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Oncogenic Genomic Alterations, Clinical Phenotypes, and Outcomes in Metastatic Castration-Sensitive Prostate Cancer. | LitMetric

AI Article Synopsis

  • - The study investigates the genomic factors related to clinical outcomes in metastatic castration-sensitive prostate cancer, aiming to clarify how these factors influence disease progression and treatment responses.
  • - In a cohort of 424 patients, findings showed that high-volume disease (≥4 bone or visceral metastases) corresponded to increased rates of castration resistance and mortality, with specific genomic alterations being more prevalent in these cases.
  • - Key pathways, such as NOTCH and cell cycle, were highlighted as significant in high-volume disease, suggesting that understanding these genomic features can improve molecular classification and guide treatment decisions for affected patients.

Article Abstract

Purpose: The genomic underpinning of clinical phenotypes and outcomes in metastatic castration-sensitive prostate cancer is unclear.

Experimental Design: In patients with metastatic castration-sensitive prostate cancer at a tertiary referral center, clinical-grade targeted tumor sequencing was performed to quantify tumor DNA copy number alterations and alterations in predefined oncogenic signaling pathways. Disease volume was classified as high volume (≥4 bone metastases or visceral metastases) versus low volume.

Results: Among 424 patients (88% white), 213 (50%) had high-volume disease and 211 (50%) had low-volume disease, 275 (65%) had metastatic disease, and 149 (35%) had metastatic recurrence of nonmetastatic disease. Rates of castration resistance [adjusted hazard ratio, 1.84; 95% confidence interval (CI), 1.40-2.41] and death (adjusted hazard ratio, 3.71; 95% CI, 2.28-6.02) were higher in high-volume disease. Tumors from high-volume disease had more copy number alterations. The NOTCH, cell cycle, and epigenetic modifier pathways were the highest-ranking pathways enriched in high-volume disease. metastatic disease differed from metastatic recurrences in the prevalence of alterations but had similar prognosis. Rates of castration resistance differed 1.5-fold to 5-fold according to alterations in (inverse), and , and the cell cycle, WNT (inverse), and MYC pathways, adjusting for disease volume and other genomic pathways. Overall survival rates differed 2-fold to 4-fold according to (inverse), WNT (inverse), and cell-cycle alterations. PI3K pathway alterations were not associated with prognosis once adjusted for other factors.

Conclusions: This study identified genomic features associated with prognosis in metastatic castration-sensitive disease that may aid in molecular classification and treatment selection.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7334067PMC
http://dx.doi.org/10.1158/1078-0432.CCR-20-0168DOI Listing

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