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Comparison of Immune Response to Booster Vaccines in Blood Transplant Patients and Healthy Volunteers

Evaluation of Hepatitis B Surface Antigen-Specific and Tetanus Toxoid-Specific Lymphocytes

This study will compare the immune system response to booster vaccines for tetanus/diphtheria and hepatitis B in healthy volunteers with that of patients who have had a blood transplant. (A blood transplant is an infusion of donated stem cells-i.e., cells that mature into white blood cells, red blood cells and platelets). The study will also look at how age of the blood cell donor and recipient, the type of blood transplant, the amount of certain types of white cells in donor blood, and other variables may influence the vaccine response among the transplant patients.

This study includes normal volunteers and patients who have had a blood transplant. Healthy volunteers between the ages of 18 and 60 who have previously been vaccinated with the hepatitis B or tetanus/diphtheria vaccine and have not had hepatitis B may be eligible for this study. Patients enrolled in a blood cell transplant study at NIH who are between 5 and 60 years old, have been vaccinated against tetanus/diphtheria, and have not had hepatitis B may be eligible. Candidates will be screened with a medical history and blood tests.

Those enrolled in the study will have about 2 tablespoons of blood drawn before vaccination with a standard tetanus/diphtheria booster shot. Volunteers who have previously been vaccinated with the hepatitis B vaccine and all blood transplant patients will also receive a hepatitis B vaccination. Participants will have blood drawn (from 1 to 5 tablespoons) up to once a week after vaccination for no more than 8 weeks to evaluate the immune response to vaccination.

Descripción general del estudio

Descripción detallada

This study will compare booster vaccine responses in patients undergoing hematopoietic stem cell transplant (HSCT) to a group of healthy volunteers. Responses among different types of HSCT will be compared to each other as well. Serum antibody titers to vaccine antigens and quantification of antigen specific lymphocytes will be followed. Approximately 15 healthy subjects and 40 patients will be enrolled.

Tipo de estudio

De observación

Inscripción

55

Contactos y Ubicaciones

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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

Sí

Géneros elegibles para el estudio

Todos

Descripción

HEALTHY VOLUNTEERS:

Male or female subjects who are at least 18 years of age, but no older than 60 years of age.

Received complete hepatitis B and/or tetanus/diphtheria vaccination series.

If female, have a negative urine or serum pregnancy test within two weeks prior to entry into this study, and agree to avoid pregnancy during entire participation through the use of effective birth control or abstinence.

Volunteers reporting good general health and denying any illness that can adversely affect an immune response to a vaccine.

No history of a serious adverse event associated with any previous vaccination.

Not participating in another experimental vaccine study.

Serum hemoglobin greater than or equal to 11 g/dL.

No history of hepatitis B.

Must not have received a tetanus/diphtheria or hepatitis B booster in the last 6 months.

HSCT VOLUNTEERS:

Male or female subjects who are at least 5 years of age, but no older than 60 years of age.

Be enrolled in a HSCT protocol at NIH.

Be greater than or equal to 3 months post-HSCT.

Received tetanus/diphtheria vaccination series.

If female, have a negative urine or serum pregnancy test within two weeks prior to entry into this study, and agree to avoid pregnancy during entire participation through the use of effective birth control or abstinence.

No history of a serious adverse event associated with any previous vaccination.

Not participating in another experimental vaccine study.

Serum hemoglobin greater than or equal to 9 g/dL.

No history of hepatitis B.

Not receiving any more than replacement glucocorticoid therapy.

Not receiving any dose of cyclosporine.

No acute graft-versus-host disease grade II or higher, at time of consideration for study.

No chronic graft-versus-host disease more involved than localized skin lesions and/or liver dysfunction, at time of consideration for study.

Must not have received a tetanus/diphtheria or hepatitis B booster in the last 6 months.

Plan de estudios

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¿Cómo está diseñado el estudio?

Colaboradores e Investigadores

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Publicaciones y enlaces útiles

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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 junio de 2000

Finalización del estudio

1 de mayo de 2002

Fechas de registro del estudio

Enviado por primera vez

9 de junio de 2000

Primero enviado que cumplió con los criterios de control de calidad

9 de junio de 2000

Publicado por primera vez (Estimar)

12 de junio de 2000

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 mayo de 2002

Más información

Términos relacionados con este estudio

Otros números de identificación del estudio

  • 000144
  • 00-I-0144

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. .

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