Table 1.

The relationships of Gut microbiota with GC in the world

Gut microbiota (genera/species)	Related to increase ↑/decrease ↓ of GC	Country	ASR-Both sexes (GLOBOCAN 2018)	Study (Reference)
Lactobacillus, Lachnospiraceae, Escherichia-Shigella, Nitrospirae, andBurkholderia	↑	China	20.7	Wang et al., 2016 [8]
Lactobacillus and Lachnospiraceae	↑	South Korea	39.6	Eun et al., 2014 [28]
genera Achromobacter, Clostridium, Citrobacter, Rhodococcus, andLactobacillus	↑	Portugal	11. 0	Ferreira et al., 2018 [11]
Lactobacillus	↑	China	20.7	Coker et al., 2018 [10]
genera Streptococcus, Lactobacillus, Veillonella, and Prevotella	↑	Sweden	3.3	Dicksved et al., 2009 [15]
Lactobacillus sp. and Lachnospiraceae	↑	Mexico City	5.6	Aviles-Jimenez et al., 2018 [26]
Lactobacillus	↑	Taiwan	-	Hsieh et al., 2018 [23]
Escherichia–Shigella and Klebsiella pneumoniae (belonging to Enterobacteriaceae taxa)	↑	South Korea	39.6	Jo et al., 2016 [7]
12 bacterial genera, includingPrevotella_9,Escherichia–Shigella, Klebsiella,Lactobacillus,Streptococcus,Alistipes, Veillonella,Bifidobacterium,Ruminococcaceae_UCG–002,Christensenellaceae_R-7_group,Parabacteroides,andPrevotella_2	↑	China	20.7	Qi et al., 2019 [32]
Species ofFirmicutes andActinobacteria	↓	China	20.7	Li et al., 2019 [33]