Hepatitis B, Hepatitis C
Conditions
Keywords
HBV, HCV, chronic, India, observational study, prevalence,, genotypes, SNPs, viral hepatitis
Brief summary
This study will define the substantial disease burden associated with viral hepatitis in India, and provide a foundation to understand the host and viral determinants of disease pathogenesis that may ultimately impact treatment decisions and outcome
Detailed description
The overall goal of this study is to correlate the host and viral genetics of patients infected with viral hepatitis with their clinical presentation. This study will provide the first nation-wide estimate of key host genetic polymorphisms associated with immune response, such as in the IL28B gene locus which has been associated with treatment outcomes in hepatitis C. Characterization of HCV and HBV viral genotypes and sub-types across different geographic regions will allow for an exploration of associations between host and viral genotypes. Another objective of this study is to identify co-morbid illness and metabolic factors that are associated with chronic liver disease due to viral hepatitis. Finally, this survey will explore patient awareness of their disease, risk factors for disease progression, and their treatment options
Interventions
None listed
Sponsors
Gilead Sciences
Study design
Observational model
COHORT
Time perspective
PROSPECTIVE
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No
Inclusion criteria
* Willing and able to provide written informed consent * Male or female, age \>= 18 * Willing and able to comply with the visit procedure * Prior diagnosis of chronic HCV infection or chronic HBV infection
Exclusion criteria
* History of difficulty with blood collection and/or poor venous access for the purposes of phlebotomy * History of bleeding disorder * Blood loss requiring transfusion or \> 3 g/dL decrease in hemoglobin within 4 days of the visit * Knowingly co-infected with HCV/HBV or with HIV * Currently undergoing therapy for chronic hepatitis C or chronic hepatitis B * Currently receiving treatment with any other investigational agent or device -- Enrolled in another clinical study evaluating a treatment or procedure
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Variation in the IL28B rs12979860 SNP | One Visit | Characterize the variation in the IL28B rs12979860 SNP that exists among patients with chronic hepatitis C or chronic hepatitis B infection, in the different geographic regions of India |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Prevelance of HBV and HCV genotypes | One Visit | Assess the prevalence of HBV and HCV genotypes and subtypes in different geographic regions of India |
| Characterize the SNPs present in innate immune factors toll-like receptor 7 (TLR7) | One Visit | Characterize the SNPs present in innate immune factors TLR7 (rs3853839, rs179008); TLR9 (rs41308230, rs5743844 ); RIG-I (rs11795404, rs10813831) and NOD2 (rs2067085, rs2066842), in patients with chronic hepatitis C or chronic hepatitis B in the different geographic regions of India |
Countries
India
Outcome results
None listed