To further explore the correlation between CDK1 and NCAPG in renal clear cell carcinoma, we extracted the correlation between NCAPG and CDK1 from online database, and the results showed that CDK1 was positively related with NCAPG (R = 0.73; P < 0.01; Figure 4(a)). The gene discussed is NCAPG; the disease is clear cell renal carcinoma.