Incyte’s Novel Mutant CALR Antibody Unveiled at ASH 2022 Plenary Scientific Session

On December 11, 2022 Incyte (Nasdaq:INCY) reported that new research detailing the development and mechanism of action of INCA033989, an Incyte-discovered, investigational novel anti-mutant calreticulin (CALR)-targeted monoclonal antibody (Press release, Incyte, DEC 11, 2022, View Source [SID1234625053]). Pre-clinical data indicate that INCA033989 can alter disease course by reducing mutant CALR allele burden and thus may be an efficacious and safe treatment in patients with myelofibrosis (MF) and essential thrombocythemia (ET). This research was featured in the Plenary Scientific Session (Abstract #6. Session: Hematology Disease Topics & Pathways: Research, Diseases, Therapies, Myeloid Malignancies) at the 64th American Society of Hematology (ASH) (Free ASH Whitepaper) Annual Meeting, held December 10-13, 2022, in New Orleans and virtually1.

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"Diseases like myelofibrosis and essential thrombocythemia are often difficult to understand and treat, and unique approaches are necessary to develop effective and safe therapies"

"As a pioneer in the field of myeloproliferative neoplasms (MPNs), having brought the first FDA-approved treatment to patients, we are excited to have the opportunity to share details of our latest research," said Dash Dhanak, Ph.D., Executive Vice President and Chief Scientific Officer, Incyte. "We continue to apply our deep understanding of the complex biology of MPNs to expand treatment options for patients and the work on INCA033989 presented today reflects our progress toward this goal. We look forward to continuing to advance the development of this potential new treatment and to initiating clinical trials for INCA033989 next year."

CALR mutations are responsible for disease development in approximately 25-35%2,3 of patients with MF and ET – two common types of MPNs. INCA033989 binds with high affinity to mutant CALR and inhibits oncogenesis, the process of cells becoming cancerous, in cells expressing this oncoprotein. As described in our presentation, INCA033989 potently antagonizes CALR oncogenic function, resulting in selective inhibition of JAK/STAT signaling only in CALR-mutated cells with no effect on normal, non-oncogenic cells. This selectivity of action with INCA033989 results in the specific killing of tumor cells harboring the mutation and is suggestive of the potential to alter the course of disease in patients with CALR-mutant MF and ET.

"Diseases like myelofibrosis and essential thrombocythemia are often difficult to understand and treat, and unique approaches are necessary to develop effective and safe therapies," said Srdan Verstovsek, M.D., Ph.D., Professor of Medicine, Department of Leukemia, University of Texas MD Anderson Cancer Center. "As a leader in the field, Incyte is uniquely positioned to develop novel medicines for these rare blood cancers, and this research provides strong rationale for the continued investigation and clinical advancement of INCA033989 – a novel treatment approach that targets CALR mutations."

More information regarding the congress and the more than 50 abstracts from Incyte’s oncology portfolio being featured at the meeting is available on the ASH (Free ASH Whitepaper) website: View Source

About Myeloproliferative Neoplasms

Myeloproliferative neoplasms (MPNs) are a closely related group of blood cancers in which the bone marrow functions abnormally. The bone marrow is where the body’s blood cells are made. MPNs are progressive blood cancers that can strike anyone at any age, but they are more common in older adults. Estimates of the prevalence of MPNs vary, but analysis of claims data suggests there may be as many as 200,000 people in the U.S. living with the most prevalent MPNs: myelofibrosis, polycythemia vera or essential thrombocythemia4.

About LIMBER

Incyte is a leader in the discovery and development of therapies for patients with myeloproliferative neoplasms (MPNs) and graft-versus-host disease (GVHD). The Leadership In MPNs and GVHD BEyond Ruxolitinib (LIMBER) program is designed to evaluate multiple monotherapy and combination strategies to improve and expand treatments for patients with MPNs and GVHD. The program currently has three key areas of focus: development of a new, once-daily formulation of ruxolitinib; ruxolitinib-based combinations with new targets such as PI3Kδ, BET and ALK2; and new therapeutic options such as mutant CALR.