In contrast, higher abundances of the genera Oscillospira, Prevotella, [Prevotella], Parabacteroides, AF12 (family Rikenellaceae), Rikenella, Dehalobacterium, Helicobacter, Desulfovibrio and rc4_4 (family Peptococcaceae) were observed in the NOD1 KO group compared to the WT under a CHD. The gene discussed is NOD1; the disease is coronary artery disorder.