Hepatitis B Clinical Trial
Official title:
Prevalence and Burden of Hepatitis D Virus Infection in China Through Preoperative Examination Test (Predict Study)
Verified date | November 2022 |
Source | The First Affiliated Hospital with Nanjing Medical University |
Contact | n/a |
Is FDA regulated | No |
Health authority | |
Study type | Observational |
In China, there is no recommendation for Hepatitis D virus (HDV) screening, but the fact is estimated that one-third of the world's population of individuals with chronic Hepatitis B virus (HBV) infection live in China while we do not know the prevalence of co-infection of HBV/HDV in China. So far, no nationwide study has been undertaken to evaluate the epidemiology of hepatitis D, on the other hand, reports of HDV infection rate in different regions of China are not consistent because of the different detection methods and detection objects. Here, we plan to test HDV-Ab/RNA for 5000 HBsAg reactive samples from 10 major tertiary hospital and to know the prevalence and disease burden of HDV in China.
Status | Not yet recruiting |
Enrollment | 5000 |
Est. completion date | July 1, 2023 |
Est. primary completion date | April 1, 2023 |
Accepts healthy volunteers | No |
Gender | All |
Age group | 18 Years and older |
Eligibility | Inclusion Criteria: 1. Positive HBV surface antigen (HBsAg) 2. Age 18 yeas and above Exclusion Criteria: 1. Severe cardiac, renal, respiratory, hematological, or psychiatric illness. |
Country | Name | City | State |
---|---|---|---|
n/a |
Lead Sponsor | Collaborator |
---|---|
The First Affiliated Hospital with Nanjing Medical University | Gilead Sciences |
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | HDV seroprevalence and HDV RNA prevalence amongst HBsAg positive carriers in China. | Briefly, serum samples were tested undiluted, and after dilution of 1:10, 1:100, 1:1,000, 1:5,000, 1:10,000, 1:50,000, and was considered the highest dilution with a S/Co value >1.0. The detection system consisted of a competitive enzyme immunoassay, in which Anti-HDV antibodies (IgG/IgM), if present in the sample, compete with a virus-specific human polyclonal IgG, labeled with peroxidase (HRP), for a txed amount of full-length rec-HDV coated on the microplate. Qualitative HDV RNA was determined by in-house Polymerase Chain Reaction (PCR). Quantitative HDV-RNA was performed by means of LightCycler 2.0 (lower limit of detection 10 copies/reaction). | 3 months | |
Secondary | The distribution of HDV genotypes in China | Genotyping of HDV was performed by direct sequencing of the delta antigen region. | 3 months |
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