Representative interferon-stimulated gene products were quantified in the serum of 10 patients with cutaneous metastatic melanoma after one month of daily injections with IFN-β1a at a dose of 12 × 106 IU/m2 on days 1–14 and 18 × 106 IU/m2 on days 15–29. Here, IFNA1 is linked to metastatic melanoma.