Lactate dehydrogenase, Gleason score and HER-2 overexpression are significant prognostic factors for M1b prostate cancer

Yoshiaki Yamada, Kogenta Nakamura, Shigeyuki Aoki, Motoi Tobiume, Kenji Zennami, Yoshiharu Kato, Genya Nishikawa, Takahiko Yoshizawa, Youko Itoh, Akiko Nakaoka, Eri Yoshida, Tomoe Uchiyama, Nobuaki Honda

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

It has not been elucidated whether certain types of M1b prostate cancer (M1b PC) are associated with a poor outcome. The present study retrospectively identified predictive factors related to the outcome of M1b PC. The subjects were 104 patients who attended our hospital and received a diagnosis of M1b PC. The observation period ranged from 4 to 122 months (median, 43 months). The parameters investigated were: T classification, N classification, Gleason score (GS), pretreatment prostate-specific antigen (PSA) level, extent of disease (EOD) grade, alkaline phosphatase (ALP), lactate dehydrogenase (LDH), calcium, and hemoglobin (Hb) levels, platelet count, and the status of HER-2 overexpression as determined with a Hercep Test™ Kit using initial needle biopsy specimens for diagnosis. Log-rank test and Cox univariate analysis identified the following factors with statistically significant differences: pretreatment PSA ≥192, N1, GS ≥8, EOD grade 3+4, high LDH, high ALP, low Hb, and HER-2 overexpression. Multivariate Cox proportional hazard analysis identified the factors GS ≥8, high LDH, and HER-2 overexpression with significant differences. The hazard ratio was 5.962, 2.465, and 2.907, respectively, and the probability value was P=0.0218, P=0.0207 and P=0.0090, respectively. When the subjects with GS ≥8, high LDH, and HER-2 over-expression were classified as the high-risk group, the 5-year cause-specific survival rate was 51.2, 29.6, and 20.0%, respectively. The present study showed that M1b PC patients with GS ≥8, high LDH, and HER-2 overexpression have a very poor outcome and thus, should be treated as a high-risk group requiring close follow-up.

Original languageEnglish
Pages (from-to)937-944
Number of pages8
JournalOncology reports
Volume25
Issue number4
DOIs
Publication statusPublished - 01-04-2011
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Oncology
  • Cancer Research

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