~56 spots leftby Apr 2026

Study Evaluating CCI-779 and Letrozole in Post-menopausal Women With Breast Cancer

Recruiting in Palo Alto (17 mi)
+112 other locations
Age: 18+
Sex: Female
Travel: May Be Covered
Time Reimbursement: Varies
Trial Phase: Phase 3
Waitlist Available
Sponsor: Wyeth is now a wholly owned subsidiary of Pfizer
No Placebo Group
Pivotal Trial (Near Approval)
Prior Safety Data

Trial Summary

What is the purpose of this trial?

In this clinical research study, postmenopausal subjects with metastatic breast cancer will be given either the combination of temsirolimus (CCI-779) and letrozole or a placebo and letrozole in first-line hormonal treatment. The primary endpoint of this study is to determine overall progression free survival. Individual subjects will participate in the active treatment phase of the study until disease progression or withdrawal of consent, provided that test article is being tolerated. All subjects will be asked to participate in the long-term follow-up phase of the study, which includes follow-up every 3 months until disease progression (for subjects who withdraw for reasons other than documented progressive disease) or until any new cancer treatment is received, and for survival. The estimated duration of study participation is 34 months.

Research Team

MM

Medical Monitor

Principal Investigator

Wyeth is now a wholly owned subsidiary of Pfizer

Eligibility Criteria

Inclusion Criteria

Women aged greater than 18 years.
Postmenopausal subjects
Confirmed diagnosis of locally advanced (not amenable to curative surgery and/or radiation) or metastatic breast cancer (Stage 3B or 4 respectively, by American Joint Committee on Cancer Criteria)

Treatment Details

Interventions

  • CCI-779 (mTOR Inhibitor)
  • Letrozole (Aromatase Inhibitor)

Find a Clinic Near You

Who Is Running the Clinical Trial?

Wyeth is now a wholly owned subsidiary of Pfizer

Lead Sponsor

Trials
626
Recruited
248,000+
Dr. Patrizia Cavazzoni profile image

Dr. Patrizia Cavazzoni

Wyeth is now a wholly owned subsidiary of Pfizer

Chief Medical Officer

MD from McGill University

Dr. Albert Bourla profile image

Dr. Albert Bourla

Wyeth is now a wholly owned subsidiary of Pfizer

Chief Executive Officer since 2019

PhD in Biotechnology from Aristotle University of Thessaloniki