AUTHOR=George Noreen Grace , Rishi Bhavika , Singh Amitabh , Vishmaya Sree , Kumar Rakesh , Kushwaha Neetu , Kaur Manpreet , Bhardwaj Reena , Jain Ankur , Jain Aditi , Chaudhry Sumita , Misra Aroonima
TITLE=Early prognosis prediction in acute myeloid and acute lymphoid leukemia patients using cell-free DNA concentration ratios
JOURNAL=Frontiers in Molecular Biosciences
VOLUME=10
YEAR=2024
URL=https://www.frontiersin.org/journals/molecular-biosciences/articles/10.3389/fmolb.2023.1333943
DOI=10.3389/fmolb.2023.1333943
ISSN=2296-889X
ABSTRACT=Background: Cell-free DNA (cfDNA) is a promising biomarker for disease prediction in many cancers, including acute leukemia (acute myeloid leukemia [AML] and acute lymphoblastic leukemia [ALL]). This study investigated the role of cfDNA in predicting relapse or unfavorable outcomes in acute leukemia patients upon initial diagnosis.
Methods: Paired peripheral blood samples of 25 patients with ALL and AML were compared at baseline and induction/follow-up and clinically correlated with clinicopathological and outcome variables according to the risk category. cfDNA was isolated using commercial cfDNA extraction kits. The probability of poor outcomes in high-risk groups and a cut-off value for risk stratification minimal residual disease (MRD) positivity and outcome prediction were derived.
Results: Twenty-five patients diagnosed with AML and ALL were risk-stratified based on NCI risk stratification, and of these 25 patients, 4 patients were of standard risk (SR) and 1 patient was of intermediate risk (IR), while a majority of patients (80%) were of high risk (HR). Of these, four HR patients passed away. The ratio of cfDNA reduction at baseline and the end of induction was a strong predictor of poor outcomes in high-risk patients, regardless of the MRD status. A cfDNA ratio score of 2.6 or higher at diagnosis/remission predicted poor outcomes, with higher accuracy than conventional MRD detection by flow cytometry.
Conclusion: A higher cfDNA ratio at diagnosis/remission or at baseline predicts poor outcomes in acute leukemia patients. This pilot study suggests that cfDNA ratio scoring may be a useful tool for predicting prognosis in acute leukemia patients, regardless of the MRD status.