%0 Journal Article %T Progastrin-releasing peptide as a diagnostic and therapeutic biomarker of small cell lung cancer %A Cheol-Kyu Park %A Ha-Young Park %A Hong-Joon Shin %A Hyung-Joo Oh %A In-Jae Oh %A Jung-Hwan Lim %A Ki-Hyun Kim %A Myung-Geun Shin %A Soo-Hyun Kim %A Sung-Chul Lim %A Yong-Soo Kwon %A Young-Chul Kim %A Yu-Il Kim %J SCIE-indexed Journal %D 2016 %R 10.21037/jtd.2016.08.72 %X Lung cancer is the most common fatal cancer and its prevalence is increasing in Korea (1-3). Tumor markers have been studied in patients with lung cancer as tools to differentiate lung cancer subtypes and improve diagnosis and treatment selection (4,5). Neuron-specific enolase (NSE) and progastrin-releasing peptide (proGRP) are the most beneficial tumor markers in neuroendocrine tumors, such as small cell lung cancer (SCLC) (6,7). Although NSE was a historically recommended tumor marker for SCLC (8). NSE also stains up to 80% of non-small cell lung cancer (NSCLC) in tissue examinations and is elevated in the serum of 20¨C30% patients with NSCLC (9) %U http://jtd.amegroups.com/article/view/9104/html