BRISBANE, CA, USA I March 15, 2018 I Humanigen, Inc. (OTCQB:HGEN), a biopharmaceutical company pursuing cutting-edge science to develop its proprietary monoclonal antibodies for immunotherapy and oncology treatments, today announced it has completed patient enrollment in the ongoing phase 1 trial of lenzilumab in patients with previously treated chronic myelomonocytic leukemia (CMML). Lenzilumab is a first-in-class Humaneered® recombinant monoclonal antibody that targets and is an antagonist of soluble granulocyte-macrophage colony-stimulating factor (GM-CSF).

“Full enrollment of the CMML trial shows our unflinching commitment to execution on the important work to progress our assets, strengthen our company and to drive value for patients and all our stakeholders,” said Cameron Durrant, M.D., chairman and chief executive officer of Humanigen. “We look forward to more milestones quickly ahead as we compile an interim report on the safety of lenzilumab in CMML and we initiate a planned phase 1b/2 study to assess lenzilumab’s potential to prevent and/or reduce neurotoxicity related to CAR-T cancer therapy.”

The phase 1, multi-center, open-label, dose-escalation trial is designed to evaluate the maximum tolerated dose, safety and tolerability of single-agent lenzilumab in 12 patients with CMML who are relapsed, refractory to, or intolerant to standard-of-care treatments. The trial will also provide additional data on pharmacokinetics and pharmacodynamics. For more information on the trial, visit www.clinicaltrials.gov.

About Lenzilumab

Lenzilumab is a first-in-class, novel Humaneered® recombinant monoclonal antibody designed to target and neutralize circulating granulocyte-macrophage colony-stimulating factor (GM-CSF), a central actor in leukocyte differentiation, autoimmunity and inflammation. There is also extensive evidence linking GM-CSF expression to serious and potentially life-threatening side-effects in chimeric antigen receptor T-cell (CAR-T) therapy, such as neurotoxicity and Cytokine Release Syndrome (CRS).  Humanigen is working with leading CAR-T experts to develop lenzilumab as a potential prophylaxis and treatment to minimize neurotoxicity associated with CAR-T cancer therapy. In addition, lenzilumab is currently being evaluated as a potential treatment for rare leukemias with a phase 1 trial (NCT02546284) in patients with chronic myelomonocytic leukemia (CMML) with additional potential in juvenile myelomonocytic leukemia (JMML), a rare pediatric cancer. In previous clinical trials, lenzilumab has shown to be safe and well-tolerated in more than 100 patients, including those with rheumatoid arthritis, asthma and healthy volunteers. It is a potent inhibitor of GM-CSF in vivo.

About Humanigen 

Humanigen, Inc. is a biopharmaceutical company pursuing cutting-edge science to develop its proprietary monoclonal antibodies for immunotherapy and oncology treatments. Derived from the company’s Humaneered® platform, lenzilumab and ifabotuzumab are lead compounds in the portfolio of monoclonal antibodies with first-in-class mechanisms. Lenzilumab, which targets GM-CSF, is in development as a potential medicine to make CAR-T therapy safer and more effective, as well as a potential treatment for rare hematologic cancers such as chronic myelomonocytic leukemia (CMML) and juvenile myelomonocytic leukemia (JMML). Ifabotuzumab, which targets Ephrin type-A receptor 3 (EphA3), is being explored as a potential treatment for glioblastoma multiforme (GBM) and other deadly cancers, as well as a platform for creation of CAR-T and bispecific antibodies. For more information, visit www.humanigen.com.

SOURCE: Humanigen