If you’re a woman with HER2 positive breast cancer, stand up right now and cheer: Tykerb, a new drug approved this week by the FDA, has just doubled the arsenal of effective treatments.
Up till now, Herceptin has been the only somewhat effective treatment for HER-2 positive cancer, which affects one-third of women with invasive breast cancer.
Unfortunately, Herceptin doesn’t work for all women, and it also tends to lose its effectiveness over time. In addition, it’s been shown to cause

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