Equivalently, in HNSCC from the Centre Antoine Lacassagne (French cohort, Table S1), high levels of Plk1 mRNA correlated with shorter DFS (27.45 months vs 53.27 months, p = 0.011, Figure 1E) and shorter OS (78.13 months vs undefined, p = 0.031, Figure 1F). Here, PLK1 is linked to head and neck squamous cell carcinoma.