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Subcutaneously Administered Interleukin-12 Therapy in HIV-Infected Patients With Disseminated Mycobacterium Avium Complex Infection

Disseminated infection with Mycobacteria avium complex (MAC) is one of the most common systemic bacterial infections in advanced stages of the acquired immunodeficiency syndrome (AIDS). Current therapy for disseminated MAC infection in HIV patients consists of multidrug chemotherapy regimens are often accompanied by toxicities, and many patients become intolerant of one or more agents. Macrolides are the essential component of successful therapy, yet macrolide resistant strains are being recognized with increasing frequency. Thus, there is an interest in identifying additional therapeutic interventions for disseminated MAC in HIV-infected patients. Interleukin-12 (IL-12) is a central, regulatory cytokine in cell-mediated immunity. IL-12 enhances the cytolytic activity of cytotoxic T and NK cells, and induces interferon-gamma (IFN gamma) production from T and NK cells. This open-label Phase I study is designed to evaluate the safety and immunologic/microbiologic effects of interleukin-12 administration in HIV-infected patients with concomitant disseminated Mycobacterium avium (MAC) infection. Fifteen patients with documented disseminated MAC will be randomized to receive double-blinded placebo or escalating doses of IL-12 in addition to anti-MAC chemotherapy and standard anti-retroviral therapy for six weeks. IL-12 will be administered subcutaneously, with escalating doses every month over the dose range of 30 ng/kg, 100 ng/kg, and 300 ng/kg, or until an individual maximum tolerated dose (IMTD) is reached. Should a patient receive 2 consecutive blood cultures negative for MAC during the course of the study at a lower dose, then he/she will not be further dose escalated. Those patients receiving placebo after 6 weeks will be crossed over to receive the full treatment course of IL-12. Each new dose or dose escalation will take place on an inpatient basis. Once a patient is clinically stable at a dose, the patient will be maintained at that dose as an outpatient for the remainder of the month. Total IL-12 administration will not exceed 12 weeks, or 24 total doses.

Panoramica dello studio

Descrizione dettagliata

Disseminated infection with Mycobacteria avium complex (MAC) is one of the most common systemic bacterial infections in advanced stages of the acquired immunodeficiency syndrome (AIDS). Current therapy for disseminated MAC infection in HIV patients consists of multidrug chemotherapy regimens are often accompanied by toxicities, and many patients become intolerant of one or more agents. Macrolides are the essential component of successful therapy, yet macrolide resistant strains are being recognized with increasing frequency. Thus, there is an interest in identifying additional therapeutic interventions for disseminated MAC in HIV-infected patients. Interleukin-12 (IL-12) is a central, regulatory cytokine in cell-mediated immunity. IL-12 enhances the cytolytic activity of cytotoxic T and NK cells, and induces interferon-gamma (IFN gamma) production from T and NK cells. This open-label Phase I study is designed to evaluate the safety and immunologic/microbiologic effects of interleukin-12 administration in HIV-infected patients with concomitant disseminated Mycobacterium avium (MAC) infection or localized MAC infection. Fifteen patients with documented disseminated MAC will be randomized to receive double-blinded placebo or escalating doses of IL-12 in addition to anti-MAC chemotherapy and standard anti-retroviral therapy for six weeks. IL-12 will be administered subcutaneously, with escalating doses every month over the dose range of 30 ng/kg, 100 ng/kg, and 300 ng/kg, or until an individual maximum tolerated dose (IMTD) is reached. Should a patient receive 2 consecutive blood cultures negative for MAC during the course of the study at a lower dose, then he/she will not be further dose escalated. Likewise, patients with localized disease will not be further dose escalated if symptoms/evidence of localized infection resolve as assessed by the principal investigator. Those patients receiving placebo after 6 weeks will be crossed over to receive the full treatment course of IL-12. Each new dose or dose escalation will take place on an inpatient basis. Once a patient is clinically stable at a dose, the patient will be maintained at that dose as an outpatient for the remainder of the month. Total IL-12 administration will not exceed 12 weeks, or 24 total doses.

Tipo di studio

Interventistico

Iscrizione

15

Fase

  • Fase 1

Contatti e Sedi

Questa sezione fornisce i recapiti di coloro che conducono lo studio e informazioni su dove viene condotto lo studio.

Luoghi di studio

    • Maryland
      • Bethesda, Maryland, Stati Uniti, 20892
        • National Institute of Allergy and Infectious Diseases (NIAID)

Criteri di partecipazione

I ricercatori cercano persone che corrispondano a una certa descrizione, chiamata criteri di ammissibilità. Alcuni esempi di questi criteri sono le condizioni generali di salute di una persona o trattamenti precedenti.

