MCM2-7 were all upregulated in carcinoma tissue in our data, and MCM3, MCM4, and MCM6 were associated with differential miRNA expression, including hsa-miR-106b-5p, hsa-miR-17-5p, hsa-miR-19b-3p, hsa-miR-20a-5p, hsa-miR-20b-5p, hsa-miR-25-3p, and hsa-miR-93-5p. The gene discussed is MCM3; the disease is carcinoma.