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Perturbing of HIV Reservoir With Immune Stimulation

3 de agosto de 2022 actualizado por: David Smith, University of California, San Diego

Perturbing the HIV Reservoir With Immune Stimulation

The purpose of this study is to determine the impact of Pneumococcus and Influenza vaccines on the HIV transcriptional activity in individuals who are virologically suppressed for at least 48 weeks on similar ART. The proposed study is a randomized double-blinded control trial conducted over 28 weeks. Randomized interventions will be injections of Influenza vaccine, Pneumococcal vaccine, and Placebo. Each participant will receive each injection but in a randomized order.

Descripción general del estudio

Estado

Terminado

Condiciones

Descripción detallada

Title: Perturbing the HIV Reservoir

Sample Size: 56

Study Population: HIV-infected individuals between 18 and 65 years old who started similar antiretroviral therapy (ART) during chronic infection and remained virally suppressed for at least 48 weeks before enrollment. Participants will have CD4 >250 cells/μl at enrollment and a CD4 nadir >100 cells/μl.

Participating Sites: UCSD's Antiviral Research Center (AVRC)

Study Design: The proposed study is a randomized double-blinded control trial conducted over 28 weeks. Randomized interventions will be injections of Influenza vaccine, Pneumococcal vaccine, and Placebo. Each participant will receive each injection but in a randomized order.

Schedule of Evaluations: Study evaluations will be based on three 30 day cycles (Influenza vaccine, Pneumococcus vaccine, Placebo in random order) over 28 weeks of the RCT. Pre injection: one paired blood and genital secretion sample will be collected before each injection. Post-injection: paired blood and genital secretion samples will be collected on days 2, 4, 7, 14 and 30 after each injection.

Study Duration: 240 weeks

Study Regimen/Intervention: This is a double blind RCT of two vaccines (Pneumovax®23 and Fluarix®) plus placebo (sterile saline injection). Study participants will be followed for 28 weeks after enrollment. During this 28-week period, blood and genital secretion samples will be collected on day 0 and five subsequent time points after each injection (days 2, 4, 7, 14 and 30). Injections (vaccine or placebo) will be administered 12 weeks apart and in a random order, to minimize a possible bias due to the order of the vaccines.

Primary Objective: To determine the impact of Pneumococcus and Influenza vaccines on the HIV transcriptional activity in individuals who are virologically suppressed for at least 48 weeks on similar ART.

Primary Outcome: Average level of CD4+ T cell-associated HIV RNA transcription measured at days 2, 4, 7, 14 and 30 after each injection.

Tipo de estudio

Intervencionista

Inscripción (Actual)

54

Fase

  • No aplica

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

    • California
      • San Diego, California, Estados Unidos, 92103-8208
        • UCSD AntiViral Research Center (AVRC)

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

18 años a 65 años (Adulto, Adulto Mayor)

Acepta Voluntarios Saludables

No

Géneros elegibles para el estudio

Todos

Descripción

Inclusion Criteria

  1. Documented HIV-1 infection more than 365 days ago (HIV antibody or viral load positive).
  2. Capable of signing written informed consent.
  3. Documented viral s suppression for at least 48 weeks (≤50 copies/mL)
  4. Men and women between 18 and 65 years of age.
  5. Read and comprehend English.
  6. Documented CD4 count at enrollment (>250 cells/µl)
  7. Reported CD4 nadir >100 cells/µl.
  8. Received seasonal flu vaccination at least 6 weeks prior to first trial injection (and not more recently)
  9. Received vaccination for pneumococcal disease at least 12 months prior to first trial injection (and not more recently)
  10. Started ART during chronic infection (> 6 months from estimated date of injection)

Exclusion Criteria

  1. Uncontrolled psychiatric condition.
  2. Under the influence of drug(s) or alcohol at time of screening.
  3. Any condition that, in the opinion of the investigator, would limit follow-up and adequate consent.
  4. History of allergic reactions to any of the proposed vaccines or egg allergy.
  5. History of Gullian Barre syndrome
  6. Receiving immunosuppressive medications.
  7. Pregnancy or lactation.

