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Clinical Trial Summary

The purpose of this study is to evaluate diagnostic immunization protocol of rabies vaccine for diagnosis the patients with primary immunodeficiency disorders and study humoral and cellular immune response to rabies vaccine in patients with primary immunodeficiency.


Clinical Trial Description

Objective Primary objective

: To study diagnostic immunization protocol of rabies vaccine for diagnosis the patients with primary immunodeficiency disorders. Secondary objective

- To study humoral and cellular immune response to rabies vaccine in patients with primary immunodeficiency.

- To study anti-rabies immunization protocol in patients with primary immunodeficiency disorders.

Population Case group: Twenty primary immunodeficiency disease patients that are diagnosed, treated and followed at Allergy and Immunology unit, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University.

Control group: Twenty healthy subjects who have no underlying disease and age-matched with case patients. Inclusion and exclusion criteria

Vaccine :

- Verorab® (PVRV; Purified Vero Cell Vaccine) 0.5 ml intramuscular

- Standard intramuscular regimen: ESSEN on days 0, 3, 7, 14, 28 and booster at 1 year later on days 360 and 363

Immunological evaluations :

1. Humoral immune response :

on 5 ml blood samples will be collected for antibody determination days 0, 14, 28, 90, 360, 367 and 374. Neutralizing antibodies will be determined blindly using the rapid fluorescent focus inhibition test (RFFIT) at Queen Saovabha Memorial Institute. Rabies neutralizing antibody will be reported in IU/ml The protective antibody level are defined rabies neutralizing antibody ≥ 0.5 IU/ml .

2. Cellular mediated immune response :

On 5 ml blood samples will be collected for antibody determination days 14, 28, 90, 360, 367 and 374. Lymphocyte proliferation response to rabies antigen will be determined by using 3H-thymidine incorporation assay.

The responder criteria are defined as stimulation index (SI index) ≥ 2.0 was considered as evidence of antigen-induced lymphocyte proliferation. ;


Study Design

Endpoint Classification: Safety/Efficacy Study, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Diagnostic


Related Conditions & MeSH terms


NCT number NCT02490956
Study type Interventional
Source Chulalongkorn University
Contact Narissara - Suratannon, MD
Phone 6622564455
Email mayzped@gmail.com
Status Recruiting
Phase Phase 4
Start date April 2015
Completion date September 2016

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