Gilead Sciences’ HIV prevention business reached a milestone, exceeding $1 billion in quarterly sales for the first time. | Gilead’s HIV prevention business reached a milestone, exceeding $1 billion in quarterly sales for the first time, as highlighted by CEO Daniel O’Day. But one group of analysts is raising doubts about the long-term growth of Yeztugo, the company’s much-touted long-acting PrEP option.

Gilead Sciences narrowly beat sales expectations for its HIV PrEP drug, Yeztugo. Gilead stock slipped, still in a downtrend.

Some analysts see warning signs in crucial drug launches from Gilead and Merck, while an important trial readout could change Pfizer’s growth trajectory.