Table 7.

Association between biomarkers group and head and neck subsites.

Biomarker	Head and Neck Subsite	p Value	Odds Ratio (95% CI)
HPV-related biomarkers	Oropharynx	0.015	2.71 (0.46–4.97)
EBV-related biomarkers	Nasopharynx	0.012	4.04 (0.74–7.64)
Salivary-gland-related biomarkers	Salivary gland	0.002	5.72 (1.59–9.84)

HPV-related biomarkers: HPV DNA, RNA, circulating HPV proteins, and p16. EBV-related biomarkers: EBV DNA and RNA (EBER and EBER1 RNA). Salivary-gland-related biomarkers: salivary mRNA and GATA3.