Figure 10

Prognostic significance of plasma metabolites and metabolite ratios. Kaplan–Meier survival curves for HNSCC patients stratified by seven plasma metabolites and metabolite ratios with a cut-off according to the Youden index: (a) PC aa C32:2; (b) PC aa C34:4; (c) PC aa C36:5; (d) PC aa C36:6; (e) PC ae 34:2; (f) (Ala/Gln)/(Tyr/Phe). HR = Hazard Ratio; CI = 95% Confidence Interval.