Figure 2.
Kaplan-Meier curves of recurrence-free survival in OPSCC patients according to (A) HPV DNA, (B) HPV mRNA and (C) p16INK4a overexpression. Recurrence-free survival was significantly better in HPV DNA-positive OPSCC patients than HPV DNA-negative OPSCC patients and in OPSCC patients with p16INK4a overexpression than in OPSCC patients without p16INK4a overexpression.