GA |
Firmicutes |
Streptococcus |
Relative abundance increased in GA patients compared to healthy controls |
57 newly diagnosed GA, and 80 healthy controls |
16S rRNA pyrosequencing |
Tongue coating sample from patients |
Tongue coating sample from healthy controls |
Wu et al., 2018 [83] |
CRC |
Firmicutes |
Streptococcus |
Relative abundance increased in CRC patients compared to healthy controls |
99 colorectal cancer patients, 32 colorectal polyps patients, and 103 healthy controls |
16S rRNA sequencing |
Saliva samples from cancer patients |
Saliva and faecal samples from controls |
Flemer et al., 2017 [78] |