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: Ciencia básica
  • Asignación: Aleatorizado
  • Modelo Intervencionista: Asignación paralela
  • Enmascaramiento: Triple

Armas e Intervenciones

Grupo de participantes/brazo
Intervención / Tratamiento
Otro: Pneumococcal, then Influenza, then Placebo vaccination
Participants first received a 0.5 mL injection of Pneumococcal vaccine (Pneumovax-23®). After a washout period of at least 6 weeks, they then received a 0.5 mL injection of Influenza vaccine (Fluarix®, GSK). After another washout period of at least 6 weeks, the participant received a 0.5 mL injection of saline (placebo).
Intramuscular injection with Fluarix® .
Intramuscular injection with Pneumovax.
Intramuscular injection with sterile saline (placebo).
Otro: Pneumococcal, then Placebo, then Influenza vaccination
Participants first received a 0.5 mL injection of Pneumococcal vaccine (Pneumovax-23®). After a washout period of at least 6 weeks, they then received a 0.5 mL injection of saline (placebo). After another washout period of at least 6 weeks, the participant received a 0.5 mL injection of Influenza vaccine (Fluarix®, GSK).
Intramuscular injection with Fluarix® .
Intramuscular injection with Pneumovax.
Intramuscular injection with sterile saline (placebo).
Otro: Influenza, then Pneumococcal, then Placebo vaccination
Participants first received a 0.5 mL injection of Influenza vaccine (Fluarix®, GSK). After a washout period of at least 6 weeks, they then received a 0.5 mL injection of Pneumococcal vaccine (Pneumovax-23®). After another washout period of at least 6 weeks, the participant received a 0.5 mL injection of saline (placebo).
Intramuscular injection with Fluarix® .
Intramuscular injection with Pneumovax.
Intramuscular injection with sterile saline (placebo).
Otro: Influenza, then Placebo, then Pneumococcal vaccination
Participants first received a 0.5 mL injection of Influenza vaccine (Fluarix®, GSK). After a washout period of at least 6 weeks, they then received a 0.5 mL injection of saline (placebo). After another washout period of at least 6 weeks, the participant received a 0.5 mL injection of Pneumococcal vaccine (Pneumovax-23®).
Intramuscular injection with Fluarix® .
Intramuscular injection with Pneumovax.
Intramuscular injection with sterile saline (placebo).
Otro: Placebo, then Pneumococcal, then Influenza vaccination
Participants first received a 0.5 mL injection of saline (placebo). After a washout period of at least 6 weeks, they then received a 0.5 mL injection of Pneumococcal vaccine (Pneumovax-23®). After another washout period of at least 6 weeks, the participant received a 0.5 mL injection of Influenza vaccine (Fluarix®, GSK).
Intramuscular injection with Fluarix® .
Intramuscular injection with Pneumovax.
Intramuscular injection with sterile saline (placebo).
Otro: Placebo, then Influenza, then Pneumococcal vaccination
Participants first received a 0.5 mL injection of saline (placebo). After a washout period of at least 6 weeks, they then received a 0.5 mL injection of Influenza vaccine (Fluarix®, GSK). After another washout period of at least 6 weeks, the participant received a 0.5 mL injection of Pneumococcal vaccine (Pneumovax-23®).
Intramuscular injection with Fluarix® .
Intramuscular injection with Pneumovax.
Intramuscular injection with sterile saline (placebo).

¿Qué mide el estudio?

Medidas de resultado primarias

Medida de resultado
Medida Descripción
Periodo de tiempo
Change From Vaccination (Day 0) in Mean CD4+ T Cell-associated HIV RNA Transcription at Day 7
Periodo de tiempo: Day 0 and Day 7
CD4+ T cell-associated HIV RNA was measured before vaccination on Day 0 and again on Day 7. The Day-0 measure of CD4+ T cell-associated HIV RNA transcription was subtracted from the Day-7 measure.
Day 0 and Day 7

Colaboradores e Investigadores

Aquí es donde encontrará personas y organizaciones involucradas en este 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 (Actual)

1 de agosto de 2016

Finalización primaria (Actual)

1 de abril de 2020

Finalización del estudio (Actual)

1 de enero de 2022

Fechas de registro del estudio

Enviado por primera vez

23 de febrero de 2016

Primero enviado que cumplió con los criterios de control de calidad

8 de marzo de 2016

Publicado por primera vez (Estimar)

14 de marzo de 2016

Actualizaciones de registros de estudio

Última actualización publicada (Actual)

24 de agosto de 2022

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

3 de agosto de 2022

Última verificación

1 de agosto de 2022

Más información

Términos relacionados con este estudio

Otros números de identificación del estudio

  • 160089
  • 1R01AI118422-01A1 (Subvención/contrato del NIH de EE. UU.)

Plan de datos de participantes individuales (IPD)

¿Planea compartir datos de participantes individuales (IPD)?

NO

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. .

Ensayos clínicos sobre VIH

Ensayos clínicos sobre Fluarix

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