Prostate specific membrane antigen mRNA in blood as a potential predictor of biochemical recurrence after radical prostatectomy

J Korean Med Sci. 2010 Sep;25(9):1291-5. doi: 10.3346/jkms.2010.25.9.1291. Epub 2010 Aug 12.

Abstract

We investigated whether the detection of prostate specific membrane antigen (PSMA) in blood preoperatively has predictive value for biochemical recurrence (BCR) after radical prostatectomy in patients with prostate cancer. All 134 patients scheduled to receive radical prostatectomy for prostate cancer were prospectively enrolled. The authors used nested reverse transcriptase-polymerase chain reaction (RT-PCR) assay to detect PSMA mRNA-bearing cells in peripheral blood, and analyzed the ability of PSMA mRNA positivity to predict BCR after surgery. PSMA-mRNA was detected in 24 (17.9%) patients by RT-PCR. Over a median follow-up of 20 months (range, 3 to 46 months), BCR developed in 15 patients (11.2%) and median time to BCR was 7 months (range, 3 to 25 months). Kaplan-Meier analysis revealed a significant difference between those positive or negative for PSMA in terms of recurrence-free actuarial probability (log rank P=0.0039). Multivariate analysis showed that positivity for PSMA mRNA (HR: 3.697, 95% CI 1.285-10.634, P=0.015) and a biopsy Gleason score of >or=7 (HR: 4.500, 95% CI 1.419-14.274, P=0.011) were independent preoperative predictors of BCR. The presence of PSMA mRNA in peripheral blood can be used to predict BCR after radical prostatectomy.

Keywords: Biochemical Recurrence; Prostate Specific Membrane Antigen; Prostatic Neoplasms.

Publication types

  • Clinical Trial
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Aged
  • Antigens, Surface / blood*
  • Antigens, Surface / genetics
  • Glutamate Carboxypeptidase II / blood*
  • Glutamate Carboxypeptidase II / genetics
  • Humans
  • Male
  • Middle Aged
  • Neoplasm Recurrence, Local / blood
  • Neoplasm Recurrence, Local / diagnosis*
  • Predictive Value of Tests
  • Prostatectomy*
  • Prostatic Neoplasms / blood
  • Prostatic Neoplasms / diagnosis*
  • Prostatic Neoplasms / surgery
  • RNA, Messenger / blood*
  • Reverse Transcriptase Polymerase Chain Reaction
  • Severity of Illness Index
  • Time Factors

Substances

  • Antigens, Surface
  • RNA, Messenger
  • FOLH1 protein, human
  • Glutamate Carboxypeptidase II