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. 2020 Jul 17;12:5893–5902. doi: 10.2147/CMAR.S257299

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© 2020 Cui et al.

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Kaplan-Meier analysis for overall survival of HSCC patients. Kaplan-Meier analysis of overall survival stratified by positive versus negative expression of PD-L1 in 95 HSCC patients (P<0.001). Log rank test was used for analyzing the differences.

Abbreviations: HSCC, hypopharyngeal squamous cell carcinoma; PD-L1, programmed death-ligand 1.