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Hepatitis C virus core antigen: A diagnostic and treatment monitoring marker of hepatitis C virus in Indian population.
- Source :
-
Indian journal of gastroenterology : official journal of the Indian Society of Gastroenterology [Indian J Gastroenterol] 2024 Aug; Vol. 43 (4), pp. 799-804. Date of Electronic Publication: 2024 Apr 15. - Publication Year :
- 2024
-
Abstract
- Background: The diagnosis and treatment monitoring of hepatitis C is quite challenging. The screening test, i.e. antibody assay, is unable to detect acute cases, while the gold standard hepatitis C virus (HCV) reverse transcriptase polymerase chain reaction (RTPCR) assay is not feasible in resource-limited countries such as India due to high cost and infrastructure requirement. European Association for the Study of the Liver and World Health Organization have approved a new marker, i.e. HCV core antigen (HCVcAg) assay, as an alternative to molecular assay. In this study, we have evaluated HCVcAg assay for diagnosis and treatment monitoring follow-up in Indian population infected with hepatitis C.<br />Methods: Blood specimen of 90 clinically suspected cases of acute hepatitis C were tested simultaneously for anti-HCV antibody assay via ELISA (enzyme-linked immunoassay), HCVcAg assay by chemiluminescence immune assay (CLIA) and HCV RTPCR VL (viral load) assay. Thirty-four HCV RTPCR positive patients were further enrolled in treatment monitoring group whose blood samples were tested at the beginning of treatment, two weeks, four weeks and 12 weeks via HCV core Ag assay and HCV RTPCR Viral Load assay.<br />Results: Considering HCV RTPCR as gold standard, diagnostic performance of HCV core Ag assay and anti-HCV antibody assay was evaluated. The sensitivity and specificity of HCV core Ag assay were higher than that of anti-HCV Antibody assay, i.e. 88.3% and 100% vs. 23.3% and 83.3%, respectively. The overall diagnostic accuracy of HCV core Ag assay was 92.20%. Among treatment follow-up group, HCV core Ag levels correlated well with HCV viral load levels, at the beginning of treatment (baseline) till 12 weeks showing highly significant Spearman rank correlation coefficient of > 0.9 with HCV viral load levels.<br />Conclusions: HCV core Ag assay is a cost-effective, practically feasible substitute of HCV RTPCR viral load assay for diagnosis as well as long duration treatment monitoring of hepatitis C infection in resource-limited settings.<br /> (© 2024. Indian Society of Gastroenterology.)
- Subjects :
- Humans
India
Male
Female
Antiviral Agents therapeutic use
Sensitivity and Specificity
Hepatitis C Antibodies blood
Adult
Viral Core Proteins blood
Middle Aged
Enzyme-Linked Immunosorbent Assay methods
Reverse Transcriptase Polymerase Chain Reaction
Hepatitis C diagnosis
Hepatitis C blood
Hepacivirus genetics
Hepacivirus immunology
Hepacivirus isolation & purification
Hepatitis C Antigens blood
Biomarkers blood
Viral Load
Subjects
Details
- Language :
- English
- ISSN :
- 0975-0711
- Volume :
- 43
- Issue :
- 4
- Database :
- MEDLINE
- Journal :
- Indian journal of gastroenterology : official journal of the Indian Society of Gastroenterology
- Publication Type :
- Academic Journal
- Accession number :
- 38619807
- Full Text :
- https://doi.org/10.1007/s12664-024-01549-7