SonoThera

SonoThera is a South San Francisco biotech developing an ultrasound-guided, nonviral platform for delivering genetic medicines. Instead of the viral vectors that dominate gene therapy, it uses focused ultrasound and injectable microbubbles - a process called sonoporation - to open transient pores in target cells and shuttle DNA or RNA payloads into specific organs. The pitch is delivery that is targeted, potentially redosable, and decoupled from the immune and manufacturing headaches of viruses. The company raised a $125M Series B in June 2026 and is pushing lead programs in Duchenne muscular dystrophy and polycystic kidney disease toward the clinic.