TY - JOUR
T1 - cfDNA methylome profiling for detection and subtyping of small cell lung cancers.
AU - Chemi, Francesca
AU - Pearce, Simon
AU - Clipson, Alexandra
AU - Hill, Steven
AU - Conway, Alicia-Marie
AU - Richardson, Sophie Alice
AU - Kamieniecka, K
AU - Caeser, R
AU - White, Daniel
AU - Mohan, S
AU - Foy, V
AU - Simpson, Kathryn
AU - Galvin, M
AU - Frese, KK
AU - Priest, Lynsey
AU - Egger, J
AU - Kerr, Alastair
AU - Massion, PP
AU - Poirier, John
AU - Brady, Gerard
AU - Blackhall, F
AU - Rothwell, Dominic
AU - Rudin, Charles
AU - Dive, Caroline
N1 - Publisher Copyright:
© 2022, The Author(s).
PY - 2022/10/1
Y1 - 2022/10/1
N2 - Small cell lung cancer (SCLC) is characterized by morphologic, epigenetic and transcriptomic heterogeneity. Subtypes based upon predominant transcription factor expression have been defined that, in mouse models and cell lines, exhibit potential differential therapeutic vulnerabilities, with epigenetically distinct SCLC subtypes also described. The clinical relevance of these subtypes is unclear, due in part to challenges in obtaining tumor biopsies for reliable profiling. Here we describe a robust workflow for genome-wide DNA methylation profiling applied to both patient-derived models and to patients' circulating cell-free DNA (cfDNA). Tumor-specific methylation patterns were readily detected in cfDNA samples from patients with SCLC and were correlated with survival outcomes. cfDNA methylation also discriminated between the transcription factor SCLC subtypes, a precedent for a liquid biopsy cfDNA-methylation approach to molecularly subtype SCLC. Our data reveal the potential clinical utility of cfDNA methylation profiling as a universally applicable liquid biopsy approach for the sensitive detection, monitoring and molecular subtyping of patients with SCLC.
AB - Small cell lung cancer (SCLC) is characterized by morphologic, epigenetic and transcriptomic heterogeneity. Subtypes based upon predominant transcription factor expression have been defined that, in mouse models and cell lines, exhibit potential differential therapeutic vulnerabilities, with epigenetically distinct SCLC subtypes also described. The clinical relevance of these subtypes is unclear, due in part to challenges in obtaining tumor biopsies for reliable profiling. Here we describe a robust workflow for genome-wide DNA methylation profiling applied to both patient-derived models and to patients' circulating cell-free DNA (cfDNA). Tumor-specific methylation patterns were readily detected in cfDNA samples from patients with SCLC and were correlated with survival outcomes. cfDNA methylation also discriminated between the transcription factor SCLC subtypes, a precedent for a liquid biopsy cfDNA-methylation approach to molecularly subtype SCLC. Our data reveal the potential clinical utility of cfDNA methylation profiling as a universally applicable liquid biopsy approach for the sensitive detection, monitoring and molecular subtyping of patients with SCLC.
KW - Animals
KW - Cell-Free Nucleic Acids/genetics
KW - DNA Methylation/genetics
KW - Epigenome/genetics
KW - Lung Neoplasms/diagnosis
KW - Mice
KW - Small Cell Lung Carcinoma/diagnosis
KW - Transcription Factors/genetics
UR - http://www.scopus.com/inward/record.url?scp=85135688701&partnerID=8YFLogxK
UR - https://www.mendeley.com/catalogue/e42bf9d7-1ab0-3de9-9e98-ea83310d3909/
U2 - 10.1038/s43018-022-00415-9
DO - 10.1038/s43018-022-00415-9
M3 - Article
C2 - 35941262
SN - 2662-1347
VL - 3
SP - 1260
EP - 1270
JO - Nature Cancer
JF - Nature Cancer
IS - 10
ER -