Backgrounds: High-volume (HV) metastatic castration-sensitive prostate cancer (mCSPC) is an aggressive disease. Despite this, we aimed to assess the metastatic patterns associated with a favorable prognosis in HV disease with bone metastasis (BM), including BM’s coexistence with lung metastasis (LM). Methods: We retrospectively analyzed 379 patients with synchronous mCSPC. They were categorized using the CHAARTED criteria as low-volume (LV) or HV with BM, classified based on extent of the disease from 1 to 4 (HV-EOD1–4) with or without LM. Multivariate Cox models for overall survival and castration-resistance-free survival assessed the prognostic values of HV-EOD1–4 compared with LV disease and the presence of LM. Site-specific radiographic progression at the time of castration-resistant prostate diagnosis was assessed in patients with BM and LM. Results: Multivariate analyses for overall survival showed no prognostic value of HV-EOD1 (hazard ratio [HR] 0.90; 95% confidence interval [CI] 0.43–1.85;p= 0.77), HV-EOD2 (HR 1.17; 95% CI 0.69–1.99;p= 0.57), and LM (HR 1.29; 95% CI 0.80–2.07;p= 0.29). In the analyses, HV-EOD ≤ 2 and LM did not influence castration resistance-free survival. LM showed a significantly lower incidence of radiographic progression to castration-resistant prostate cancer than BM (6.0% vs. 29.9%,p< 0.001). Conclusions: This study indicates the prognostic heterogeneity of HV disease considering BM and LM. These findings may aid in determining the treatment intensity for mCSPC.
背景:高负荷(HV)转移性激素敏感性前列腺癌(mCSPC)是一种侵袭性疾病。尽管如此,本研究旨在评估伴有骨转移(BM)的HV疾病中与良好预后相关的转移模式,包括BM与肺转移(LM)共存的情况。方法:我们回顾性分析了379例同步性mCSPC患者。根据CHAARTED标准,将患者分为低负荷(LV)或伴有BM的HV疾病,并依据疾病范围(1至4级)分为HV-EOD1-4亚组,同时记录是否伴有LM。通过多变量Cox模型分析总生存期和无去势抵抗生存期,评估HV-EOD1-4与LV疾病相比以及LM存在的预后价值。在BM和LM患者中,评估了去势抵抗性前列腺癌诊断时特定部位的影像学进展。结果:总生存期的多变量分析显示,HV-EOD1(风险比[HR] 0.90;95%置信区间[CI] 0.43–1.85;p=0.77)、HV-EOD2(HR 1.17;95% CI 0.69–1.99;p=0.57)和LM(HR 1.29;95% CI 0.80–2.07;p=0.29)均无显著预后价值。在分析中,HV-EOD ≤ 2和LM对无去势抵抗生存期无影响。与BM相比,LM进展为去势抵抗性前列腺癌的影像学发生率显著较低(6.0% vs. 29.9%,p<0.001)。结论:本研究提示,考虑BM和LM的HV疾病存在预后异质性。这些发现可能有助于确定mCSPC的治疗强度。