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Anastrozole

Phase 3

Bone Density | Small molecule | Endocrine |AstraZeneca PLC|Last Updated: Nov 18, 2021

Target and mechanism

ModalitySmall molecule

Also known as Anastrozole (ARIMIDEX™), Anastrozole and goserelin, Anastrozole (Arimidex)

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindACTIVE_CONTROLLEDDMC
Total Trials1
Total Enrollment308

FDA Designations

No designations recorded

Clinical trial landscape

Anastrozole · 13 trials · 5 indications

Phase 3 8Phase 2 5
NCT00295620Secondary Adjuvant Long Term Study With ArimidexBreast Cancer
COMPLETED3,484 Analytics
NCT00637182Gynecomastia Extension StudyGynecomastia
COMPLETED- Analytics
NCT00784862ATAC - Pharmacokinetics (PK) Sub-ProtocolBreast Cancer
COMPLETED9,358 Analytics
NCT00784940ATAC - Bone Density Sub-ProtocolBone Density
COMPLETED308 Analytics
NCT00784680ATAC - Quality of Life Sub-ProtocolQuality of Life
COMPLETED308 Analytics
NCT00286117ITA - Clinical Study Comparing ARIMIDEX™ With NOLVADEX™ in Women With Breast Cancer Treated With NOLVADEX for at Least 2 YearsBreast Cancer
COMPLETED448 Analytics
NCT00814125ATAC - Endometrial Sub-ProtocolBreast Cancer
COMPLETED285 Analytics
NCT003005083 Years of Anastrozole vs. no Treatment as Extended Adjuvant Therapy for Postmenopausal Women With Breast CancerBreast Neoplasms
COMPLETED856 Analytics
PHASE3COMPLETED
Secondary Adjuvant Long Term Study With Arimidex
Breast CancerUnlock trial analytics
PHASE3COMPLETED
Gynecomastia Extension Study
GynecomastiaUnlock trial analytics
PHASE3COMPLETED
ATAC - Pharmacokinetics (PK) Sub-Protocol
Breast CancerUnlock trial analytics
PHASE3COMPLETED
ATAC - Bone Density Sub-Protocol
Bone DensityUnlock trial analytics
PHASE3COMPLETED
ATAC - Quality of Life Sub-Protocol
Quality of LifeUnlock trial analytics
PHASE3COMPLETED
ITA - Clinical Study Comparing ARIMIDEX™ With NOLVADEX™ in Women With Breast Cancer Treated With NOLVADEX for at Least 2 Years
Breast CancerUnlock trial analytics
PHASE3COMPLETED
ATAC - Endometrial Sub-Protocol
Breast CancerUnlock trial analytics
PHASE3COMPLETED
3 Years of Anastrozole vs. no Treatment as Extended Adjuvant Therapy for Postmenopausal Women With Breast Cancer
Breast NeoplasmsUnlock trial analytics

Study Endpoints

Primary Endpoints

Disease-free Survival After Prolonged Endocrine Treatment
DFS was defined as the time from two years after randomization to the earliest occurrence of loco-regional recurrence, distant recurrence, contralateral new breast cancer, second cancer or death from any cause, assessed up to a maximum of 8.5 years

To determine whether 5 years of additional Anastrozole was more effective than 2 years of additional Anastrozole after 5 years of adjuvant endocrine therapy in terms of disease-free survival.

Change in linear dimensions of the breast
Steady state plasma trough concentrations of tamoxifen, desmethyltamoxifen and anastrozole
24±4 hours after previous dose
Time to withdrawal
Time to recurrence
The primary objective of this analysis was to assess the difference in disease-free survival between post-menopausal women with hormone receptor-positive early breast cancer who switched from tamoxifen to anastrozole and those who continued on tamoxifen
Withdrawl
Death
Recurrence-free and overall survival
Progression Free Survival (PFS), the Length of Time, in Months, That Patients Were Alive From Their First Date of Protocol Treatment Until Worsening of Their Disease
18 months

Progression Free Survival (PFS) is defined as the interval, in months, from the date of first treatment to the date of disease progression or death, whichever occurred first.

Assess anastrazole PK in boys aged 11-18 yrs. in pubertal boys with gynecomastia of less than 12 months duration
Determine the feasibility and efficacy of the combination of these 2 drugs in these patients
Objective Response Rate (ORR)
3 months

ORR was determined as the sum of the Complete Response (CR) rate + Partial Response (PR) rates. * CR = Complete disappearance of all clinically- or pathologically-detectable malignant disease for at least 4 weeks. * PR = ≥ 50% decrease in tumor size for at least 4 weeks, without any new lesion or any ≥ 25% increase in size of any lesion. All measurements by ruler or calipers.

