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

March 3, 2008 updated by: National Institute of Allergy and Infectious Diseases (NIAID)
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.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

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.

Study Type

Interventional

Enrollment

15

Phase

  • Phase 1

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United States
    • Maryland
      • Bethesda, Maryland, United States, 20892
        • National Institute of Allergy and Infectious Diseases (NIAID)

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Child
  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

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.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

National Institute of Allergy and Infectious Diseases (NIAID)

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

April 1, 1998

Study Completion

March 1, 2000

Study Registration Dates

First Submitted

November 3, 1999

First Submitted That Met QC Criteria

December 9, 2002

First Posted (Estimate)

December 10, 2002

Study Record Updates

Last Update Posted (Estimate)

March 4, 2008

Last Update Submitted That Met QC Criteria

March 3, 2008

Last Verified

April 1, 1999

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 980091
  • 98-I-0091

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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