Article (Scientific journals)
Prognostic Value of Bone Sialoprotein Expression in Clinically Localized Human Prostate Cancer
Waltregny, David; Bellahcene, Akeila; Van Riet, Ivan et al.
1998In Journal of the National Cancer Institute, 90 (13), p. 1000-8
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Abstract :
[en] BACKGROUND: Bone sialoprotein (BSP), a bone matrix protein, was recently found to be expressed ectopically in breast cancer and to have a statistically significant association with poor prognosis and the development of bone metastases in that disease. These data prompted us to investigate whether BSP might also be expressed in human prostate cancer, which often metastasizes to bone, and be predictive for progression risk. METHODS: Tissue sections from 180 patients who had undergone a radical prostatectomy for localized prostate cancer were analyzed immunohistochemically for BSP expression. Biochemical progression was defined as an increasing serum prostate-specific antigen level of 0.5 ng/mL or more. Statistical analysis was used to assess associations between pathologic findings and level of BSP expression, and a Cox proportional hazards model was used to determine which clinical and histologic parameters, including stage, Gleason score, and BSP expression (immunostaining intensity and extent), were independently associated with biochemical progression. All P values were two-sided. RESULTS: Most of the prostate cancer lesions examined (78.9%) expressed detectable levels of BSP, compared with no or low expression in the adjacent normal glandular tissue. A statistically significant association was found between BSP expression and biochemical progression in both univariate and multivariate analyses. After a follow-up interval of 3 years, the biochemical relapse rate was 36.7% (95% confidence interval [CI] = 23.4%-47.7%) in patients whose tumors expressed high levels of BSP compared with 12.1% (95% CI = 2.3%-20.8%) in patients whose tumors expressed no or a low detectable level of the protein (logrank test, P = .0014). BSP expression status could identify those patients at higher risk of biochemical progression (logrank test, P<.05) among patients with moderately differentiated tumors or with pathologically confined tumors. CONCLUSIONS: To our knowledge, this study is the first to demonstrate BSP expression in human prostate cancer and to highlight the protein's statistically significant prognostic value in patients with clinically confined prostate adenocarcinomas.
Disciplines :
Urology & nephrology
Author, co-author :
Waltregny, David  ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Labo de recherche sur les métastases
Bellahcene, Akeila ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Labo de recherche sur les métastases
Van Riet, Ivan
Fisher, Larry W
Young, Marianne
Fernandez, Pedro
Dewé, Walthère ;  Université de Liège - ULiège > Analyse des médicaments
de Leval, Jean ;  Université de Liège - ULiège > Département des sciences cliniques > Urologie
Castronovo, Vincenzo ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Biologie générale et cellulaire
Language :
English
Title :
Prognostic Value of Bone Sialoprotein Expression in Clinically Localized Human Prostate Cancer
Publication date :
01 July 1998
Journal title :
Journal of the National Cancer Institute
ISSN :
0027-8874
eISSN :
1460-2105
Publisher :
Oxford University Press, United Kingdom
Volume :
90
Issue :
13
Pages :
1000-8
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 24 January 2009

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