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Cell-free and extrachromosomal DNA profiling of small cell lung cancer
Behrouzi, Roya Clipson, Alexandra Simpson, Kathryn L Blackhall, Fiona Rothwell, Dominic G Mouliere, Florent
Behrouzi, Roya
Clipson, Alexandra
Simpson, Kathryn L
Blackhall, Fiona
Rothwell, Dominic G
Mouliere, Florent
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Abstract
Small cell lung cancer (SCLC) is highly aggressive with poor prognosis. Despite a relative prevalence of circulating tumour DNA (ctDNA) in SCLC, liquid biopsies are not currently implemented, unlike non-SCLC where cell-free DNA (cfDNA) mutation profiling in the blood has utility for guiding targeted therapies and assessing minimal residual disease. cfDNA methylation profiling is highly sensitive for SCLC detection and holds promise for disease monitoring and molecular subtyping; cfDNA fragmentation profiling has also demonstrated clinical potential. Extrachromosomal DNA (ecDNA), that is often observed in SCLC, promotes tumour heterogeneity and chemotherapy resistance and can be detected in blood. We discuss how these cfDNA profiling modalities can be harnessed to expand the clinical applications of liquid biopsy in SCLC.
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Date
2024
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Behrouzi R, Clipson A, Simpson KL, Blackhall F, Rothwell DG, Dive C, et al. Cell-free and extrachromosomal DNA profiling of small cell lung cancer. Trends in molecular medicine. 2024 Sep 3. PubMed PMID: 39232927. Epub 2024/09/05. eng.