These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: Usefulness of alpha1-antichymotrypsin-PSA complex for predicting bone metastases of prostate cancer.
    Author: Kikuchi E, Nakashima J, Ishibashi M, Ohigashi T, Oya M, Nakagawa K, Miyajima A, Murai M.
    Journal: Urology; 2006 Aug; 68(2):371-5. PubMed ID: 16904455.
    Abstract:
    OBJECTIVES: To determine the usefulness of alpha1-antichymotrypsin-prostate-specific antigen (PSA) complex (PSA-ACT)-based parameters in predicting bone metastasis in patients with prostate cancer. METHODS: PSA-ACT, total PSA, free PSA, their volume-adjusted values, and alkaline phosphatase were evaluated in 220 consecutive patients with newly diagnosed prostate cancer. RESULTS: Bone metastases were detected by bone scan in 27 (12.3%) of the 220 patients. The serum levels of PSA-ACT, total PSA, free PSA, PSA density, PSA adjusted for transition zone volume, PSA-ACT density, PSA-ACT adjusted for transition zone volume, alkaline phosphatase, PSA-ACT/PSA ratio, and Gleason score in patients with bone metastases were each significantly greater than in those without bone metastases. On receiver operating characteristic analyses, PSA-ACT had the greatest area under the curve (0.88), but the receiver operating characteristic curve demonstrated that the sensitivity and specificity of PSA-ACT were marginally better than those of total PSA at only a few selected cutoff points. At a sensitivity of 93% (2 patients with bone metastasis missed), unnecessary bone scans would have been avoided in 107 and 102 patients using a PSA-ACT cutoff value of 10 ng/mL and total PSA cutoff value of 11.5 ng/mL, respectively. Multivariate logistic regression analysis demonstrated that PSA-ACT and Gleason score were significant independent predictors of bone metastasis. CONCLUSIONS: PSA-ACT is as useful as total PSA for identifying patients with a low probability of having bone metastasis. PSA-ACT could replace PSA for predicting negative bone scans in a clinical setting in which PSA-ACT is used for monitoring and screening patients for prostate cancer.
    [Abstract] [Full Text] [Related] [New Search]