3.

血浆与组织标本的RAS检测突变类型结果

RAS mutation types in plasma cfDNA and tumor tissue DNA (n=71)

	Plasma			Tumor tissue
	n	Mutation rate (%)		n	Mutation rate (%)
#Extend RAS test detected hotspot mutations in KRAS exon 2, 3, 4 and NRAS exon 2, 3, 4.
KRAS	20	28.17		31	43.66
NRAS	3	4.23		5	7.04
KRAS exon 2	18	25.35		27	38.03
KRAS exon 3, 4 and NRAS exon 2, 3, 4	5	7.04		9	12.68
Extend RAS#	23	32.39		36	50.70