Venetoclax and Azacitidine Compared to Induction Chemotherapy for Newly Diagnosed Patients with Acute Myeloid Leukemia.
2021
Abstract Venetoclax (ven) + azacitidine (aza) is the standard of care for newly-diagnosed acute myeloid leukemia (AML) patients who are not candidates for intensive chemotherapy (IC). Some patients who are IC candidates instead receive ven/aza. We retrospectively analyzed newly-diagnosed AML patients who received ven/aza (N=143) or IC (N=149), to compare outcomes and seek variables that could predict response to one or the other therapy, and ascertain whether treatment recommendations can be refined. The response rate for ven/aza was 76.9% and 70.5% for IC. The median overall survival (OS) for IC was 884 days compared to 483 for ven/aza (p=0.0020). A propensity-matched cohort was utilized to compare outcomes in the setting of equivalent baseline variables, and when matched for age, biological risk, and transplantation, the median OS was 705 days for IC and not reached for ven/aza (p=0.0667). Variables that favored response to ven/aza over IC included older age, secondary AML and RUNX1 mutations. AML M5 favored response to IC over ven/aza. In the propensity-matched cohort analyzing OS, older age, adverse risk and RUNX1 mutations favored ven/aza over IC, while intermediate risk favored IC over ven/aza. In conclusion, IC patients have improved OS compared to ven/aza. However, in a propensity-matched cohort of patients with equivalent baseline factors, there was a trend toward a favorable OS for ven/aza. Specific variables, such as reported here for the first time RUNX1 mutations, can be identified that favor ven/aza or IC, helping to guide treatment decisions for patients who may be eligible candidates for either therapy.
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