Esta página se tradujo automáticamente y no se garantiza la precisión de la traducción. por favor refiérase a versión inglesa para un texto fuente.

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.

Descripción general del estudio

Descripción detallada

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 de estudio

Intervencionista

Inscripción

15

Fase

  • Fase 1

Contactos y Ubicaciones

Esta sección proporciona los datos de contacto de quienes realizan el estudio e información sobre dónde se lleva a cabo este estudio.

Ubicaciones de estudio

    • Maryland
      • Bethesda, Maryland, Estados Unidos, 20892
        • National Institute of Allergy and Infectious Diseases (NIAID)

Criterios de participación

Los investigadores buscan personas que se ajusten a una determinada descripción, denominada criterio de elegibilidad. Algunos ejemplos de estos criterios son el estado de salud general de una persona o tratamientos previos.

Criterio de elegibilidad

Edades elegibles para estudiar

  • Niño
  • Adulto
  • Adulto Mayor

Acepta Voluntarios Saludables

No

Géneros elegibles para el estudio

Todos

Descripción

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.

Plan de estudios

Esta sección proporciona detalles del plan de estudio, incluido cómo está diseñado el estudio y qué mide el estudio.

¿Cómo está diseñado el estudio?

Detalles de diseño

  • Propósito principal: Tratamiento

Colaboradores e Investigadores

Aquí es donde encontrará personas y organizaciones involucradas en este estudio.

Publicaciones y enlaces útiles

La persona responsable de ingresar información sobre el estudio proporciona voluntariamente estas publicaciones. Estos pueden ser sobre cualquier cosa relacionada con el estudio.

Fechas de registro del estudio

Estas fechas rastrean el progreso del registro del estudio y los envíos de resultados resumidos a ClinicalTrials.gov. Los registros del estudio y los resultados informados son revisados ​​por la Biblioteca Nacional de Medicina (NLM) para asegurarse de que cumplan con los estándares de control de calidad específicos antes de publicarlos en el sitio web público.

Fechas importantes del estudio

Inicio del estudio

1 de abril de 1998

Finalización del estudio

1 de marzo de 2000

Fechas de registro del estudio

Enviado por primera vez

3 de noviembre de 1999

Primero enviado que cumplió con los criterios de control de calidad

9 de diciembre de 2002

Publicado por primera vez (Estimar)

10 de diciembre de 2002

Actualizaciones de registros de estudio

Última actualización publicada (Estimar)

4 de marzo de 2008

Última actualización enviada que cumplió con los criterios de control de calidad

3 de marzo de 2008

Última verificación

1 de abril de 1999

Más información

Esta información se obtuvo directamente del sitio web clinicaltrials.gov sin cambios. Si tiene alguna solicitud para cambiar, eliminar o actualizar los detalles de su estudio, comuníquese con register@clinicaltrials.gov. Tan pronto como se implemente un cambio en clinicaltrials.gov, también se actualizará automáticamente en nuestro sitio web. .

Suscribir