Serum AMDL DR-70 levels: a new concept in the diagnosis and follow-up of colorectal carcinoma.

The purpose of this study was to determine the diagnostic potential of DR-70 assay in patients with colorectal cancer and to investigate the relationship between serum DR-70 levels and the biological characteristic of the tumor. The experimental group included patients who were diagnosed with colorectal adenocarcinoma after biopsy specimen. The control group of this study consisted of patients whose total colonoscopy was reported as normal. Serum levels of DR-70 was found to be significantly higher in patients with colorectal cancer than healthy participants (p = 0.001). Receiver operating curve analyses indicated a cut-off value of 1.69 μg/ml for serum DR-70 levels. Stage of the disease, grade of the tumor, number of metastatic lymph nodes and microsatellite instability status were significantly related to serum DR-70 levels (p = 0.001, p = 0.001, p = 0.001 and p = 0.002, respectively). It can be concluded that serum levels of DR-70 can be regarded as an indicator for the diagnosis of colorectal cancer.