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MAIA Biotechnology, Inc. (NYSE:MAIA) ("MAIA", the "Company"), a clinical-stage biopharmaceutical company focused on developing targeted immunotherapies for cancer, today announced a new partial response (PR) was identified in a patient after 20 months of treatment in its Phase 2 THIO-101 clinical trial evaluating ateganosine (THIO), sequenced with Regeneron's immune checkpoint inhibitor (CPI) cemiplimab (Libtayo®) in patients with advanced non-small cell lung cancer (NSCLC) who are resistant to immune therapy and chemotherapy. A partial response is defined as a decrease in tumor size of at least 30%.
THIO-101 third line (3L) data cutoff from May 15, 2025, showed median overall survival (OS) of 17.8 months for the 22 NSCLC patients who received at least one dose of ateganosine in parts A and B of the trial. At the data cutoff, the patient with the longest survival in the trial had completed 32 cycles of therapy and had 24.3 months survival. Studies of standard-of-care (SOC) chemotherapy treatments for NSCLC in a similar setting have shown OS of 5 to 6 months.1
MAIA has announced the trial design for an expansion of its THIO-101 pivotal Phase 2 trial in NSCLC to assess overall response rates (ORR) in advanced NSCLC patients receiving third line (3L) therapy who were resistant to previous CPI treatment and chemotherapy.
Posted In: MAIA
