Cancer Research and Treatment

Original Article

Hematologic malignancy

Feasibility of Circulating Tumor DNA Analysis in Patients with Follicular Lymphoma: Sang Eun Yoon, Seung-Ho Shin, Dae Keun Nam, Junhun Cho, Won Seog Kim, Seok Jin Kim; Cancer Res Treat. 2024;56(3):920-935. Published online January 16, 2024; DOI: https://doi.org/10.4143/crt.2023.869

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Purpose
The feasibility of sequencing circulating tumor DNA (ctDNA) in plasma as a biomarker to predict early relapse or poor prognosis in patients with follicular lymphoma (FL) receiving systemic immunochemotherapy is not clear.
Materials and Methods
We sequenced DNA from cell-free plasma that was serially obtained from newly diagnosed FL patients undergoing systemic immunochemotherapy. The mutation profiles of ctDNA at the time of diagnosis and at response evaluation and relapse and/or progression were compared with clinical course and treatment outcomes.
Results
Forty samples from patients receiving rituximab-containing immunochemotherapy were analyzed. Baseline sequencing detected mutations in all cases, with the major detected mutations being KMT2C (50%), CREBBP (45%), and KMT2D (45%). The concentration of ctDNA and tumor mutation burden showed a significant association with survival outcome. In particular, the presence of mutations in CREBBP and TP53 showed poor prognosis compared with patients without them. Longitudinal analysis of ctDNA using serially collected plasma samples showed an association between persistence or reappearance of ctDNA mutations and disease relapse or progression.
Conclusion
Analysis of ctDNA mutations in plasma at diagnosis might help predict outcome of disease, while analysis during follow-up may help to monitor disease status of patients with advanced FL. However, the feasibility of ctDNA measurement must be improved in order for it to become an appropriate and clinically relevant test in FL patients.

Citations

Citations to this article as recorded by

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