Open-label phase I study of combination therapy with zidovudine and interferon-beta in patients with AIDS-related Kaposi's sarcoma: AIDS Clinical Trials Group Protocol 057. 1998

S Miles, and A Levine, and M Feldstein, and J Carden, and S Cabriallas, and S Marcus, and R Mitsuyasu, and P Gill
Division of Hematology-Oncology, UCLA Clinical AIDS Research and Education Center, UCLA School of Medicine, USA. smiles@medl.medsch.ucla.edu

The aim of this study was to identify a safe and tolerable dose of recombinant interferon-beta (IFN-beta) used in conjunction with a fixed dose of zidovudine in patients with early-stage, good-prognosis AIDS-related Kaposi's sarcoma. We conducted a phase I, dose-escalation controlled trial of 22.5, 45 of 90 million units of IFN-beta given by daily subcutaneous injection with 500 mg per day of oral zidovudine. At the time of this study, this was standard of care for HIV infection. Patients were sequentially enrolled at three medical centers. Tumor response, drug tolerance, antiviral studies and CD4 changes were assessed. Four patients were enrolled at each dose level, and escalation proceeded when at least four patients had tolerated two weeks of therapy without dose-limiting toxicity. ACTG Kaposi's sarcoma tumor response criteria were used to assess response. Fifteen patients were enrolled. The combination of IFN-beta and zidovudine was well tolerated, and the dose-limiting toxicities were local skin necrosis and systemic symptoms. Despite generally good prognostic characteristics, only two patients achieved a clinical complete response and three addition patients had stable disease for a prolonged period of time (range 24-44 weeks). There was no correlation between baseline CD4 cell counts and tumor response, nor between the antiviral effect of IFN-beta as measured by decreases in immune-complex dissociated p24 antigen and tumor response. Higher doses of IFN-beta did not result in more tumor responses or in greater antiviral activity. The maximum tolerated dose of IFN-beta in combination with 500 mg per day of zidovudine was 45 million units by subcutaneous injection per day. IFN-beta is well tolerated in patients with AIDS-related Kaposi's sarcoma when used in conjunction with zidovudine. However, the antitumor response rate in good-prognosis patients is low. Further studies of this agent should be in the context of four-drug antiretroviral regimens where viral suppression is greatest and any antitumor activity of IFN-beta may be observed.

UI MeSH Term Description Entries
D004305 Dose-Response Relationship, Drug The relationship between the dose of an administered drug and the response of the organism to the drug. Dose Response Relationship, Drug,Dose-Response Relationships, Drug,Drug Dose-Response Relationship,Drug Dose-Response Relationships,Relationship, Drug Dose-Response,Relationships, Drug Dose-Response
D004359 Drug Therapy, Combination Therapy with two or more separate preparations given for a combined effect. Combination Chemotherapy,Polychemotherapy,Chemotherapy, Combination,Combination Drug Therapy,Drug Polytherapy,Therapy, Combination Drug,Chemotherapies, Combination,Combination Chemotherapies,Combination Drug Therapies,Drug Polytherapies,Drug Therapies, Combination,Polychemotherapies,Polytherapies, Drug,Polytherapy, Drug,Therapies, Combination Drug
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000964 Antimetabolites, Antineoplastic Antimetabolites that are useful in cancer chemotherapy. Antineoplastic Antimetabolites
D012514 Sarcoma, Kaposi A multicentric, malignant neoplastic vascular proliferation characterized by the development of bluish-red cutaneous nodules, usually on the lower extremities, most often on the toes or feet, and slowly increasing in size and number and spreading to more proximal areas. The tumors have endothelium-lined channels and vascular spaces admixed with variably sized aggregates of spindle-shaped cells, and often remain confined to the skin and subcutaneous tissue, but widespread visceral involvement may occur. Kaposi's sarcoma occurs spontaneously in Jewish and Italian males in Europe and the United States. An aggressive variant in young children is endemic in some areas of Africa. A third form occurs in about 0.04% of kidney transplant patients. There is also a high incidence in AIDS patients. (From Dorland, 27th ed & Holland et al., Cancer Medicine, 3d ed, pp2105-7) HHV-8 is the suspected cause. Kaposi Sarcoma,Kaposi's Sarcoma,Multiple Idiopathic Pigmented Hemangiosarcoma,Kaposis Sarcoma,Sarcoma, Kaposi's
D015215 Zidovudine A dideoxynucleoside compound in which the 3'-hydroxy group on the sugar moiety has been replaced by an azido group. This modification prevents the formation of phosphodiester linkages which are needed for the completion of nucleic acid chains. The compound is a potent inhibitor of HIV replication, acting as a chain-terminator of viral DNA during reverse transcription. It improves immunologic function, partially reverses the HIV-induced neurological dysfunction, and improves certain other clinical abnormalities associated with AIDS. Its principal toxic effect is dose-dependent suppression of bone marrow, resulting in anemia and leukopenia. AZT (Antiviral),Azidothymidine,3'-Azido-2',3'-Dideoxythymidine,3'-Azido-3'-deoxythymidine,AZT Antiviral,AZT, Antiviral,BW A509U,BWA-509U,Retrovir,3' Azido 2',3' Dideoxythymidine,3' Azido 3' deoxythymidine,Antiviral AZT,BWA 509U,BWA509U
D015658 HIV Infections Includes the spectrum of human immunodeficiency virus infections that range from asymptomatic seropositivity, thru AIDS-related complex (ARC), to acquired immunodeficiency syndrome (AIDS). HTLV-III Infections,HTLV-III-LAV Infections,T-Lymphotropic Virus Type III Infections, Human,HIV Coinfection,Coinfection, HIV,Coinfections, HIV,HIV Coinfections,HIV Infection,HTLV III Infections,HTLV III LAV Infections,HTLV-III Infection,HTLV-III-LAV Infection,Infection, HIV,Infection, HTLV-III,Infection, HTLV-III-LAV,Infections, HIV,Infections, HTLV-III,Infections, HTLV-III-LAV,T Lymphotropic Virus Type III Infections, Human
D016899 Interferon-beta One of the type I interferons produced by fibroblasts in response to stimulation by live or inactivated virus or by double-stranded RNA. It is a cytokine with antiviral, antiproliferative, and immunomodulating activity. Interferon, Fibroblast,beta-Interferon,Fiblaferon,Interferon, beta,Interferon, beta-1,Interferon-beta1,beta-1 Interferon,Fibroblast Interferon,Interferon beta,Interferon beta1,Interferon, beta 1,beta 1 Interferon,beta Interferon
D019380 Anti-HIV Agents Agents used to treat AIDS and/or stop the spread of the HIV infection. These do not include drugs used to treat symptoms or opportunistic infections associated with AIDS. AIDS Drug,AIDS Drugs,Anti-AIDS Agents,Anti-AIDS Drug,Anti-HIV Agent,Anti-HIV Drug,Anti-AIDS Drugs,Anti-HIV Drugs,Agent, Anti-HIV,Agents, Anti-AIDS,Agents, Anti-HIV,Anti AIDS Agents,Anti AIDS Drug,Anti AIDS Drugs,Anti HIV Agent,Anti HIV Agents,Anti HIV Drug,Anti HIV Drugs,Drug, AIDS,Drug, Anti-AIDS,Drug, Anti-HIV,Drugs, AIDS,Drugs, Anti-AIDS,Drugs, Anti-HIV

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