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. 2014 Nov 18;9(11):e113702. doi: 10.1371/journal.pone.0113702

Figure 4. Kaplan-Meier curves of recurrence-free survival and disease-specific survival rates according to HPV status in OPC patients receiving curative treatment.

Figure 4

After curative treatment, HPV DNA-positive OPC patients showed significantly better recurrence-free survival and disease-specific survival rates compared to HPV DNA-negative OPC patients. Similar results were found in HPV mRNA-positive OPC patients.