Ultimately, ten hub genes (CD74, COL1A1, TXNRD1, CCND1, COL5A1, SERPINH1, BCL6, ITGA10, FOS, and JUNB) were obtained and the validation of expression levels was performed to elucidate the molecular mechanism of AS and AI pathological processes. The gene discussed is COL1A1; the disease is aortic stenosis.