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Immune Response to Hepatitis C Virus

This study has been completed.
Sponsor:
ClinicalTrials.gov Identifier:
NCT00006301
First Posted: September 28, 2000
Last Update Posted: October 6, 2017
The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
Information provided by (Responsible Party):
National Institutes of Health Clinical Center (CC) ( National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) )
September 27, 2000
September 28, 2000
October 6, 2017
September 24, 2000
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Complete list of historical versions of study NCT00006301 on ClinicalTrials.gov Archive Site
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Immune Response to Hepatitis C Virus
Evaluation of the Immune Response in Humans After Exposure to Hepatitis C Virus

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.

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.
Observational
Observational Model: Cohort
Time Perspective: Prospective
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Hepatitis C
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*   Includes publications given by the data provider as well as publications identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
 
Completed
46
March 24, 2015
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  • INCLUSION CRITERIA:

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.

Sexes Eligible for Study: All
18 Years and older   (Adult, Senior)
No
Contact information is only displayed when the study is recruiting subjects
United States
 
 
NCT00006301
000221
00-DK-0221
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National Institutes of Health Clinical Center (CC) ( National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) )
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
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Principal Investigator: Theo Heller, M.D. National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
National Institutes of Health Clinical Center (CC)
March 24, 2015