Septin 9 Methylation in Nasopharyngeal Swabs: A Potential Minimally Invasive Biomarker for the Early Detection of Nasopharyngeal Carcinoma

Table 3

Identification of Septin 9 methylation in nasopharyngeal swabs.

Subjects	Total cases	No. of methylated Septin 9	Methylation rates (%)	value
NPC	22	16	72.7 (16/22)	0.009/0.012^a
T1-2	12	8	66.7 (8/12)	0.78
T3-4	10	8	80 (8/10)
Nasopharyngitis	19	2	10.5 (2/19)	0.31
Healthy control	10	0	0 (0/10)

^a for NPC vs. nasopharyngitis; for NPC vs. healthy control.