Microsatellite Instability in Head and Neck Squamous Cell Carcinoma: A Study of a Brazilian Population

Table 3

D3S1611 MSI frequency according to clinical and epidemiological features.

Features	D3S1611 marker
	Total		MSI		MSS		P
	No.	(%)	No.	f	No.	f
Gender
Female	8	(21.6)	1	0.125	7	0.875	—
Male	29	(78.4)	4	0.138	25	0.862
Age range, yrs
≤50	8	(21.6)	0	0.0	8	1.0	0.034
50–70	22	(59.5)	2	0.091	20	0.909
>70	7	(18.9)	3	0.492	4	0.508
Tumor site
Oral cavity	15	(40.5)	1	0.067	14	0.933	—
Oropharynx	8	(21.6)	3	0.375	5	0.625
Larynx	14	(37.9)	1	0.071	13	0.929
Differentiation
Well	8	(21.6)	0	0.0	8	1.0	0.339
Moderately	21	(56.8)	3	0.143	18	0.857
Poorly	8	(21.6)	2	0.250	6	0.750
Total	37	(100.0)	5	0.135	32	0.865

MSI: microsatellite instability; MSS: microsatellite stable; f: frequency; P: significance value.