[Multivariate analysis of recurrence and progression in stage T1 transitional-cell carcinoma of the bladder. Prognostic value of p53 and Ki67].
OBJECTIVE
To establish prognostic factors of recurrence and progression in stage T1 transitional cell bladder carcinoma, paying special attention to prognostic value of p53 and ki67.


METHODS
175 patients with incident bladder tumour at T1 category. The immunohistochemical study was performed using the monoclonal antibodies DO-7, for p53 and MIB-1, for ki67. Kaplan-Meier methodology was used, and a multivariate analysis using Cox's proportional hazards model was carried out in order to determine the variables associated with recurrence and progression. ROC curves were also drawn up.


RESULTS
The average follow up period was 8.55 years. 5 and 12-year recurrence-free survival rates were 57.98% and 48.47%. The independent variables for recurrence were histological grade, tumour multifocality, tumour size > 3 cm, presence of carcinoma in situ and ki67 expression. 5 and 12-year progression-free survival rates were 83.12% and 75.63%. The independent variables for progression were age, tumour multifocality, solid microscopic morphology, p53 expression and ki67 expression.


CONCLUSIONS
Solid microscopic pattern and p53 expression are the variables which best predict progression. A positive relationship was observed between p53 and progression: the greater the expression of p53, the greater the progression. Tumour multifocality and ki67 expression > 27% are the main prognostic factors for recurrence.
Rodríguez Alonso
A
A
Servicio de Urología, Hospital Arquitecto Marcide, El Ferrol La Coruña.
Pita Fernández
S
S
González-Carreró
J
J
Nogueira March
J L
JL
D000368:Aged; D014408:Biomarkers, Tumor / Q000032:analysis; D002295:Carcinoma, Transitional Cell / Q000737:chemistry / Q000453:epidemiology*; D015331:Cohort Studies; D018450:Disease Progression; D018572:Disease-Free Survival; D005260:Female; D006801:Humans; D019394:Ki-67 Antigen / Q000032:analysis; D015993:Life Tables; D008297:Male; D008875:Middle Aged; D015999:Multivariate Analysis; D009363:Neoplasm Proteins / Q000032:analysis; D009364:Neoplasm Recurrence, Local / Q000453:epidemiology*; D009367:Neoplasm Staging; D011379:Prognosis; D016016:Proportional Hazards Models; D011446:Prospective Studies; D012372:ROC Curve; D012189:Retrospective Studies; D012307:Risk Factors; D016019:Survival Analysis; D016159:Tumor Suppressor Protein p53 / Q000032:analysis; D001749:Urinary Bladder Neoplasms / Q000737:chemistry / Q000453:epidemiology*
D014408:Biomarkers, Tumor; D019394:Ki-67 Antigen; D009363:Neoplasm Proteins; D016159:Tumor Suppressor Protein p53