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Biogen's Spinraza Sales Plateau; The Challenge Is Keeping Up With The Successful Launch

 
• By Jessica Merrill

Sales of Biogen's blockbuster rare disease drug moderated in the first quarter as the company worked through the bolus of urgent infant and pediatric patients awaiting treatment in the US.

Arrows miss target
Spinraza revenues missed analyst targets

Biogen Inc.'s Spinraza (nusinersen) is the company's big near-term growth driver, so the fact that sales of the drug for the life-threatening neurodegenerative condition spinal muscular atrophy (SMA) plateaued in the first quarter is worrying to investors. First quarter sales of Spinraza totaled $364m, roughly flat with the fourth quarter, Biogen reported April 24.

Nonetheless, Spinraza is on track to exceed 2017 revenues and become a blockbuster in its second full year on the...

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