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A phase 3 randomized, placebo-controlled, double-blind study of oral CCI-779 administered in combination with letrozole vs. letrozole alone as first line hormonal therapy in postmenopausal women with locally advanced or metastatic breast cancer - HORIZON trial

A phase 3 randomized, placebo-controlled, double-blind study of oral CCI-779 administered in combination with letrozole vs. letrozole alone as first line hormonal therapy in postmenopausal women with locally advanced or metastatic breast cancer - HORIZON trial

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
EU CTR
Registry ID
EUCTR2004-000015-25-SK
Enrollment
1236
Registered
2004-06-11
Start date
2004-07-16
Completion date
Unknown
Last updated
2012-06-26

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

Conditions

locally advanced or metastatic breast cancer (stage 3B or 4)

Interventions

Product Name: Temsirolimus Product Code: CCI-779 10mg Pharmaceutical Form: Tablet INN or Proposed INN: Pending CAS Number: 162635-04-3 Current Sponsor code: CCI-779 Other descriptive name: Temsirolim

Sponsors

Wyeth Research Division of Wyeth Pharmaceuticals Inc. Clinical Research and Development
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1. Women aged >18 years. 2. Postmenopausal subjects, defined by at least one of the following: - >= 60 years of age - 12 months prior to day 1 - 60 % (corresponds to Eastern Cooperative Oncology Group [ECOG] performance status 0 to 2). Are the trial subjects under 18? no Number of subjects for this age range: F.1.2 Adults (18-64 years) yes F.1.2.1 Number of subjects for this age range F.1.3 Elderly (>=65 years) yes F.1.3.1 Number of subjects for this age range

Exclusion criteria

Exclusion criteria: 1. Extensive visceral disease including bilateral diffuse lymphangitic involvement of the lung with more than 50% lung involvement, evidence of symptomatic central nervous system (CNS) metastases, extensive hepatic involvement defined as involvement of more than one third of the liver confirmed by sonogram and/or CT scan 2. Subjects with bone as the only site of disease. 3. Prior radiation therapy to the site of measurable disease for subjects with a solitary measurable lesion. 4. History of inflammatory breast cancer (IBC). 5. More than 1 regimen of chemotherapy (including antibody and/or cytotoxic therapy) in the metastatic setting. Subjects may have received prior adjuvant or neoadjuvant chemotherapy. 6. Chemotherapy or immunosuppressive agents <=2 weeks prior to day 1 of treatment on study, with the exception of systemic corticosteroids administered for physiologic replacement, or as an antiemetic after discussion with the medical monitor. 7. Hormonal treatment (including aromatase inhibitors) in the metastatic setting with the exception of prior short-term (< 14 days consecutive) use. 8. Adjuvant trastuzumab (Herceptin) or tamoxifen <= 2 weeks prior to day 1 of treatment on study. 9. Aromatase inhibitors as adjuvant therapy <= 12 months prior to day 1 of treatment on study. 10. Disease refractory (i.e., PD within 6 months from initiation of therapy) to previous adjuvant antiestrogen therapy. 11. Major surgery, biological therapy, immunologic therapy or local radiotherapy (subjects must not have had prior cumulative radiotherapy to more than 25% of the marrow) <= 2 weeks prior to day 1 of treatment on study.

Design outcomes

Primary

MeasureTime frame
Main Objective: Assessment of overall progression free survival (PFS);Secondary Objective: Assessment of PFS at 12 and 24 months; Time to treatment failure; Time to progression; Overall response rate; Clinical benefit (CR+PR+ SD > 8 wks/24 wks); Duration of response; Time to initiation of subsequent anticancer therapy; Survival; Safety; Health outcomes; Prognostic markers and pharmacogenomics analysis ;Primary end point(s): Overall progression free survival is the primary endpoint of the study, and the clinical activity evaluation will be made using the RECIST guidelines. Non-target lesions, including bone disease, will only be assessed for CR, incomplete response/SD, and PD.

Countries

Latvia, Lithuania, Slovakia, United Kingdom

Outcome results

None listed

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