AnaptysBio shares surged 37% in premarket trading Wednesday after a mid-stage trial evaluating a rheumatoid arthritis treatment achieved its primary endpoint. Shares were recently trading around $17.

The positive trial results have not only demonstrated rosnilimab's potential in treating RA but have also validated AnaptysBio's scientific approach in targeting PD-1 co-inhibitory receptors on ...

Achieved statistical significance on primary endpoint at Week 12 on mean change from baseline DAS-28 CRP across all rosnilimab doses vs.