William Blair has initiated coverage on Apellis Pharmaceuticals, Inc. APLS and notes that Apellis was the first company to successfully target complement C3, which has led to the approval of two therapies: Empaveli (systemic pegcetacoplan) for paroxysmal nocturnal hemoglobinuria and Syfovre (intravitreal pegcetacoplan) for geographic atrophy secondary to age-related macular degeneration.William Blair writes that although Empaveli has established a solid position in the PNH market, short-term challenges are ...