Background/aim: To compare serum chromogranin A (CgA) and insulin-like growth factor 1 (IGF-1) with the classical prostate-specific antigen (PSA) marker in clinically localized prostate adenocarcinomas.
Materials and methods: This is a prospective single-center study that included 64 consecutive men with newly diagnosed clinically localized prostate adenocarcinoma and 20 consecutive men with histologically confirmed benign prostatic hyperplasia (BPH). A blood sample for the determination of serum total PSA, CgA and IGF-1 levels (RIA) was obtained from all cases. Analysis of variance was performed to evaluate their variations according to disease and the pathological characteristics of prostate adenocarcinoma.
Results: Only serum PSA levels (p < 0.0001) and not IGF-1 (p = 0.5475) or CgA (p = 0.5043) were significantly higher in the prostate cancer (PCa) group as compared to the BPH group. A significant variance between BPH and PCa divided on the basis of pT stage was found for PSA levels (p < 0.0001) but not for CgA (p = 0.0869) and IGF-1 (p = 0.6883) levels. Dividing PCa on the basis of Gleason score, a significant variance was found for CgA (p = 0.0100) and for PSA (p < 0.001), but not for IGF-1 (p = 0.6895) levels.
Conclusions: In our population the quantification of PSA and CgA serum levels and not of IGF-1 provides independent significant information in the diagnosis and aggressiveness of PCa, respectively.
(c) 2008 S. Karger AG, Basel.