Effect of Interferon alpha-2a malignant mesothelioma

T.I. Christmas, L.S. Manning, M.J. Garlepp, A.W. Musk, Bruce Robinson

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    Malignant mesothelioma (MM) is a tumor that is resistant to conventional therapy. Interferon-alpha (IFN-alpha) has been used in the treatment of some human tumors, and we have previously demonstrated an in vitro anti-proliferative effect of IFN against MM cell lines. Therefore, the effect of recombinant human IFN-alpha (IFN-alpha2a) (Roferon-A, Hoffmann-La Roche) on previously untreated patients with MM has been studied. Twenty-five patients (24 male and 1 female), with a mean age of 59 +/- 9.9 years, were treated for 3 months with IFN-alpha2a. The starting dose was 3 x 10(6) IU daily increasing to a maximum of 18 x 10(6) IU daily or as tolerated. All patients had measurable tumor on thoracic CT prior to commencement. CT scans were performed at 6 and 12 weeks to determine tumor response. Twenty patients completed 3 months of treatment. Five patients were withdrawn because of disease progression. Side effects were predictable and dose related. Dose reductions were necessary in 12 patients for grade 2 toxicity. One patient had a complete response (CR), 2 patients had partial responses (PR) (response rate = 12%), 13 (52%) patients remained stable, 1 of whom exhibited a delayed PR, and 9 (36%) had progressive disease. These data suggest that IFN-alpha2a is well tolerated in patients with MM and is active against MM in a proportion of patients.
    Original languageEnglish
    Pages (from-to)9-12
    JournalJournal of Interferon Research
    Publication statusPublished - 1992


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