TY - JOUR
T1 - Gene expression-based, individualized outcome prediction for surgically treated lung cancer patients
AU - Tomida, Shuta
AU - Koshikawa, Katsumi
AU - Yatabe, Yasushi
AU - Harano, Tomoko
AU - Ogura, Nobuhiko
AU - Mitsudomi, Tetsuya
AU - Some, Masato
AU - Yanagisawa, Kiyoshi
AU - Takahashi, Toshitada
AU - Osada, Hirotaka
AU - Takahashi, Takashi
N1 - Funding Information:
We thank Curtis C Harris and Kiyoshi Yanagisawa for their valuable discussions and suggestions. This work was supported in part by a Grant-in-Aid for Scientific Research on Priority Areas from the Ministry of Education, Culture, Sports, Science and Technology of Japan and a Grant-in-Aid for the Second-Term Comprehensive 10-Year Strategy for Cancer Control from the Ministry of Health and Welfare, Japan.
PY - 2004/7/8
Y1 - 2004/7/8
N2 - Individualized outcome prediction classifiers were successfully constructed through expression profiling of a total of 8644 genes in 50 non-small-cell lung cancer (NSCLC) cases, which had been consecutively operated on within a defined short period of time and followed up for more than 5 years. The resultant classifier of NSCLCs yielded 82% accuracy for forecasting survival or death 5 years after surgery of a given patient. In addition, since two major histologic classes may differ in terms of outcome-related expression signatures, histologic-type-specific outcome classifiers were also constructed. The resultant highly predictive classifiers, designed specifically for nonsquamous cell carcinomas, showed a prediction accuracy of more than 90% independent of disease stage. In addition to the presence of heterogeneities in adenocarcinomas, our unsupervised hierarchical clustering analysis revealed for the first time the existence of clinicopathologically relevant subclasses of squamous cell carcinomas with marked differences in their invasive growth and prognosis. This finding clearly suggests that NSCLCs comprise distinct subclasses with considerable heterogeneities even within one histologic type. Overall, these findings should advance not only our understanding of the biology of lung cancer but also our ability to individualize postoperative therapies based on the predicted outcome.
AB - Individualized outcome prediction classifiers were successfully constructed through expression profiling of a total of 8644 genes in 50 non-small-cell lung cancer (NSCLC) cases, which had been consecutively operated on within a defined short period of time and followed up for more than 5 years. The resultant classifier of NSCLCs yielded 82% accuracy for forecasting survival or death 5 years after surgery of a given patient. In addition, since two major histologic classes may differ in terms of outcome-related expression signatures, histologic-type-specific outcome classifiers were also constructed. The resultant highly predictive classifiers, designed specifically for nonsquamous cell carcinomas, showed a prediction accuracy of more than 90% independent of disease stage. In addition to the presence of heterogeneities in adenocarcinomas, our unsupervised hierarchical clustering analysis revealed for the first time the existence of clinicopathologically relevant subclasses of squamous cell carcinomas with marked differences in their invasive growth and prognosis. This finding clearly suggests that NSCLCs comprise distinct subclasses with considerable heterogeneities even within one histologic type. Overall, these findings should advance not only our understanding of the biology of lung cancer but also our ability to individualize postoperative therapies based on the predicted outcome.
KW - Gene expression profile
KW - Lung cancer
KW - Microarray
KW - Prognosis
UR - http://www.scopus.com/inward/record.url?scp=3142683871&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=3142683871&partnerID=8YFLogxK
U2 - 10.1038/sj.onc.1207697
DO - 10.1038/sj.onc.1207697
M3 - Article
C2 - 15064725
AN - SCOPUS:3142683871
VL - 23
SP - 5360
EP - 5370
JO - Oncogene
JF - Oncogene
SN - 0950-9232
IS - 31
ER -