Incyte Announces New Positive Data at EHA 2026 Showed INCA033989 Achieved Rapid, Robust and Sustained Clinical and Molecular Responses and Was Well Tolerated in Patients with Myelofibrosis and Essential Thrombocythemia

Incyte Announces New Positive Data at EHA 2026 Showed INCA033989 Achieved Rapid, Robust and Sustained Clinical and Molecular Responses and Was Well Tolerated in Patients with Myelofibrosis and Essential Thrombocythemia

Incyte (Nasdaq:INCY) today announced updated clinical data from two Phase 1 studies evaluating the safety, tolerability and efficacy of INCA033989, a first-in-class mutant calreticulin (mutCALR)-targeted monoclonal antibody, in patients with mutCALR-expressing myeloproliferative neoplasms (MPNs). INCA033989 demonstrated rapid, clinically meaningful responses and consistent molecular activity across both myelofibrosis (MF) and essential thrombocythemia (ET), with convergent evidence supporting the potential for disease modification.

These findings are being presented in oral and poster presentations at the European Hematology Association (EHA) 2026 Congress in Stockholm, Sweden (Session: Myeloproliferative neoplasms – Clinical, Presentation numbers: S216, PS1983, PF884).

“The data presented at EHA 2026 demonstrate clinically meaningful and consistent responses with INCA033989 across both myelofibrosis and essential thrombocythemia,” said Pablo J. Cagnoni, M.D., President of Incyte and Global Head of Research and Development. “What distinguishes INCA033989 is its potential to deliver disease control while targeting the biology that drives it. We remain on track to initiate our pivotal ET study by mid-2026 and are actively engaging regulators on a pivotal MF program.”