Survival Markers Related to Bone Metastases in Prostate Cancer

• Published in: Anticancer research Vol. 26; no. 6C; pp. 4879 - 4884
• Main Authors: SALMINEN, E. K, KALLIOINEN, M. J, ALA-HOUHALA, M. A, VIHINEN, P. P, TIITINEN, S. L, VARPULA, M, VAHLBERG, T. J
• Format: Journal Article
• Language: English
• Published: Attiki International Institute of Anticancer Research 01.11.2006
• Subjects: Acid Phosphatase - blood; Aged; Aged, 80 and over; Alkaline Phosphatase - blood; Biological and medical sciences; Biomarkers, Tumor - blood; Bone Neoplasms - blood; Bone Neoplasms - enzymology; Bone Neoplasms - secondary; Cross-Sectional Studies; Diseases of the osteoarticular system; Humans; Isoenzymes - blood; Male; Matrix Metalloproteinase 2 - blood; Matrix Metalloproteinase 9 - blood; Medical sciences; Middle Aged; Prostate-Specific Antigen - blood; Prostatic Neoplasms - blood; Prostatic Neoplasms - enzymology; Prostatic Neoplasms - pathology; ROC Curve; Tartrate-Resistant Acid Phosphatase; Tumors; Tumors of striated muscle and skeleton; Urinary system disease; Prostate disease; tALP; Enzyme; Diseases of the osteoarticular system; Biological marker; Metalloendopeptidases; Malignant tumor; Survival; Peptidases; MMP; Bone metastasis; Cancerology; bone metastases; Hydrolases; TRACP 5b; Male genital diseases; Prostate cancer
• ISSN: 0250-7005; 1791-7530

Prognostic value of a bone resorption marker, tartrate-resistant acid phosphatase isoform 5b (TRACP 5b), and two matrix metalloproteinases (MMP-2 and MMP-9) was compared with the standard clinical analyses of total alkaline phosphatase (tALP) and prostate-specific antigen (PSA), in prostate cancer (PC) patients with (BM+) or without (BM-) bone metastases. Diagnostic accuracy evaluation showed the highest area under the curve for tALP (AUC=0.98), followed by PSA (AUC=0.87), TRACP 5b (AUC=0.82), MMP-9 (AUC=0.62) and MMP-2 (AUC=0.53). Significantly shorter survival was observed for patients with tALP (p<0.001), TRACP 5b (p=0.002) and PSA (p<0.001) levels, above the determined cut-off values compared with lower marker levels. In multivariate Cox regression analysis, only tALP and PSA, in addition to Gleason score were independent prognostic factors for survival. Of the three novel markers tested, only TRACP 5b proved to be predictive of survival in PC with bone metastases. MMP-2 and -9 are thus not recommended for further studies in this context.