Breaking down frailty: Assessing vulnerability in acute myeloid leukemia

Acute myeloid leukemia (AML) is a disease primarily affecting older adults. However, not all patients at older ages are suitable for curative treatment with intensive chemotherapy due to "frailty" demonstrated by their functional status, physiologic reserve, and vulnerability to disease and treatment morbidity. Lack of consensus exists on how to select older, less fit patients most appropriate for standard intensive chemotherapy (IC), hypomethylating agents (HMA) with venetoclax, or less intensive regimens. A total of 37 studies of frailty assessments and composite indices in AML show heterogeneous results regarding the ability of frailty and Comprehensive Geriatric Assessment (CGA) measures to predict treatment outcomes. CGA, Geriatric 8 (G8) risk score, and hematopoietic cell transplant comorbidity index (HCT-CI) show association with prognosis, and should be validated in larger therapeutic trials. Studies of biomarkers, like albumin and C-reactive protein, and patient-reported outcomes demonstrate the potential to enhance information gained from rigorous geriatric assessment.