Serum immunosuppressive acidic protein (IAP) in patients with malignant head and neck tumors

Measurements were carried out on the serum immunosuppressive acidic protein (IAP) level of patients with malignant head and neck tumors. The serum IAP value in patients with malignancies was significantly higher than that in healthy subjects and those with benign tumors. Following treatment, in cases with favorable progress the high IAP values prior to treatment showed a decline, becoming normal. Whereas in cases showing poor progress, there was a delay in reverting to normal values and some were observed to retain the same high values.