WILMINGTON, Del.–(BUSINESS WIRE)–Jun. 15, 2025– Incyte (Nasdaq:INCY) today announced the first clinical data from two studies evaluating the safety, tolerability and efficacy of INCA033989, a novel, first in class, Incyte-discovered, targeted monoclonal antibody in patients with mutant calreticulin (mutCALR)-expressing myeloproliferative neoplasms (MPNs). These data – featured today in the Late-Breaking Oral Session (#LB4002) at the European Hematology Association 2025 (EHA2025) Congress in Milan, Italy – focus on the dose escalation portion of the studies in patients with high risk essential thrombocythemia (ET) who are resistant/intolerant to prior cytoreductive therapy.
The studies evaluated the safety and efficacy of INCA033989 in patients with ET as measured by hematologic response and reduction in mutCALR variant allele frequency (VAF).