Amgen IncKey growth drivers (Repatha, rare disease) grew 24% and now 70% of sales, offsetting legacy drug declines.

Amgen's portfolio of key growth drivers grew 24% year-over-year in the most recent quarter and now accounts for 70% of total sales, signaling that a new core business is already offsetting patent-driven declines in legacy drugs. This group includes therapies such as Repatha and a rare disease portfolio, and its aggregate growth is helping to counterbalance a 32% drop in combined sales of older products Prolia and XGEVA. Management expects the erosion of legacy drugs to accelerate, but the scale and momentum of the newer portfolio demonstrate that the company's transition is well underway. The market's focus on the patent cliff may be underestimating the existing strength of this faster-growing segment.
Amgen IncKey growth drivers (Repatha, rare disease) grew 24% and now 70% of sales, offsetting legacy drug declines.
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