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PFLS contributes to tumor progression and radiotherapy benefits. (A,B) On the left of each panel, the Kaplan–Meier curve of HNSCC cancer samples was stratified by the risk group with the log-rank test p-value provided. Forest plot showing the result of multivariate Cox regression analysis for correlation between the PFLS and clinical features and the (A) progression-free or (B) overall survival was plotted on the right.
