Aim: Prostate cancer (PCa) is the second most prevalent male cancer worldwide and designated the sixth most frequent male cancer in Arab countries. Although prostate specific antigen (PSA) has become the best and most valuable biomarker for screening of PCa, elevated levels of PSA can reflect the presence of malignant cells but can overlap with benign prostatic diseases. There is a necessity to develop and improve current tools for early detection and diagnosis of PCa. This study was done to

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... luate the validation of serum insulin-like growth factor-1 (IGF-1), IGF binding protein-3 (IGFBP-3), chromogranin A (CgA) and combination with PSA in treatment of benign prostatic hyperplasia (BPH) and PCa patients. Methods: The study included 72 patients with PCa, 70 BPH patients and 56 healthy male subjects of matched age. Full history and clinical data were recorded for all subjects. Results: Serum PSA attained sensitivity of 84% at 82% specificity with an accuracy of 83%, although IGF-1, IGFBP-3 and CgA did not recognize PCa patients. Conclusion: Combinations of IGF-1 and IGFBP-3 biomarkers with PSA were effectively differentiated between PCa and control groups as well as improving the overall value of sensitivity, specificity and diagnostic accuracy of PCa to 85% and 86% for IGF-1/PSA and IGFP-3/PSA respectively. ABSTRACT Article history: