Objective To evaluate the performance of the Rotterdam Prostate Cancer Risk Calculator(RPCRC)in Chi-nese prostate cancer patients.Methods A retrospective analysis was performed on 300 Chinese cases from February 2020 to August 2022 with comprehensive data,including multiparametric Magnetic Resonance Imaging(mpMRI),Prostate Spe-cific Antigen(PSA),Digital Rectal Examination(DRE),PI-RADS score,pathological data,and medical records.The RPCRC(Ver.3.2.3,incorporating MRI evaluation)was used to assess the risk of developing Prostate Cancer(PCa)and Clinically Significant Prostate Cancer(csPCa).The ROC curve,calibration curve,and decision curve were used to evaluate its performance,calibration,and clinical net benefit.Results Out of the cases,155 were included in the study,of which 43(28%)were diagnosed with PCa and 36(21%)with csPCa.The AUC of RPCRC for predicting PCa risk(0.94)was significantly higher than using PI-RADS score alone(0.79)and using tPSA alone(0.60).The AUC of RPCRC for predic-ting csPCa risk(0.91)was significantly higher than using PIRADS score alone(0.86)and using tPSA alone(0.65).There was no statistically significant difference in the AUCs of RPCRC for predicting PCa and csPCa risks(P>0.05).The calibration curve revealed that the RPCRC s estimation of probabilities did not have significant systematic biases.The deci-sion curve showed that RPCRC performed better in predicting PCa than csPCa.Conclusion The RPCRC performs well in predicting the risks of PCa and csPCa in the Chinese population,facilitating the expansion of prostate cancer screening and aiding early diagnosis and rational treatment of prostate cancer.However,its predictive ability for csPCa is slightly low-er than for PCa,and further improvements are needed for accurate prediction of csPCa and to avoid overtreatment.
Prostate neoplasmClinically significant prostate cancerMagnetic resonance imagingProstate cancer risk calculatorScreening