Criteri di ammissibilità

Età idonea allo studio

  • Bambino
  • Adulto
  • Adulto più anziano

Accetta volontari sani

No

Sessi ammissibili allo studio

Tutto

Descrizione

Documented HIV infection (ELISA and Western blot positive).

18 years or older.

Clinically stable enough to travel to NIH and meet protocol schedule requirements.

Negative urine or serum pregnancy test within 14 days prior to study entry (for women of childbearing potential).

Patients should be receiving a combination of FDA approved antiretroviral drugs or expanded access antiretroviral therapy for at least two weeks prior to study entry. The exception would be that, in the opinion of the primary treating physician, this therapy would not likely provide benefit.

Greater than or equal to 1 positive blood culture or 1 positive culture from a normally sterile site (e.g. lymph node, bone marrow, etc.) for MAC within 6 weeks of study. The initial screening blood culture at the NIH must be positive.

The following lab values must be present at study entry:

Transaminases, alkaline phosphatase, total bilirubin less than or equal to 5x upper limit of normal range.

Serum creatinine less than or equal to 2.0 mg/ml.

Proteinuria less than or equal to positive 1.

Normal PT/PTT.

Granulocyte count greater than or equal to 750/cubic millimeter.

Hemoglobin greater than or equal to 8 gm/dL and platelet count greater than or equal to 75,000.

Fasting Blood glucose 1.25x upper normal limit (126 g/dl). (In persons with no history of diabetes.)

No malignancy other than Kaposi sarcoma. Patients with Kaposi sarcoma are eligible, but must not have received systemic therapy for KS.

No current life threatening AIDS related opportunistic infection other than disseminated MAC.

No evidence of active substance abuse according to the standard 8th floor clinic substance abuse assessment, which allows enrollment at the discretion of the principal investigator.

No patients exhibiting psychiatric disturbance or illness, which in the assessment of the protocol team may affect patient safety or compliance.

No significant cardiac, gastrointestinal, pulmonary, autoimmune, renal, or CNS disease which could interfere with patient safety.

No hypertension requiring anti-hypertensive therapy.

No pregnant or lactating patients, or any patient with an inability or unwillingness to use effective contraception.

Willingness to comply with current NIH Clinical Center guidelines concerning appropriate notification by an individual of current or ongoing sexual partners and/or needle-sharing partners regarding his or her HIV seropositivity and the risk of transmission of HIV infection.

Piano di studio

Questa sezione fornisce i dettagli del piano di studio, compreso il modo in cui lo studio è progettato e ciò che lo studio sta misurando.

Come è strutturato lo studio?

Dettagli di progettazione

  • Scopo principale: Trattamento

Collaboratori e investigatori

Qui è dove troverai le persone e le organizzazioni coinvolte in questo studio.

Pubblicazioni e link utili

La persona responsabile dell'inserimento delle informazioni sullo studio fornisce volontariamente queste pubblicazioni. Questi possono riguardare qualsiasi cosa relativa allo studio.

Studiare le date dei record

Queste date tengono traccia dell'avanzamento della registrazione dello studio e dell'invio dei risultati di sintesi a ClinicalTrials.gov. I record degli studi e i risultati riportati vengono esaminati dalla National Library of Medicine (NLM) per assicurarsi che soddisfino specifici standard di controllo della qualità prima di essere pubblicati sul sito Web pubblico.

Studia le date principali

Inizio studio

1 aprile 1998

Completamento dello studio

1 marzo 2000

Date di iscrizione allo studio

Primo inviato

3 novembre 1999

Primo inviato che soddisfa i criteri di controllo qualità

9 dicembre 2002

Primo Inserito (Stima)

10 dicembre 2002

Aggiornamenti dei record di studio

Ultimo aggiornamento pubblicato (Stima)

4 marzo 2008

Ultimo aggiornamento inviato che soddisfa i criteri QC

3 marzo 2008

Ultimo verificato

1 aprile 1999

Maggiori informazioni

Queste informazioni sono state recuperate direttamente dal sito web clinicaltrials.gov senza alcuna modifica. In caso di richieste di modifica, rimozione o aggiornamento dei dettagli dello studio, contattare register@clinicaltrials.gov. Non appena verrà implementata una modifica su clinicaltrials.gov, questa verrà aggiornata automaticamente anche sul nostro sito web .

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