New Risk Stratification
GNEC patients were divided into three risk cohorts based on the examination of the X-tile software: low risk (46.0 < total points < 204.5), middle risk (204.5 < total points < 330.2), and high risk (330.2 < total points < 437.6; Fig. 
Cut-off point for risk stratification selected using X-tile
KM analyses of postoperative GNEC patients. Compared with the new risk stratification, the stage I and stage II patients couldn’t be well distinguished in the AJCC staging system. The limited ability to discriminate between stage III and stage IV was also presented (Fig. 