A multivariable prediction model combining 18F-PSMA PET/CT and mpMRI for clinically significant prostate cancer: development and validation - Summary - MDSpire

A multivariable prediction model combining 18F-PSMA PET/CT and mpMRI for clinically significant prostate cancer: development and validation

  • By

  • Chaojian Yu

  • Zihou Zhao

  • Peidong Tian

  • Jingcheng Zhou

  • Lin Cai

  • Jianhui Qiu

  • Kan Gong

  • May 18, 2026

  • 0 min

Share

Objective:

To develop and validate a multivariable model combining clinical and imaging parameters to predict clinically significant prostate cancer (csPCa), which is crucial for effective treatment decisions.

Key Findings:
  • Final model retained 3 predictors: PRIMARY score, PI-RADS score, and PSAD.
  • Training AUC was 0.916 (95% CI: [insert CI]), sensitivity at Youden Index cutoff (≥84%) was 79.3%, specificity was 76.6%.
  • Sensitivity reached 96.0% at the recommended screening cutoff (≥46%).
  • AUC in internal test set was 0.914 (95% CI: [insert CI]) and 0.837 (95% CI: [insert CI]) in temporal validation.
Interpretation:

The multivariable model provides accurate risk stratification for csPCa, aiding in optimizing biopsy decisions and potentially reducing unnecessary procedures.

Limitations:
  • Study conducted at a single institution, which may limit generalizability to broader populations.
  • Potential selection bias due to inclusion criteria, which may affect the applicability of findings.
Conclusion:

The model integrating 18F-PSMA PET/CT and mpMRI parameters enhances pre-biopsy risk stratification for csPCa, potentially improving clinical decision-making.

Original Source(s)

Related Content