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A Randomised Phase III Trial comparing 16 to 18 weeks of neoadjuvant Exemestane (25mg daily), Letrozole (2.5mg), or Anastrozole(1mg) in postmenopausal Women with Clinical Stage II and III Estrogen Receptor Positive Breast Cancer - Z1031

A Randomised Phase III Trial comparing 16 to 18 weeks of neoadjuvant Exemestane (25mg daily), Letrozole (2.5mg), or Anastrozole(1mg) in postmenopausal Women with Clinical Stage II and III Estrogen Receptor Positive Breast Cancer - Z1031

Status
Active, not recruiting
Phases
Phase 3
Study type
Interventional
Source
EU CTR
Registry ID
EUCTR2006-000513-37-IE
Enrollment
375
Registered
2006-05-17
Start date
2006-09-13
Completion date
Unknown
Last updated
2022-04-19

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Breast Cancer

Interventions

Product Name: Anastrozole Pharmaceutical Form: Tablet Product Name: Letrozole Pharmaceutical Form: Tablet Product Name: Exemestane Pharmaceutical Form: Tablet

Sponsors

ACOSOG
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: A patient will be eligible for inclusion in this study only if all the following criteria apply: 1. The patients must have an EOC/Zubrod performance status of = one year or no menses for =65 years) yes F.1.3.1 Number of subjects for this age range

Exclusion criteria

Exclusion criteria: A patient will not be eligible for inclusion in this study only if all the following criteria apply: 1. Inflammatory breast cancer defined as clinically significant erythema of the breast and/or documented dermal lymphatic invasion (not direct skin invasion by tumour or peau d’orange without erythema) 2. Prior treatment for breast cancer, including radiation, endocrine therapy, chemotherapy or investigational agent. 3. Patient has received hormone replacement therapy of any type, megestrol acetate, or raloxifene within one week prior to registration. 4. Patient has distant metastases (M1) excluding isolated ipsilateral supraclavicular node involvement 5. Patient does not agree to undergo mastectomy or lumpectomy after neoadjuvant aromatase inhibitor therapy 6. Patient is enrolled in another neoadjuvant clinical trial for treatment of the existing breast cancer.

Design outcomes

Primary

MeasureTime frame
Primary end point(s): ;Main Objective: The primary objective is to determine whether anastrozole, exemestane or Letrozole administered for 16 to 18 weeks as neoadjuvant endocrine therapy for post menopausal patients with stage II or III ER+ breast cancer should be chosen as the aromatase inhibitor arm of a future study that will compare neoadjuvant aromatase inhibitor treatment with neoadjuvant chemotherapy.;Secondary Objective: Secondary Objectives: 1. To compare the neoadjuvant treatment regimens relative to the rates of improvement in surgical outcome defined as follows: For T4 a,b,c tumours: mastectomy with primary skin closure and negative surgical margins. For T3 tumours and T2 tumours classified as requiring a mastectomy at baseline: breast conserving surgery with negative final margins. For T2 tumours classified as potential candidates for breast conservation: breast conserving surgery at first attempt.

Countries

Ireland

Outcome results

None listed

Source: EU CTR (via WHO ICTRP) · Data processed: Feb 4, 2026