Reported Sunday, Celldex Presents Phase 1 CDX-622 Data At EAACI 2026 Showing Bispecific Antibody Targeting Soluble SCF And TSLP Achieves Profound Mast Cell Depletion With Favorable Safety Profile

Celldex Therapeutics, Inc.

Celldex Therapeutics, Inc.

CLDX

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  • CDX-622 is a novel, bispecific antibody combining mast cell depletion and TSLP inhibition, two independent pathways contributing to multiple I&I diseases
  • CDX-622 targets the soluble form of stem cell factor (SCF), depleting mast cells without measurably impacting other KIT functions
  • Rapid, profound, dose-dependent, and durable reductions in serum tryptase observed
  • Well-tolerated at all dose levels
  • First company to demonstrate that neutralizing soluble SCF can selectively inhibit KIT signaling in mast cells