BRD2 and neoplasm: At the genus level, when compared with the Normal group, NAT showed a lower abundance in both Acetobacter (V1V2 p = 0.01; V4/V5 p = 0.2; V5V7 p = 0.3; V7V9 p = 0.008) and Liquorilactobacillus (V1V2 p = 0.0006; V4/V5 p = 0.0005; V5V7 p = 0.0016; V7V9 p = 0.01), whereas no significant difference with the Tumor group was detected (Fig. 2B, Additional file 2: Fig S6).