Registration Study of Takayasu's Arteritis in China

Study Overview
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Brief Summary
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Takayasu arteritis(TA) is a chronic progressive vasculitis predominantly affecting the aorta and its major branches. The demographic, clinical and prognostic features of Takayasu arteritis in China remains in uncertainties. Investigators aim to setup a national registration study for Takayasu arteritis, to observe the prevalence, clinical manifestations, natural history, survival, progression, diagnostic and therapeutic methods of the disease in China.

Detailed Description
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Objective: The study aims to investigate the demographic, clinical and prognostic features and to draw the diagnostic and therapeutic algorithm of Takayasu arteritis in China. Study Type: A national, multicenter, observational, ambispective cohort study. Study Design: The cardinal contents of this registry study are as follows: Select representative clinical centers through typical sampling methods and train the local investigators in basic knowledge of Takayasu arteritis. Introduce the Electronic Data Capture System and train in completing case report forms. Collect demographic, clinical, imaging, laboratory, diagnostic and therapeutic information of Takayasu arteritis patients hospitalized from Jan 1st 2002 to now. Build a baseline database of Takayasu arteritis patients. Recruit new diagnosed Takayasu arteritis patients in future 2 years from 2017 or till reaching a total of 1067 registered patients. Gather the 3-month, 6-month, 1-year follow up information including general, clinical, therapeutic, prognostic data of all recruits and build up the follow-up database. Establish bio-bank for serum/plasma, urine, stool, tissues or cells. Data management, quality control and statistic analysis: Electronic Data Capture System has been built and the investigators will manage and analyze data in align with key indicators. The investigators have invited professional statistic analysts to assist analyzing data and a third party to supervise data quality. Ethics: The Ethics Committee of Fuwai Hospital approved this study and following ethical supports from participating centers are required. Informed consents before patient enrollment are required.

Official Title
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Registration Study of Takayasu's Arteritis in China

Conditions
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Takayasu Arteritis

Intervention / Treatment
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* Radiation: PET-CT
* Other: laboratory biomarker analysis
* Genetic: genetic sequencing


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: All of the patients diagnosed in participating clinical centers with Takayasu arteritis fulfilled the American College of Rheumatology 1990 criteria for the classification of Takayasu arteritis or the 1996 revised diagnostic criteria for Takayasu arteritis from Ishikawa K by Sharma BK et al. Patients highly suspected as Takayasu arteritis but uncertain in local centers can apply for assistant diagnosis of senior medical institutions. Exclusion Criteria: Manifestations caused by other diseases: atherosclerosis, fibromuscular dysplasia, Bechet's disease, giant cell arteritis, congenital vascular malformation, syphilis and other infections resulting in vasculitis. Pregnant women and lactating women. None indications for Takayasu arteritis from ultrasound, computed tomographic angiography, magnetic resonance angiography, digital subtraction angiography. Absence of patient consents or dropout during the study.
Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Takayasu arteritis<br>All recruited Takayasu arteritis patients. | Radiation: PET-CT<br>* PET-CT will be proceed on the basis of clinical status and aspiration of individual patient. The imaging results will be analysed by professional radiologists.<br>Other: laboratory biomarker analysis<br>* Screening of potential biomarkers related to Takayasu arteritis and verification tests will be operated.<br>Genetic: genetic sequencing<br>* Genetic sequencing results will be analysed to identify susceptible alleles or single nucleotide polymorphisms of Takayasu arteritis.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| prevalence rate | the percentage of Takayasu arteritis patients among general population (estimated) during one-year period | 1 year | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| survival rate or mortality rate | the percentage of alive or dead recruits | 1 year, at 3-month interval | 
| rehospitalization rate | the percentage of readmission to hospitals or centers | 1 year, at 3-month interval | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Takayasu Arteritis, registry