Marker Therapeutics Announces FDA Lifted Partial Clinical Hold on Phase 2 AML Clinical Trial

On January 5, 2021 Marker Therapeutics, Inc. (Nasdaq:MRKR), a clinical-stage immuno-oncology company specializing in the development of next-generation T cell-based immunotherapies for the treatment of hematological malignancies and solid tumor indications, reported that the U.S. Food and Drug Administration (FDA) lifted the partial clinical hold on the Company’s Phase 2 trial investigating the safety and efficacy of MT-401, Marker’s lead multi-tumor-associated antigen (MultiTAA)-specific T cell product candidate for the treatment of post-transplant acute myeloid leukemia (AML) (Press release, TapImmune, JAN 5, 2021, View Source [SID1234573490]).

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"We are pleased to move forward with our Phase 2 AML trial of MT-401, which we believe may provide a safe and effective treatment option for patients with post-transplant AML over the standard of care," said Mythili Koneru, M.D., Ph.D., Chief Medical Officer of Marker Therapeutics. "During the partial clinical hold, we continued to open clinical centers to enroll patients in the first half of the safety lead-in of our Phase 2 trial. With the FDA’s decision, we will now be able to seamlessly enroll patients in the second half of the safety lead-in, as well as the remainder of the trial. We look forward to working with our clinical sites to continue enrolling patients."

The multicenter Phase 2 AML study is evaluating clinical efficacy of MT-401 in patients with AML in both the adjuvant and active disease setting, following an allogeneic stem-cell transplant. In the adjuvant setting, approximately 120 patients will be randomized 1:1 to either MT-401 at 90 days post-transplant versus standard-of-care observation, while about 40 patients with active disease will receive MT-401 as part of the single-arm group. The trial also includes a safety lead-in expected to enroll six patients.

The primary objectives of the trial are to evaluate relapse-free survival in the adjuvant group and determine the complete remission rate and duration of complete remission in active disease patients. Additional objectives include, for the adjuvant group, overall survival and graft-versus-host disease relapse-free survival while additional objectives for the active disease group include overall response rate, duration of response, progression-free survival and overall survival.

In April 2020, the FDA granted Orphan Drug designation to MT-401 for the treatment of patients with AML following allogeneic stem cell transplant.