Phase II evaluation of recombinant interferon-beta (IFN-beta ser) in patients with diffuse mesothelioma: a Southwest Oncology Group study.

Fourteen evaluable patients with diffuse malignant mesothelioma were treated with a once-a-day for 5 days out of 7 for 6 weeks regimen of recombinant interferon-beta (IFN-beta ser). No responses were noted. The major toxicities included fever, chills, nausea, vomiting, and anorexia. IFN-beta ser at this dose and schedule does not appear to be an active single agent for patients with refractory malignant mesothelioma.