Aisling, Clarus Make Huge Bets On Royalties

When was the last time a life science venture firm spent close to $50 million all in one go? It doesn't happen often, but Aisling Capital and Clarus Ventures have each put up $48.5 million for a tiny slice of sales royalties from ibrutinib, a promising cancer drug that could receive FDA approval this calendar year or early next.