3Pembrolizumab, Paclitaxel, Doxorubicin, Epirubicin, Cyclophosphamide
Eli Lilly and CompanyLLY27PHASE3Abemaciclib, Standard Adjuvant Endocrine Therapy
BioNTech SE Sponsored ADRBNTX7PHASE3DB-1303/BNT323, T-DM1
Gilead Sciences, Inc.GILD13PHASE3Sacituzumab Govitecan-hziy, Eribulin, Capecitabine Product, Gemcitabine, Vinorelbine
Novartis AG Sponsored ADRNVS30PHASE3Ribociclib
Pfizer Inc.PFE34PHASE3ARV-471, Fulvestrant
BeOne Medicines Ltd. Sponsored ADRONC5PHASE3BGB-43395, Letrozole, Abemaciclib, Palbociclib, Ribociclib
Olema Pharmaceuticals, Inc.OLMA5PHASE3Palazestrant, Fulvestrant, Anastrozole, Letrozole, Exemestane
Jazz Pharmaceuticals Public Limited CompanyJAZZ3PHASE3Zanidatamab, Trastuzumab, Eribulin, Vinorelbine, Gemcitabine
Celcuity Inc.CELC3PHASE3Gedatolisib, Palbociclib, Fulvestrant, Alpelisib
Relay Therapeutics, Inc.RLAY2PHASE3Zovegalisib, Capivasertib, Fulvestrant
GSK plc Sponsored ADRGSK2PHASE3Niraparib
Greenwich LifeSciences, Inc.GLSI1PHASE3GLSI-100
Bristol-Myers Squibb CompanyBMY5PHASE2Iza-bren, Nab-paclitaxel, Paclitaxel, Capecitabine, Carboplatin
BriaCell Therapeutics CorpBCTX1PHASE3SV-BR-1-GM, Cyclophosphamide, Interferon infiltration of the inoculation site, Retifanlimab, Treatment of Physician's Choice
Incyte CorporationINCY4PHASE2Ruxolitinib, Capecitabine, Regorafenib
Natera, Inc.NTRA3PHASE2Discontinuation of the anti-HER2 maintenance therapy
Puma Biotechnology, Inc.PBYI3PHASE2Neratinib, Loperamide, Colesevelam
Atossa Therapeutics, Inc.ATOS1PHASE2endoxifen, goserelin
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