Hepatitis A Vaccine in Patients With Immunomodulating Drugs

November 17, 2015 updated by: Lars Rombo

Hepatitis A Vaccination in Patients With Rheumatoid Arthritis Treated With TNF-inhibitors and/or Methotrexate

Hepatitis A vaccine is the most frequently used traveller's vaccine, yet data on its ability to induce protective immunity in immunosuppressed travellers are scarce. The investigators assess the hepatitis A virus (HAV) antibody response in patients with rheumatoid arthritis (RA) treated with Tumor Necrosis Factor (TNF) - inhibitors and/or methotrexate (Mtx).

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

Methods: Parameters registered at baseline were: age, sex, duration of disease, medications, activity of disease (Visual Analogue Scale=VAS, Health Assessment Questionnaire Disability Index = HAQ, Disease Activity Score =DAS-28, CRP and total IgG in plasma). Hepatitis A vaccine (Epaxal or Havrix) were given at 0 and 6 months. Hepatitis A virus (HAV) antibodies is measured before vaccination and at month 1, 6 (before dose 2), 7 and 12 with quantitative HAV IgG, using the HAVAb-IgG Architect System, and by the HAVAB 2.0 assay on the AxSYM machine from Abbott. The level of protective immunity to HAV is defined as HAV IgG > 10mIU/mL.

Study Type

Interventional

Enrollment (Actual)

68

Phase

  • Phase 2

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

  • Finland
      • Helsingfors, Finland, 00029
        • Dept infectious diseases
  • Sweden
      • Eskilstuna, Sweden, 631 88
        • Dept infectious diseases
      • Karlstad, Sweden, 651 85
        • Dept infectious diseases
      • Stockholm, Sweden, 17176
        • Department of Infectious Diseases

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

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Diagnosis of rheumatoid arthritis
  • TNF-alfa blocker and / or methotraxate in use as a medication against RA
  • A desire to get protected against hepatitis A
  • Men and women age 18-65 years
  • Written informed consent
  • Women of childbearing potential must use effective contraception -

Exclusion Criteria:

  • Treatment with rituximab within 9 months before study start
  • Known previous hepatitis A infection
  • Previous vaccination against hepatitis A
  • Allergy to eggs or formaldehyde
  • Pregnancy or lactation
  • Excessive use of alcohol
  • Mental retardation
  • Acute disease at the time of examination (fever > 38 degrees)
  • Volunteer works as an employee of the researchers
  • Previous vaccination against hepatitis A
  • Egg-, henprotein- or formaldehyde allergy
  • Pregnancy or lactation
  • Excessive use of alcohol
  • Another vaccine given within a month
  • Acute disease at the time of examination (fever > 38 degrees)
  • Not suitable for other reason in the investigator's opinion (other serious disease, i.e. AIDS/HIV-positive, cancer with ongoing cytostatic treatment)

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: Prevention
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
seroconversion after a single dose of hepatitis A vaccine
Time Frame: one month after dose
ELISA-titers are determined before first dose and at 1 and 6 months later
one month after dose

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
seroconversion rates after a second dose of hepatitis A vaccine
Time Frame: 12 monrths
We determine seroconversion rates before the second vaccine dose ( 6 months after the first) and at 1 and 6 months after the second dose
12 monrths

Collaborators and Investigators

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

Sponsor

Lars Rombo

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

September 1, 2009

Primary Completion (Actual)

May 1, 2011

Study Completion (Actual)

May 1, 2011

Study Registration Dates

First Submitted

May 24, 2011

First Submitted That Met QC Criteria

May 25, 2011

First Posted (Estimate)

May 26, 2011

Study Record Updates

Last Update Posted (Estimate)

November 18, 2015

Last Update Submitted That Met QC Criteria

November 17, 2015

Last Verified

November 1, 2015

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • EU 2009-016055-22

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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