Predictive significance of inflammatory markers and mGPS in metastatic castration-resistant prostate cancer treated with abiraterone or enzalutamide

Development and Validation of Prognostic Model for Metastatic Castration-Resistant Prostate Cancer Patients Treated With First-Line Abiraterone or Enzalutamide

INTRODUCTION

Over the years, several prognostic models were developed in patients receiving chemotherapy for metastatic castration resistant prostate cancer (mCRPC), while data on androgen-receptor signaling inhibitors (ARSI) in a real-world setting are limited.

PATIENTS AND METHODS

We compared a consecutive series of 565 mCRPC patients receiving first-line ARSI at 4 high-volume Italian Centers (development set) to an external series of 180 patients receiving the same treatment at another Italian high-volume Center (training set), between 2011 and 2022. Sixteen clinical and baseline laboratory variables were selected to develop a prognostic model. Patients were categorized into risk groups according to the number of independent factors positively associated with overall survival (OS).

RESULTS

In the development cohort, after a median follow-up of 21.1 months, the median OS was 30.4 months (95% CI 27.5-33.4). At the multivariate analysis, 7 variables [age, prostate specific antigen (PSA) doubling time, baseline levels of hemoglobin, PSA, time to castration resistance, ECOG PS and bone metastases number) were included into the final model. The median OS was 13.4, 25.7 and 46.4 months in poor (0-2 factors), intermediate (3-4 factors) and good (≥ 5 factors) prognosis group, respectively. The application of the model to the validation set confirmed its ability to prognosticate for OS. The model c-indexes were 0.68 (95% CI 0.64-0.72) and 0.75 (95% CI 0.68-0.81) in the development and validation cohort, respectively.

CONCLUSIONS

Our model, based on clinical and laboratory variables readily assessable in clinical practice, might prognosticate the OS of mCRPC patients receiving first-line ARSI.

Prognostic factors for overall survival in castration-resistant metastatic prostate cancer treated with docetaxel (MeProCSS): results from a German real-world cohort

PURPOSE

To identify prognostic factors for overall survival (OS) and develop a prognostic score in patients receiving docetaxel in metastatic castration-resistant prostate cancer (mCRPC).

METHODS

Retrospective analysis was conducted on mCRPC patients treated with docetaxel at a German tertiary center between March 2010 and November 2023. Prognostic clinical and laboratory factors were analyzed using uni- and multivariable logistic regression. Next, the result of the modified Glasgow Prognostic Score (mGPS), neutrophil-to-lymphocyte ratio (NLR) (cut-off ≥3), the presence of high-volume bone metastases (as defined by CHAARTED criteria), hemoglobin (Hb) (cut off < 13.2 g/dl), Gleason score ≥8, and presence of visceral metastases were combined into the Metastasized Prostate Cancer Survival Score (MeProCSS). Patients were then stratified into three prognostic groups. Their OS was assessed by Kaplan-Meier analysis.

RESULTS

Median OS for the overall cohort (n = 153) and the first-line cohort (n = 83) was 18 and 21.5 months, respectively. In multivariable analysis, high-volume bone metastases and Hb levels below the norm were significant predictors of shorter OS in the total cohort. The MeProCSS demonstrated an area under curve (AUC) of 0.837 in the overall cohort and 0.946 in first-line cohort. Kaplan-Meier analysis revealed a significant association between lower MeProCSS and longer OS in both the overall (p<0.001) and first-line (p = 0.035) cohort.

CONCLUSION

MeProCSS, consisting of routinely collected parameters prior to the start of chemotherapy, seems to effectively stratify patients with mCRPC into risk groups based on their metastatic burden, nutritional and inflammatory status. This model may guide treatment decisions and reveal a potentially often underestimated or overlooked urgency for additional measures as supportive palliative care in mCRPC patients. Further large and prospective studies are necessary for validation of MeProCSS-also in other systemic PC therapy regimens.

Prognostic Value of Lymphocyte-to-Monocyte Ratio (LMR) in Patients With Prostate Cancer: A Systematic Review and Meta-Analysis

The objective of this study is to evaluate the prognostic value of lymphocyte-to-monocyte ratio (LMR) in patients with prostate cancer (PCa) by a method of meta-analysis. China National Knowledge Infrastructure (CNKI), Wanfang Data, PubMed, Web of Science, Cochrane Library, and Embase were searched to collect relevant literature until March 2023. The Newcastle-Ottawa Scale was used to assess the bias risk of the literature included. Hazard ratios (HRs) and 95% confidence intervals (CIs) were used to evaluate the prognostic value of LMR in PCa. Stata 15.0 statistical software was used for data analysis. A total of six published articles were included in this meta-analysis, containing 1,104 patients with PCa. The results of the meta-analysis indicated better overall survival (OS; HR = 1.73, 95% CI: 1.73, p = .001) and progression-free survival (PFS; HR = 2.63, 95% CI: 1.58~4.38, p < .001) in patients with PCa with low LMR compared with high LMR. In conclusion, compared with low LMR, PCa patients with high LMR have a better prognosis. LMR is an independent risk factor affecting the long-term prognosis of patients with PCa. The detection of LMR before treatment is of certain significance in judging the clinical prognosis of patients with PCa.