GC	gastric cancer
WHO	World Health Organization
GIST	gastrointestinal stromal tumor
NET	neuroendocrine tumors
Hp	Helicobacter pylori
NSAIDs	nonsteroidal anti-inflammatory drugs
NCGC	non-cardia gastric cancer
MALT	mucosa-associated lymphoid tissue
CI	confidence interval
RR	relative risk
CGC	cardia gastric cancer
RCTs	randomized controlled trials
GSTT1	glutathione S-transferase theta 1
SULT1A1	sulfotransferase family 1A member 1
CYP1a1	cytochrome P450 family 1 subfamily A
NAT2	N-acetyltransferase 2
CDH1	cadherin 1
OR	odds ratio
DNA	deoxyribonucleic acid
ALDH2	aldehyde dehydrogenase-2
SToP	Stomach Cancer pooling
PUFAs	polyunsaturated fatty acids
IL-1	interleukin-1
TNF	tumor necrosis factor
COX-2	cyclooxygenase-2 inhibitor
IGL	insulin-like growth factor
AG	atrophic gastritis
IM	intestinal metaplasia
OLGA	Operative Link on Gastritis Assessment
OLGIM	Operative Link on Gastritis Assessment based on Intestinal Metaplasia
CE	chromoendoscopy
ECG	early gastric cancer
sPG	serum pepsinogen
PGI	pepsinogen I
PGII	pepsinogen II
sPGr	serum pepsinogen I/pepsinogen II ratio
LncRNAs	long non-coding RNAs
MiRNAs	micro-RNAs
G-17	gastrin-17
ER	endoscopic resection
LNM	lymph node metastasis
EMR	endoscopic mucosal resection
ESD	endoscopic submucosal dissection
SM	submucosal invasion
MESDA	magnified endoscopy simple diagnostic algorithm
MV	microvascular
MS	microsurface
CE	conventional endoscopy
EUS	endosonography
ESGE	European Society of Gastrointestinal Endoscopy
QOL	quality of life
LOHS	length of hospital stay
AEs	adverse events
OS	overall survival
CSS	cancer-specific survival
RD	risk difference
LADG	laparoscopy distal gastrectomy
ODG	open distal gastrectomy
PG	proximal gastrectomy
PPG	pylorus-preserving gastrectomy
TG	total gastrectomy
DG	distal gastrectomy
SN	sentinel node
HR	hazard ratio
GCS	gastric cancer subscale