To assess the difference in disease-free survival between post-menopausal women with hormone receptor-positive early breast cancer who switched from tamoxifen to anastrozole and those who continued to receive tamoxifen

Secondary Endpoints

Overall Survival After Prolonged Endocrine Treatment
Overall survival was defined as the time from two years after randomization to death due to any cause, assessed up to a maximum of 8.5 years
Time to First Clinical Fracture
Time to first clinical fracture was defined as time to first clinical fracture, in the period from 2 years until 5 years after randomization for each patient.
Time to Secondary Carcinoma
Risk of secondary carcinoma was defined as the time from two years after randomization to first occurrence of new secondary cancer without new breast cancer (local or contralateral), assessed up to a maximum of 8.5 years
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Study Design & Arms

AllocationRANDOMIZED
MaskingNONE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Arm A: AnastrozolEXPERIMENTAL1 mg per day for 2 years
Arm B: AnastrozolEXPERIMENTAL1 mg per day for 5 years
1ACTIVE_COMPARATORArimidex 1mg + Nolvadex placebo
2ACTIVE_COMPARATORArimidex placebo + Nolvadex 20mg
3ACTIVE_COMPARATORArimidex 1mg + Nolvadex 20mg
Bevacizumab/anastrozoleEXPERIMENTALBevacizumab 10mg/kg IV every 2 weeks \[patients who are also receiving trastuzumab have the option to receive their bevacizumab at 15 mg/kg every 3 weeks instead of 10 mg/kg every 2 weeks (see Trastuzumab section below)\] and anastrozole (1 mg orally daily). Treatment will be given in 4-week cycles.
Bevacizumab/fulvestrantEXPERIMENTALBevacizumab/fulvestrant (with trastuzumab in HER2+ patients). Bevacizumab 10mg/kg IV every 2 weeks \[patients who are also receiving trastuzumab have the option to receive their bevacizumab at 15 mg/kg every 3 weeks instead of 10 mg/kg every 2 weeks (see Trastuzumab section below)\] fulvestrant (500 mg IM on Day 1 of Cycle 1, followed by 250 mg IM of fulvestrant on Day 15 of Cycle 1. On Day 1 of Cycle 2 and the first day of all subsequent cycles thereafter, patients in this treatment arm will receive 250 mg IM of fulvestrant). Treatment will be given in 4-week cycles.
Anastrozole + GoserelinEXPERIMENTALParticipants received goserelin 3.6 mg subcutaneously monthly. Beginning on Day 22 after the first dose of goserelin, participants began taking anastrozole 1 mg orally daily. No dose attenuation or escalation was allowed for either goserelin or anastrozole.

Interventions

NameTypeDescription
AnastrozoleDRUG1mg tablet daily
TamoxifenDRUG20mg, orally, once daily
Anastrozole (Arimidex)DRUG1mg, orally, once daily
Tamoxifen (Nolvadex)DRUG20mg, orally, once daily
Nolvadex placeboDRUG -
Arimidex placeboDRUG -
BevacizumabDRUGBevacizumab 10mg/kg IV every 2 weeks
FulvestrantDRUGfulvestrant (500 mg IM on Day 1 of Cycle 1, followed by 250 mg IM of fulvestrant on Day 15 of Cycle 1. On Day 1 of Cycle 2 and the first day of all subsequent cycles thereafter, patients in this treatment arm will receive 250 mg IM of fulvestrant).
Anastrozole (ARIMIDEX™)DRUG -
Anastrozole and goserelinDRUG -
Goserelin (Zoladex)DRUGGoserelin is a palliative treatment of advanced breast cancer in pre- and perimenopausal women
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Eligibility Criteria

Age Range18 Years to 80 Years
SexFEMALE
Healthy VolunteersNo
Study Sites60

Inclusion criteria: 1. Postmenopausal patients with histologically confirmed, local radically treated invasive or minimal-invasiv Mammacarcinom with or without previous chemotherapie and/or radiotherapie. 2. No distant metastasis at randomization 3. No relapse at randomization 4. TNM- classificatio...

Countries:AustriaItalyUnited StatesFranceGermany
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