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Chronic hepatitis C in African Americans and other minority groups
1Department of Medicine, University of Tennessee, Memphis, 920 Madison Avenue, Suite 200, Memphis, TN 38103, USA. jffleckenste@utmem.edu
Insights
African Americans with chronic hepatitis C virus (HCV) infection show lower treatment response rates and higher rates of hepatocellular carcinoma compared to non-Hispanic whites. Increased diversity in clinical trials is crucial for understanding and addressing these disparities.
Area of Science:
- Hepatology
- Infectious Diseases
- Health Disparities
Background:
- Chronic hepatitis C virus (HCV) is a significant public health concern in the U.S., disproportionately affecting African Americans.
- African Americans represent a substantial portion of HCV infections and exhibit distinct clinical characteristics and treatment outcomes.
- Existing research highlights racial disparities in HCV progression and treatment efficacy, necessitating further investigation.
Purpose of the Study:
- To examine the prevalence and clinical characteristics of chronic hepatitis C virus (HCV) infection among African Americans.
- To compare treatment response rates and disease progression between African American and non-Hispanic white patients with HCV.
- To identify factors contributing to observed racial differences in HCV management and outcomes.
Main Methods:
- Review of epidemiological data on HCV prevalence across racial demographics in the United States.
- Analysis of clinical studies comparing outcomes of interferon and ribavirin-based therapies in African American versus non-Hispanic white patients.
- Exploration of immunologic, virologic, and biochemical differences in HCV-infected African American populations.
Main Results:
- African Americans exhibit a higher prevalence of HCV infection (3.2%) and account for 22% of all U.S. cases.
- Lower response rates to interferon and ribavirin, including newer regimens like pegylated interferon and ribavirin, are observed in African Americans.
- African Americans show a lower likelihood of cirrhosis but a higher risk of hepatocellular carcinoma and a higher prevalence of genotype 1 infection.
Conclusions:
- Significant racial disparities exist in chronic hepatitis C virus (HCV) infection outcomes and treatment efficacy between African Americans and non-Hispanic whites.
- Underrepresentation of minority groups, including Mexican Americans, in clinical trials limits understanding of HCV in diverse populations.
- Ongoing efforts to enhance racial diversity in clinical trials are essential for equitable HCV research and patient care.
Abstract:
Chronic hepatitis C virus (HCV) is the most common bloodborne infection in the United States. An estimated 2.7 million Americans are infected, with the greatest prevalence of infection in African Americans at 3.2%. African Americans account for 22% of Americans with HCV. Recent studies have shown that African Americans are less likely to have cirrhosis than similarly infected non-Hispanic white patients and are more likely to have genotype 1 infection and to develop hepatocellular carcinoma. Several studies have shown that the response rates of African Americans to interferon and ribavirin are significantly lower than those for non-Hispanic whites. Despite the relatively low percentage of African-American patients in these early studies, similar preliminary results are being found in larger prospective studies with the newer treatment regimens of pegylated interferon and ribavirin. Differences in immunologic status, viral kinetics, and iron studies have also been found in HCV-infected African-American patients. Less is known about Mexican Americans and other minority groups because they are poorly represented in clinical trials. Efforts at increasing racial diversity in clinical trials are ongoing.
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