showed a trendP = .0546
In the multivariate analysis, concurrent RT emerged as the only independent factor (adjusted HR = 0.180, 95% CI: 0.051-0.632; P = .0075), while prior locoregional therapy showed a trend toward longer OS (adjusted HR = 0.351 95% CI: 0.121-1.021; P = .0546; Table 3 ).