Kawasaki Disease Clinical Trial
— KAWASAKI AcOfficial title:
Measurement of Antibodies in Adults With a History of Kawasaki Disease
Kawasaki disease (KD) is an acute systemic vasculitic syndrome with coronary tropism. It has
been reported worldwide, but it is ten times more common in Asian population. It is the
second vasculitis of the child by its frequency after rheumatoid purpura. It occurs in 80%
of cases between 1 and 5 years, with a maximal incidence around the age of 12 months.
KD is not well understood and the cause is yet unknown. It may be an autoimmune disorder.
The problem affects the mucous membranes, lymph nodes, walls of the blood vessels, and the
heart.The clinical picture of KD associate a persistent fever and an antipyretics resistance
with mucocutaneous signs and bulky cervical lymphadenopathy usually unilateral.
There is currently no vaccine available against Kawasaki disease so it is extremely
important to be able to recognize symptoms before they set in and become too severe.
Chagas disease (CD) is caused by the parasite Trypanosoma cruzi. Acute CD occurs immediately
after infection, may last up to a few weeks or months. Infection may be mild or
asymptomatic. There may be fever or swelling around the site of inoculation, and acute
infection may result in severe inflammation of the heart muscle. The notion that the
pathology of CD has an autoimmune component was initially based on the finding of
circulating antibodies binding heart tissue antigens in patients chronically infected with
T. cruzi.
A recent study reports a possible antigen (non-cruzi-related antibody NCRA) mimicry
characterized by a serological reactivity to a well-defined T. cruzi antigen in blood
samples from individuals not exposed to the parasite. The measured seroprevalence of such
cross-reactivity is in favor of a highly prevalent immunogen acquired in childhood.
There are similarities in mechanism of CD and KD: it could be interesting to explore the
presence of NCRA in blood samples from adults with a history of KD.
The objective of the study is the measurement of the biomarker NCRA in serum in adults with
a history of KD compare to a control population. This measurement and the prevalence may
permit to associate the NCRA to a possible pathogenic agent.
Status | Active, not recruiting |
Enrollment | 75 |
Est. completion date | December 2016 |
Est. primary completion date | December 2015 |
Accepts healthy volunteers | Accepts Healthy Volunteers |
Gender | Both |
Age group | 18 Years to 65 Years |
Eligibility |
Inclusion Criteria: - History of KD before the age of 18, with or without macroscopic coronary lesions in the childhood phase. (KD group only) - 18 years old or older at the time of the study. - Agree on participating to all explorations of the study. - Accept genotyping. - Absence of cardiovascular risk factors Exclusion Criteria: - - Atypical KD (KD group only) - Documented or suspected coronary ischemia, - Refusal to participate to the study or sign the consent - Contra-indication to the injection of iodinated contrast agents (allergy, renal failure) - Hypersensitivity to dobutamine, - No effective contraception method for females with child bearing potential, - Breastfeeding, or pregnant females, - Treatment modifying endothelial reactivity - History of severe intolerance to iodinated contrast agents, - Subjects who can't hold their breath for at least 20 seconds, - Irregular or absence of sinus rhythm, especially atrial or ventricular arrhythmia - Unability to give information to the subject, - No coverage from a Social Security system - Deprivation of civil rights |
Observational Model: Cohort, Time Perspective: Prospective
Country | Name | City | State |
---|---|---|---|
France | Hôpital Louis Pradel - Service de Pharmacologie Clinique | Bron |
Lead Sponsor | Collaborator |
---|---|
Hospices Civils de Lyon |
France,
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Prevalence of NCRA in the KD population vs control population. | at recruitment time. (Day 0) | No | |
Primary | NCRA concentration in the KD population vs control population. | Measurement of the biomarker NCRA in serum in adults with a history of KD vs control population | at recruitment time. (Day 0) | No |
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