Moleculin Biotech, Inc., (Nasdaq: MBRX) ("Moleculin" or the "Company"), today announced positive preliminary unblinded efficacy results from the first 45 patients enrolled in Part A of the Company's pivotal Phase 2/3 MIRACLE trial, analyzed on a full intent-to-treat basis with no patient exclusions. Both Annamycin treatment arms demonstrated favorable efficacy trends compared with the control arm in patients with relapsed or refractory acute myeloid leukemia (R/R AML).

The interim analysis demonstrated a clear efficacy advantage for both Annamycin treatment arms, 190 mg/m² plus HiDAC and 230 mg/m² plus HiDAC, over the HiDAC control arm. CR reached 43% and 36% in the respective Annamycin cohorts, compared with 12% for control, while CRc reached 50% and 57%, respectively, versus 29% for the control arm. The n=45 population contained 75.6% over 60 years of age, 55.6% 7+3 and 31.1% venetoclax regimens for first line (1L) therapies.

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