한빛사논문
Su Yeon Kim 1,15, Seongmun Jeong 1,15, Wookjae Lee 1, Yujin Jeon 1, Yong-Jin Kim 1, Seowoo Park 1, Dongin Lee 2, Dayoung Go 1, Sang-Hyun Song 3, Sanghoo Lee 4, Hyun Goo Woo 5, Jung-Ki Yoon 6, Young Sik Park 7, Young Tae Kim 3,8, Se-Hoon Lee 9,10, Kwang Hyun Kim 11, Yoojoo Lim 1, Jin-Soo Kim 1,12, Hwang-Phill Kim 1, Duhee Bang 2,* and Tae-You Kim 1,3,13,14,*
1IMBdx Inc., Seoul 08506, Republic of Korea.
2Department of Chemistry, Yonsei University, Seoul 03722, Republic of Korea.
3Cancer Research Institute, Seoul National University, Seoul 03080, Republic of Korea.
4Seoul Clinical Laboratories Healthcare Inc., Yongin-si, Gyenggi-do 16954, Republic of Korea.
5Department of Physiology, Ajou University School of Medicine, Suwon 16499, Republic of Korea.
6Division of Pulmonary and Critical Care Medicine, Department of Medicine, Stanford University, Stanford, CA, USA.
7Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Seoul National University Hospital, Seoul 03080, Republic of Korea.
8Department of Thoracic and Cardiovascular Surgery, Seoul National University Hospital, Seoul 03080, Republic of Korea.
9Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 06351, Republic of Korea.
10Department of Health Sciences and Technology, Samsung Advanced Institute of Health Sciences and Technology, Sungkyunkwan University, Seoul 03063, Republic of Korea.
11Department of Urology, Ewha Womans University Seoul Hospital, Seoul 07804, Republic of Korea.
12Department of Internal Medicine, Seoul Metropolitan Government Seoul National University Boramae Medical Center, Seoul 07061, Republic of Korea.
13Department of Internal Medicine, Seoul National University Hospital, Seoul 03080, Republic of Korea.
14Department of Molecular Medicine and Biopharmaceutical Sciences, Graduate School of Convergence Science and Technology, Seoul National University, Seoul 08826, Republic of Korea.
15These authors contributed equally: Su Yeon Kim, Seongmun Jeong.
*Corresponding authors: correspondence to Duhee Bang or Tae-You Kim
Abstract
Cell-free DNA (cfDNA) sequencing has demonstrated great potential for early cancer detection. However, most large-scale studies have focused only on either targeted methylation sites or whole-genome sequencing, limiting comprehensive analysis that integrates both epigenetic and genetic signatures. In this study, we present a platform that enables simultaneous analysis of whole-genome methylation, copy number, and fragmentomic patterns of cfDNA in a single assay. Using a total of 950 plasma (361 healthy and 589 cancer) and 240 tissue samples, we demonstrate that a multifeature cancer signature ensemble (CSE) classifier integrating all features outperforms single-feature classifiers. At 95.2% specificity, the cancer detection sensitivity with methylation, copy number, and fragmentomic models was 77.2%, 61.4%, and 60.5%, respectively, but sensitivity was significantly increased to 88.9% with the CSE classifier (p value < 0.0001). For tissue of origin, the CSE classifier enhanced the accuracy beyond the methylation classifier, from 74.3% to 76.4%. Overall, this work proves the utility of a signature ensemble integrating epigenetic and genetic information for accurate cancer detection.
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