GPT and periodontitis: The results showed that some differential genera (Figure 4A and Supplementary Figure 10) and species (Figure 4B and Supplementary Figure 11) were related to clinical characteristics, such as fasting blood sugar (Glu), body mass index (BMI), periodontitis (PD), blood urea nitrogen (BUN), systolic blood pressure (SBP), total cholesterol (TCHO), glycosylated serum protein (GA.L), creatinine (Cre) and alanine aminotransferase (ALT).