Report of the Korean Association of Lung Cancer Registry (KALC-R), 2014.
PURPOSE
The aim of this study was to investigate epidemiology, clinical characteristics and sex differences of patients with lung cancer using nationwide registry in Korea.


Materials and Methods
The Korean Association for Lung Cancer developed a registry in cooperation with the Korean Central Cancer Registry, and surveyed about 10% of lung cancer cases. For this first survey of cases diagnosed in 2014, cases were selected through a systematic sampling method.


RESULTS
Total 2,621 lung cancer patients were surveyed, and the median patient age was 70 years. During the study period, adenocarcinoma was the most frequent histologic type, the proportion of female patients was 28.4%, and women had a better prognosis (median survival, not reached vs. 13 months; p<0.001) than did men for non-small cell lung cancer. The proportion of never-smokers was 36.4%, and never-smoking was more prevalent in women than in men (87.5 vs. 16.0%, p<0.001). Epidermal growth factor receptor (EGFR) mutations were found in 36.8% of stage IV adenocarcinoma patients, and higher in female compared to male patients (51.2 vs. 26.6%, p<0.001). In addition, patients with EGFR mutation showed better survival (median survival, 18 vs. 8 months; p<0.001) than patients without EGFR mutation in these patients.


CONCLUSION
This is the first survey to gather unbiased nationwide lung cancer statistics in Korea. More than one-third of lung cancer patients had no smoking history. Female had a high proportion of non-smoker, more adenocarcinoma with EGFR mutation and generally better prognosis than male.
['Choi|Chang-Min|CM|', 'Kim|Ho Cheol|HC|', 'Jung|Chi Young|CY|', 'Cho|Deog Gon|DG|', 'Jeon|Jae Hyun|JH|', 'Lee|Jeong Eun|JE|', 'Ahn|Jin Seok|JS|', 'Kim|Seung Joon|SJ|', 'Kim|Yeongdae|Y|', 'Choi|Yoo-Duk|YD|', 'Suh|Yang-Gun|YG|', 'Kim|Jung-Eun|JE|', 'Lee|Boram|B|', 'Won|Young-Joo|YJ|', 'Kim|Young-Chul|YC|']
D000368:Aged D002289:Carcinoma, Non-Small-Cell Lung D066246:ErbB Receptors D006801:Humans D008175:Lung Neoplasms D008297:Male D008875:Middle Aged D009154:Mutation D015995:Prevalence D011379:Prognosis D012042:Registries D056910:Republic of Korea D012727:Sex Characteristics D012907:Smoking D016019:Survival Analysis
Epidemiology Korea Never-smokers Epidermal growth factor receptor Lung neoplasms