1 Supporting information Early-Stage Lung Cancer Diagnosis by Deep Learning- Based Spectroscopic Analysis of Circulating Exosomes Hyunku Shin 1 , Seunghyun Oh 2 , Soonwoo Hong 1 , Minsung Kang 3 , Daehyeon Kang 2 , Yong-gu Ji 4 , Byeong Hyeon Choi 6,7 , Ka-Won Kang 5 , Hyesun Jeong 8 , Yong Park 5 , Sunghoi Hong 8 , Hyun Koo Kim 6,7, *, and Yeonho Choi 1,2,3,4, * 1 Department of Bio-convergence Engineering, Korea University, Seoul 02841, Republic of Korea. 2 School of Biomedical Engineering, Korea University, Seoul 02841, Republic of Korea. 3 Department of Bioengineering, Korea University, Seoul 02841, Republic of Korea. 4 Exopert corporation, Seoul, 02841, Republic of Korea. 5 Division of Hematology-Oncology, Department of Internal Medicine, Korea University College of Medicine, Seoul 02841, Republic of Korea. 6 Department of Biomedical Sciences, College of Medicine, Korea University, Seoul 02841, Republic of Korea. 7 Department of Thoracic and Cardiovascular Surgery, College of Medicine, Korea University Guro Hospital, Seoul 08308, Republic of Korea. 8 School of Biosystems and Biomedical Sciences, Korea University, Seoul 02841, Republic of Korea. *Corresponding authors: kimhyunkoo@korea.ac.kr, yeonhochoi@korea.ac.kr