, Columnist
Regeneron's Eylea Protection Is Weakening
Another combo failure leaves its best-selling drug exposed to a Novartis threat.
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It's not looking good for Eylea, Regeneron Pharmaceuticals Inc.'s best-selling medicine.
Earlier this month, Novartis AG reported strong trial results for a possible competitor to the blockbuster eye drug. And on Monday, Regeneron announced it was giving up trying to combine Eylea with another medicine -- an effort that might have helped defend against Novartis's entry.
