Zytiga Still Working After 3 Years

Michael Wells, 65, a retired construction worker from Oakville in California's Napa Valley, was diagnosed nearly 12 years ago with prostate cancer that had spread to his bones. Standard hormone and radiation treatments kept it in check for many years, but when it started growing, he enrolled in the clinical trial study of Zytiga.

Zytiga gave him high blood pressure but other than that, "I have not noticed any difference taking the pills -- I've always had hot flashes" on prostate medicines, he said.

He has now been on Zytiga for three years now, and scans show his cancer is in check.

"It's worked for me, and it's still working," Wells said.