European journal of nuclear medicine and molecular imaging · 2025
Bellmunt risk score enables survival prediction in men with metastatic castration resistant prostate cancer (mCRPC) undergoing PSMA-targeted radioligand therapy (LUMEN).
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Büttner Thomas, Marinova Milka, Gaertner Florian C, Kreppel Barbara, Fritsche Leander, Immanuel Christian, Geraths Gerd, Kürpig Stefan, Küppers Jim, Schmidt-Wolf Ingo G H, Essler Markus, Ritter Manuel, Krausewitz Philipp
Аннотация
PURPOSE: [177Lu]Lu-PSMA-617 therapy has emerged as a promising radioligand treatment for metastatic castration-resistant prostate cancer (mCRPC). Given the overall poor prognosis of mCRPC, accurately predicting the key endpoint overall survival (OS) remains an ongoing challenge, crucial for optimizing risk/benefit assessment prior to treatment. This study investigates the prognostic utility of the simple designed Bellmunt Risk Score (BRS) in mCRPC patients treated with [177Lu]Lu-PSMA-617.
METHODS: We retrospectively evaluated data from 386 mCRPC patients who had received [177Lu]Lu-PSMA-617 therapy at our center. BRS was constructed by attributing one point for each of the following risk factors: ECOG performance status (ECOG PS) > 0, hemoglobin < 10 g/dL, and the presence of liver metastases. Additionally, an enhanced version of the score including C-reactive protein (CRP) > 30 mg/dL and a modified version utilizing a semi-quantitative ECOG PS were developed. Statistical analysis included Cox regression, Kaplan-Meier estimates, concordance indices and time-dependent area under the curve (tAUC).
RESULTS: The BRS served as an independent predictor of OS in multivariable analysis. The estimated median OS was 17.6, 10.9, 6.6, and 2.7 months for patients with scores of 0, 1, 2 and 3, respectively (Log-Rank P < 0.001). The tAUC values for predicting 1-year and 2-year OS were 71.6% and 74.4%, respectively. The CRP-enhanced score further improved prognostic accuracy, achieving tAUCs of 75.7% for 1-year OS and 78.1% for 2-year OS.
CONCLUSION: The Bellmunt Risk Score effectively stratifies mCRPC patients undergoing [177Lu]Lu-PSMA-617 therapy. Its straightforward design, based on readily accessible clinical parameters, ensures practicality and utility in real-world clinical settings.
METHODS: We retrospectively evaluated data from 386 mCRPC patients who had received [177Lu]Lu-PSMA-617 therapy at our center. BRS was constructed by attributing one point for each of the following risk factors: ECOG performance status (ECOG PS) > 0, hemoglobin < 10 g/dL, and the presence of liver metastases. Additionally, an enhanced version of the score including C-reactive protein (CRP) > 30 mg/dL and a modified version utilizing a semi-quantitative ECOG PS were developed. Statistical analysis included Cox regression, Kaplan-Meier estimates, concordance indices and time-dependent area under the curve (tAUC).
RESULTS: The BRS served as an independent predictor of OS in multivariable analysis. The estimated median OS was 17.6, 10.9, 6.6, and 2.7 months for patients with scores of 0, 1, 2 and 3, respectively (Log-Rank P < 0.001). The tAUC values for predicting 1-year and 2-year OS were 71.6% and 74.4%, respectively. The CRP-enhanced score further improved prognostic accuracy, achieving tAUCs of 75.7% for 1-year OS and 78.1% for 2-year OS.
CONCLUSION: The Bellmunt Risk Score effectively stratifies mCRPC patients undergoing [177Lu]Lu-PSMA-617 therapy. Its straightforward design, based on readily accessible clinical parameters, ensures practicality and utility in real-world clinical settings.