Ovarian metastatic antigen in the blood serum of patients with ovarian tumors

: Enzyme immunoassays of ovarian metastatic antigen 8 (OMA-8) in sera of patients with ovarian cancer have shown its elevation in 74.5% of samples. OMA-8 levels did not correlate with histology, differentiation, clinical stage of the tumour or the presence of ascites. Increased OMA-8 levels in sera of 70% of patients with stage I-II ovarian cancer suggest that it may be a marker of this disease.