California Biotech Lays Off Nearly All Staff After 2 Deaths in Cell Therapy Trials

Biotech company Artiva Biotherapeutics plans to lay off roughly 94 percent of its workforce and abandon its cell therapy treatment for rheumatoid arthritis after clinical trial data showed a lack of long-term benefits and two patient deaths.
Data gathered during clinical trials showed AlloNK—an off-the-shelf therapy that targets and kills B cells in treating autoimmune diseases—was initially effective, the San Diego-based company stated in an Oct. 27 press release. However, updated longer-term data did not show enough benefits to justify further development.
As such, plans for a Phase 3 trial have been dropped, and the company has filed a Worker Adjustment and Retraining Notification (WARN) notice with the California Employment Development Department confirming the incoming layoffs. The layoffs are expected to impact more than 100 staff members….