Use of the cell cycle progression (CCP) score for predicting systemic disease and response to radiation of biochemical recurrence

Michael Koch, Jane S. Cho, Hristos Kaimakliotis, Liang Cheng, Zaina Sangale, Michael Brawer, William Welbourn, Julia Reid, Steven Stone

Research output: Contribution to journalArticle

8 Scopus citations

Abstract

BACKGROUND: Determining the optimal treatment for biochemical recurrence (BCR) after radical prostatectomy (RP) is challenging. OBJECTIVE:We evaluated the ability of CCP score (a prognostic RNA expression signature) to discriminate between systemic disease and local recurrence in patients with BCR after RP. METHODS: Sixty patients with BCR after RP were selected for analysis based on: 1) metastatic disease, 2) non-response to salvage external beam radiotherapy (EBRT), and 3) durable response to salvage EBRT. CCP scores were generated from the RNA expression of 46 genes. Logistic regression assessed the association between CCP score and patient group. RESULTS: Passing CCP scores were generated for 47 patients with complete clinical and pathologic data. CCP score predicted clinical status when comparing patients with metastatic disease or non-responders to salvage therapy to patients with durable response (p = 0.006). CCP score remained significantly predictive of clinical status after accounting for time to BCR, PSA level at BCR, and Gleason score (p = 0.0031). CONCLUSIONS: Elevated CCP score was associated with increased risk of systemic disease, indicating that CCP score may be useful in identifying patients with BCR who are most likely to benefit from salvage radiation therapy.

Original languageEnglish (US)
Pages (from-to)83-88
Number of pages6
JournalCancer Biomarkers
Volume17
Issue number1
DOIs
StatePublished - 2016

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Keywords

  • biochemical recurrence
  • cell cycle progression score
  • Prostate cancer
  • prostatectomy
  • salvage radiotherapy

ASJC Scopus subject areas

  • Cancer Research
  • Oncology
  • Genetics

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