Table 4. BRAF and K-ras mutation in different subtypes of serrated polyps.

	BRAF mutation (%)		K-ras mutation (%)
	Proximal	Distal	Proximal	Distal
MVHP	4/10 (40)	10/18 (55.5)	0	0
GCHP	0	0	2/19 (10.5)	3/21 (14.2)
SSA/P	10/14 (71.4)	6/9 (66.6)	0	0
SSA/P/DIS	3/3 (100)	2/2 (100)	0	0
TSA	0	0	1/2 (50)	3/4 (75)

GCHP, goblet cells hyperplastic polyp; MVHP, microvescicular hyperplastic polyp; SSA/P/DIS, sessile serrated adenoma with cytological dysplasia/polyp; TSA, traditional serrated adenoma.