Amgen Inc.'s PCSK9 inhibitor Repatha (evolocumab) remains a long way off from driving the kind of revenue growth that the company needs to make up for declining sales of its legacy blockbuster products, including an unexpected 15% drop for Enbrel (etanercept) in the first quarter.
At $49m, Repatha's first quarter sales were three times higher than the $16m in revenue that the PCSK9 inhibitor generated...





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