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| Tracking Information | |||||||||
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| First Received Date ICMJE | September 27, 2000 | ||||||||
| Last Updated Date | August 24, 2009 | ||||||||
| Start Date ICMJE | September 2000 | ||||||||
| Estimated Primary Completion Date | August 2005 (final data collection date for primary outcome measure) | ||||||||
| Current Primary Outcome Measures ICMJE | |||||||||
| Original Primary Outcome Measures ICMJE | |||||||||
| Change History | Complete list of historical versions of study NCT00006301 on ClinicalTrials.gov Archive Site | ||||||||
| Current Secondary Outcome Measures ICMJE | |||||||||
| Original Secondary Outcome Measures ICMJE | |||||||||
| Descriptive Information | |||||||||
| Brief Title ICMJE | Immune Response to Hepatitis C Virus | ||||||||
| Official Title ICMJE | Evaluation of the Immune Response in Humans After Exposure to Hepatitis C Virus | ||||||||
| Brief Summary | This study will identify and characterize immune factors involved in hepatitis C infection and elimination of the virus. Individual responses to hepatitis C infection vary; some people are able to eliminate the virus, whereas others remain chronically infected. This study may identify factors important in preventing infection that may be of help in developing a vaccine or more effective treatments. People over 18 years old who have been exposed to hepatitis C virus may participate in this study. Subjects will be recruited from the National Institutes of Health, Inova Fairfax Hospital, Occupational Medical Services-IDP P.C., Washington Hospital Center and Holy Cross Hospital, all in the Washington, D.C. metropolitan area. Individual patients from other centers will also be recruited on a case by case basis. Participants will have 40 to 60 cc (1 to 2 ounces) of blood drawn at seven intervals. The first collection will be as soon as possible after exposure to hepatitis C virus and then again at 2, 4, 6, 12, 24, and 48 weeks after exposure. The white blood cells will be studied for their response to the virus, and markers for infection will be followed. If infection develops, additional samples of blood may be requested, and patients will be offered evaluation for treatment. Test results will be kept confidential and will not be entered into any medical records. |
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| Detailed Description | The course and outcome of hepatitis C virus (HCV) infection is determined by both host and viral factors, none of which have been well defined. In this study, we will follow and assess patients who are occupationally exposed to HCV for viral and immunologic factors that may relate to disease outcome. This protocol is mostly a sample acquisition protocol to support laboratory research. Patients will be interviewed and have blood (and lymphocytes) taken as soon as possible after exposure and again after 2, 4, 6, 12, 24 and 48 weeks. Virological markers, serum antibodies and both CD4 and CD8 T cell responses to HCV will be monitored. Persons who develop hepatitis C will be referred for therapy or enrolled in therapeutic trials currently in place at the National Institutes of Health. These studies will help define the relative roles of virological and immunological factors in determining the course and outcome of HCV infection. |
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| Study Phase | |||||||||
| Study Type ICMJE | Observational | ||||||||
| Study Design ICMJE | |||||||||
| Condition ICMJE | Hepatitis C | ||||||||
| Intervention ICMJE | |||||||||
| Study Arms / Comparison Groups | |||||||||
| Publications * |
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* Includes publications given by the data provider as well as publications identified by National Clinical Trials Identifier (NCT ID) in Medline. |
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| Recruitment Information | |||||||||
| Recruitment Status ICMJE | Recruiting | ||||||||
| Enrollment ICMJE | 243 | ||||||||
| Completion Date | |||||||||
| Estimated Primary Completion Date | August 2005 (final data collection date for primary outcome measure) | ||||||||
| Eligibility Criteria ICMJE |
Male or female; All ethnic groups; Age above 18 years; Defined exposure to hepatitis C. EXCLUSION CRITERIA: Subjects with a Hct of less than 30. |
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| Gender | Both | ||||||||
| Ages | 18 Years and older | ||||||||
| Accepts Healthy Volunteers | No | ||||||||
| Contacts ICMJE |
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| Location Countries ICMJE | United States | ||||||||
| Administrative Information | |||||||||
| NCT ID ICMJE | NCT00006301 | ||||||||
| Responsible Party | |||||||||
| Study ID Numbers ICMJE | 000221, 00-DK-0221 | ||||||||
| Study Sponsor ICMJE | National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) | ||||||||
| Collaborators ICMJE | |||||||||
| Investigators ICMJE | |||||||||
| Information Provided By | National Institutes of Health Clinical Center (CC) | ||||||||
| Verification Date | May 2009 | ||||||||
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ICMJE Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP |
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