We focus to look at key drivers of biotech stocks' price movement on 23 April 2025.

Ensysce Biosciences (NASDAQ: ENSC) received a USPTO Notice of Allowance for a patent covering composition and method claims for PF9001, a methadone prodrug using its TAAP and MPAR technologies to improve safety in opioid use disorder treatment. Shares closed up 96% at US$3.67.