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Effectiveness of Hepatitis A Virus Vaccination Among Homosexual Males at Risk for Hepatitis A Infection

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ClinicalTrials.gov Identifier: NCT01102296
Recruitment Status : Completed
First Posted : April 13, 2010
Last Update Posted : December 27, 2012
Sponsor:
Information provided by (Responsible Party):
National Taiwan University Hospital

Study Description
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Brief Summary:
Male homosexuals are at risk for hepatitis A virus (HAV) infection, and HAV vaccination has been recommended to prevent HAV infection in male homosexuals. HIV infection may impair serological responses to HAV vaccination in HIV-infected patients. The investigators hypothesize that 3 doses of HAV vaccine will improve serological responses to HAV vaccine in HIV-infected patients.

Condition or disease Intervention/treatment Phase
Hepatitis Biological: Hepatitis A vaccine Not Applicable

Detailed Description:
In this study, we aim to compare the serological responses to HAV vaccination between HIV-infected patients who receive 2 doses or 3 doses of HAV vaccine and HIV-uninfected persons who receive 2 doses of HAV vaccine. Persons who identify themselves as male homosexuals aged younger than 40 years and are seronegative for hepatitis A virus will be enrolled. HAV vaccination will be provided free-of-charge. HIV-uninfected persons will receive 2 doses of HAV vaccine that will be administered at baseline and 6 months after the first dose, while HIV-infected patients will be given 2 doses or 3 doses of HAV vaccine; for those who choose to receive 3 doses, a second dose will be given 1 month after the first dose. A longitudinal follow-up of serological responses will be conducted to assess the effectiveness of HAV vaccination; HAV IgG will be determined at 6 months after the first dose of HAV vaccination(before the administration of the second dose), 12 months and 18 months after the first dose of HAV vaccination .

Study Design
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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 582 participants
Allocation: Non-Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)
Primary Purpose: Prevention
Official Title: Division of Infectious Diseases, Department of Internal Medicine, National Taiwan University Hospital
Study Start Date : June 2009
Actual Primary Completion Date : March 2012
Actual Study Completion Date : April 2012

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Arms and Interventions
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Arm Intervention/treatment
Active Comparator: male homosexuals
HIV-uninfected male homosexuals will be provided 2 doses of HAV vaccine, which will be administered at baseline and 6th month of follow-up.
 Biological: Hepatitis A vaccine
2 or 3 doses of hepatitis A vaccine to HIV-infected male homosexuals and 2 doses of hepatitis A vaccine to HIV-uninfected male homosexuals.
Other Names:
  • HAVRIX (1440 ELISA unit)per dose.
  • MSM
Active Comparator: HIV-infected male homosexuals, group1
HIV-infected male homosexuals will be provided 3 doses of HAV vaccine, which will be administered at baseline, 1st, and 6th month of follow-up.
 Biological: Hepatitis A vaccine
2 or 3 doses of hepatitis A vaccine to HIV-infected male homosexuals and 2 doses of hepatitis A vaccine to HIV-uninfected male homosexuals.
Other Names:
  • HAVRIX (1440 ELISA unit)per dose.
  • MSM
Active Comparator: HIV-infected male homosexuals, group 2
HIV-infected male homosexuals will be provided 2 doses of hepatitis A vaccine, which will be administered at baseline and 6th month of follow-up.
 Biological: Hepatitis A vaccine
2 or 3 doses of hepatitis A vaccine to HIV-infected male homosexuals and 2 doses of hepatitis A vaccine to HIV-uninfected male homosexuals.
Other Names:
  • HAVRIX (1440 ELISA unit)per dose.
  • MSM


Outcome Measures
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Primary Outcome Measures :
  1. the proportion of vaccinees who achieve anti-HAV antibody concentrations of 20 mIU/ml or greater at week 48 of vaccination [ Time Frame: 48 weeks ]

Secondary Outcome Measures :
  1. the concentrations of anti-HAV antibody at week 48 of vaccination [ Time Frame: 48 weeks ]

Eligibility Criteria
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Ages Eligible for Study:   18 Years to 40 Years   (Adult)
Sexes Eligible for Study:   Male
Accepts Healthy Volunteers:   Yes
Criteria

Inclusion Criteria:

  • Age between 18~40-years-old
  • Homosexuals

Exclusion Criteria:

  • Presence of symptoms or signs suggestive of active infection
  • Allergy to vaccination
  • Failure to provide written informed consent
  • Use of immunosuppressive or immunomodulating agents or chemotherapy
Contacts and Locations
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Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01102296


Locations
Taiwan
National Taiwan University Hospital
Taipei, Taiwan
Sponsors and Collaborators
National Taiwan University Hospital
Investigators
Principal Investigator: Chien-Ching Hung, MD Division of Infectious Disease, Department of Internal Medicine, National Taiwan University Hopsital
More Information
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Responsible Party: National Taiwan University Hospital
ClinicalTrials.gov Identifier: NCT01102296     History of Changes
Other Study ID Numbers: 200903063M
First Posted: April 13, 2010    Key Record Dates
Last Update Posted: December 27, 2012
Last Verified: December 2012

Keywords provided by National Taiwan University Hospital:
hepatitis A vaccine
male homosexual
HIV infection
male homosexuals who are seronegative for hepatitis A virus

Additional relevant MeSH terms:
Hepatitis
Hepatitis A
Liver Diseases
Digestive System Diseases
Hepatitis, Viral, Human
Virus Diseases
 Enterovirus Infections
Picornaviridae Infections
RNA Virus Infections
Vaccines
Immunologic Factors
Physiological Effects of Drugs