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[Detection rate of MAGE-A1-A6 mRNA in the peripheral blood of cancer patients].

The mRNA expression of 6 MAGE-A (MAGE-A1-A6) antigens by the tumor focal cells and cancer cells circulating in blood was studied in solid malignant and benign neoplasms. MAGE- A1-A6 mRNA expression was detected in the tumor focal cells in more than 90% of cases of cancer of the breast, lung, and stomach and melanoma cell lines. The detection rate of peripheral blood MAGE-A1-A6-positive tumor cells was 95% in lung cancer, 53% in corpus uteri cancer, 67% in gastric cancer, 63% in breast cancer, 33% in melanoma, and 42% in uterine myoma. MAGE-A3 and MAGE-A4 mRNA expression was more commonly observed.