ANB033 — Eosinophilic Esophagitis

Phase 1b cohort in eosinophilic esophagitis to initiate in Q1 2026

Similar to CeD, ANB033 targets multiple drivers of EoE biology addressing both dupilumab sensitive and insensitive pathways

Adapted from Discepolo et. al. Gastroenterology. 2024; 167:90-103.

ANB033 prevents eosinophilia by targeting upstream inflammation

Model of eosinophilic inflammation: Balb/c mice were challenged intranasally with Aspergillus fumigatus TIW for 3 weeks. The treatment regimen includes a saline, isotype control, and ANB033 surrogate antibody (anti-mouse CD122 antibody with similar binding epitope and affinity to ANB033, administered at 10 mg/kg BIW for 3 weeks. Tissues were stained with H&E for histopathology assessment.

ANB033 reduces CD4+ T cell and ILC2 derived Th2 cytokines, proven drivers of EoE pathology

Top Panel: Human healthy PBMC were activated by anti-CD3/CD28 for 3 days; n=4 donors shown.
Bottom Panel: Purified human whole blood-derived ILC2 maintained in IL-33 were stimulated with IL-2 for 3 days; 1 of 6 similar representative donors shown.