Table 2. Association of RGS4 expression with the clinicopathological characteristics of melanoma.

Characteristics	Case (n)	RGS4 expression		P value
		High (n =)	Low or no (n =)
Age
≤ 60	27	9	18	0.2337
> 60	13	2	11
Gender
Male	30	9	21	0.5396
Female	10	2	8
Tumor invasion(AJCC)
T1–T3	9	1	8	0.1938
T4	31	10	20
Lymphatic metastasis
Absent	32	7	25	0.1111
Present	8	4	4
TNM stage
I–II	30	5	25	0.0079**
III–IV	10	6	4

*Statistically significant difference; AJCC, American Joint Committee on Cancer.