Table 6 The distribution of CagA sequence types in different geographical regions

From: Diversity of 3′ variable region of cagA gene in Helicobacter pylori strains isolated from Chinese population

CagA type		Geographical regions														Total
CagA type		FJ	SD	GX	YN	HL	HN	NM	QH	ZJ	BJ	NX	TW	SX	XZ	Total
East Asian type CagA	ABD^*	65	75	69	41	49	46	18	32	6	4	3	4	1	0	413
	ABD′	0	1	3	0	0	0	1	0	0	0	0	0	0	0	5
	AB-D′	0	0	0	0	0	0	5	0	0	0	0	0	0	0	5
	AB′BD	10	3	1	24^†	1	0	0	0	0	0	1	0	0	1	41
	AB′B′BD	2	0	0	3	0	0	0	0	0	0	0	0	0	0	5
	AAABD	1	0	0	0	0	0	0	0	0	0	0	0	0	0	1
	ABDABD	1	0	0	0	0	0	0	0	0	0	0	0	0	0	1
	AD	0	0	0	0	1	0	1	0	0	0	0	0	0	0	2
	AD′	1	0	0	0	0	0	0	0	0	0	0	0	0	0	1
	A–D′	0	0	0	0	0	0	0	0	0	0	0	0	1	0	1
	BD	0	1	0	0	0	0	0	0	0	0	0	0	0	0	1
	AB′BB″DAB′	1	0	0	0	0	0	0	0	0	0	0	0	0	0	1
	AB′B′B′B′BD	0	0	0	1	0	0	0	0	0	0	0	0	0	0	1
	ABB″B″	1	0	0	0	0	0	0	0	0	0	0	0	0	0	1
	AB′B′B′B′B′BD	0	0	0	0	0	0	0	0	1	0	0	0	0	0	1
	D	1	0	0	0	0	0	0	0	0	0	0	0	0	0	1
Total		83	80	73	69	51	46	25	32	7	4	4	4	2	1	481
western type CagA	ABC	0	2	1	2	5	0	5^‡	1	0	0	0	0	0	0	16
	ABCC	0	0	1	1	0	0	2	0	0	0	0	0	0	0	4
	ABCCCC	0	0	0	0	0	0	1	0	0	0	0	0	0	0	1
	AC	0	0	0	1	0	0	0	0	0	0	0	0	0	0	1
Total		0	2	2	4	5	0	8	1	0	0	0	0	0	0	22
All CagA type total		83	82	75	73	56	46	33	33	7	4	4	4	2	1	503

Isolates were from 14 regions: Fujian (FJ), Shandong (SD), Guangxi (GX), Yunnan (YN), Heilongjiang (HL), Hunan (HN), Neimenggu (NM), Qinghai (QH), Zhejiang (ZJ), Beijing (BJ), Ningxia (NX), Taiwan (TW), Shanxi (SX) and Xizang (XZ). ^* There was a significant difference in the presence of CagA-ABD type between different geographical regions (P < 0.01). ^† CagA-AB′BD type was signifcantly associated with Yunnan isolates (P < 0.001). ^‡ CagA-ABC type was signifcantly associated with Neimenggu isolates (P < 0.01)

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