Fig. 2From: Association between pretreatment lymphocyte count and response to PD1 inhibitors in head and neck squamous cell carcinomasTo compare Kaplan-Meier curves for time-to-progression analysis, the patient cohort treated with standard PD1 inhibitor therapy was stratified by absolute lymphocyte count (ALC) of 600 cells/μl as described in the methods section. Patients with ALC < 600 cells/μl were associated with significantly shorter PFS. *P < 0.05 by Wilcoxon testBack to article page