Thirty consecutive patients with the acquired immune deficiency syndrome were treated with intramuscular human lymphoblastoid interferon for Kaposi's sarcoma. Patients were divided Into three groups receiving 7.5 million units/m2 per day, 15 million units/m2 per day, or 25 million units/m2 per day for 28 days. Because of dose-limiting toxicity in the highest dose group, all patients received between 6 and 15 million units/m2 per day. There were three partial responses and four minor responses. The responses were not dependent on drug dose, but did correlate with higher total lymphocyte and OKT4-positive lymphocyte numbers and absence of prior opportunistic infection. Patients who had endogenous acid-labile alpha-interferon prior to therapy were more likely to have progressive disease during interferon administration.
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