Neoadjuvant letrozole in postmenopausal estrogen and/or progesterone receptor positive breast cancer: a phase IIb/III trial to investigate optimal duration of preoperative endocrine therapy.

ABSTRACT:

Background

In recent years, preoperative volume reduction of locally advanced breast cancers, resulting in higher rates of breast-conserving surgery (BCS), has become increasingly important also in postmenopausal women. Clinical interest has come to center on the third-generation nonsteroidal aromatase inhibitors (AIs), including letrozole, for such neoadjuvant endocrine treatment. This usually lasts 3-4 months and has been extended to up to 12 months, but optimal treatment duration has not been fully established.

Methods

This study was designed as a multicenter, open-label, single-arm, exploratory phase IIb/III clinical trial of letrozole 2.5 mg, one tablet daily, for 4-8 months. The primary objective was to investigate the effect of neoadjuvant treatment duration on tumor

SUBMITTER: Krainick-Strobel UE 

PROVIDER: S-EPMC2270851 | biostudies-literature | 2008 Feb

REPOSITORIES: biostudies-literature