Association of nucleophosmin/B23 mRNA expression with clinical outcome in patients with bladder carcinoma

Urology. 2004 Oct;64(4):839-44. doi: 10.1016/j.urology.2004.05.020.

Abstract

Objectives: To determine whether nucleophosmin/B23 mRNA expression in bladder carcinoma predicts recurrence, progression, and survival.

Methods: Real-time reverse transcriptase-polymerase chain reaction was performed on 50 fresh cancer specimens. The change in the cycle of threshold (Ct)was the difference in the Ct values derived from the nucleophosmin/B23 gene assayed and the 18S ribosomal RNA control [Ct (18S)-Ct (nucleophosmin/B23)].

Results: Fifty patients diagnosed with bladder cancer were followed up postoperatively for a median of 24 months. Overexpression of nucleophosmin/B23 mRNA was observed in 37.1% of patients with Stage pT1 and 73.3% of those with pT2-T4 disease. Nucleophosmin/B23 overexpression was not associated with tumor grade (P = 0.163) but was associated with bladder cancer recurrence (68.2%) and progression (88.9%) when adjusted for the effects of clinical stage. Multivariate analysis revealed that the overall tumor stage and nucleophosmin/B23 mRNA overexpression were important prognostic indicators for bladder carcinoma (P <0.05). Patients with nucleophosmin/B23 mRNA overexpression were at a significantly greater risk of disease recurrence and progression than those with low expression of nucleophosmin/B23 mRNA.

Conclusions: Overexpression of nucleophosmin/B23 mRNA was independently associated with bladder cancer recurrence and progression. In patients with muscular invasion disease, overexpression of nucleophosmin/B23 mRNA was associated with the greatest risk of recurrence and progression, suggesting a potential rationale for early definitive therapy in these patients.

Publication types

  • Comparative Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Aged
  • Aged, 80 and over
  • Carcinoma, Transitional Cell / chemistry*
  • Carcinoma, Transitional Cell / genetics
  • Carcinoma, Transitional Cell / mortality
  • Carcinoma, Transitional Cell / pathology
  • Carcinoma, Transitional Cell / surgery
  • Cells, Cultured / chemistry
  • Cohort Studies
  • Cystectomy
  • Disease Progression
  • Female
  • Follow-Up Studies
  • Gene Expression Regulation, Neoplastic*
  • Humans
  • Life Tables
  • Male
  • Middle Aged
  • Neoplasm Invasiveness
  • Neoplasm Metastasis
  • Neoplasm Proteins / biosynthesis
  • Neoplasm Proteins / genetics*
  • Neoplasm Recurrence, Local
  • Nuclear Proteins / biosynthesis
  • Nuclear Proteins / genetics*
  • Precancerous Conditions / pathology
  • Prognosis
  • RNA, Messenger / analysis*
  • RNA, Messenger / biosynthesis
  • RNA, Neoplasm / analysis*
  • RNA, Neoplasm / biosynthesis
  • Reverse Transcriptase Polymerase Chain Reaction
  • Risk
  • Survival Analysis
  • Treatment Outcome
  • Urinary Bladder Diseases / pathology
  • Urinary Bladder Neoplasms / chemistry*
  • Urinary Bladder Neoplasms / genetics
  • Urinary Bladder Neoplasms / mortality
  • Urinary Bladder Neoplasms / pathology
  • Urinary Bladder Neoplasms / surgery

Substances

  • Neoplasm Proteins
  • Nuclear Proteins
  • RNA, Messenger
  • RNA, Neoplasm
  • nucleophosmin