Fisher's exact test was also performed to determine the difference in acute toxicities (cutaneous toxicity, mucitis, nausea, and vomiting, as well as grade 3-4 neutropenia) according to HPV status.
Toxic effects that were evaluated included cutaneous toxicities, mucitis, nausea and vomiting, need for gavage, grade 3-4 neutropenia, per-treatment hospitalisation, and per-treatment deaths.