Innovent Biologics and Spero Therapeutics announced an exclusive license for IBI355 (SP001), granting Spero worldwide rights except Greater China. The deal values SP001’s potential at about $1.1 billion to Innovent, with SPRO targeting a Phase 2 readout for IgG4-RD in 2027 and Innovent planning a Sjögren’s disease Phase 2 in China by early 2027. The collaboration validates SP001 and could lift SPRO's long-term pipeline value.
License validation of SP001 and near-term Phase 2 catalysts improve SPRO's long-run value; however, near-term upside depends on trial outcomes and milestone cash flow to SPRO's shareholders.
Bullish on SPRO over 12–24 months as SP001 advances and deal validates the platform.
Corporate Developments; aligns with strategic licensing and pipeline expansion in immunology.