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Innovent-Spero License for SP001 Signals Phase 2 Upside for SPRO

Jul 14, 2026, 6:05 AM EDT2 sourcesAI-analyzed

Why it may matterVerify against the original reporting

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.

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What happened, with direct paths to the underlying reporting

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.

Innovent-Spero ink exclusive global rights to IBI355 (SP001), excluding Greater China.
Deal totals approximately $1.1 billion in upfronts and milestones to Innovent.
Spero will push SP001 into Phase 2 for IgG4-RD in Q2 2027.
Innovent plans a China Phase 2 for Sjögren's disease by early 2027.
CD40L-targeted SP001 could broaden immune-disease opportunities beyond IgG4-RD.

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