Based on the relationship between the circRNA–miRNA and miRNA–hub gene pairs, a regulatory circRNA–miRNA–hub gene network for DVT-related hub genes was constructed, including CBT15_circR_28491-rno-miR-139-3p-Kif18a/Cdca8/Nek2 axis (Figure 5). The gene discussed is NEK2; the disease is deep vein thrombosis.