Pfizer drug shows significant promise in late-stage breast cancer

6 December 2012

US drugs behemoth Pfizer (NYSE: PFE) has presented encouraging data from a randomized Phase II clinical trial that showed PD-0332991 (PD-991) in combination with Novartis' Femara (letrozole) significantly extended progression-free survival (PFS) compared with letrozole alone in post-menopausal patients with estrogen receptor positive (ER+), human epidermal growth factor receptor 2 negative (HER2-) locally advanced or metastatic breast cancer.

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