Associate Medical Director, Infectious Diseases - Abbott Diagnostics
BIOGRAPHY
DEC 05, 2019 5:00 AM PST
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The clinical implications of high sensitive assays for HBsAg
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Abstract
DATE: December 5, 2019
TIME: 5:00am PST, 8:00am EST
The diagnosis of an active infection by the hepatitis B virus (HBV) relies on testing for the HBV surface antigen (HBsAg). Over the decades the sensitivity of HBsAg assays has increased, and the most recent solutions attain a level of 5 mIU/mL and enable to detect active HBV also at very low level of expression, with HBV-DNA levels <100 mIU/mL. The availability of such assays will help improve the safety of blood screening in settings that do not encompass testing for HBV-DNA and will enable unveiling HBsAg in a substantial share of "occult" or "latent" HBV infections (OBI). Unveiling OBIs has a great clinical relevance in immunocompromised or immunosuppressed patients and in people coinfected by other viruses, such as HCV or HIV. Additionally, since the negativity for HBsAg is a major endpoint for antiviral treatment with nucleosi(t)ide analogues, a higher sensitivity for HBsAg can help with a safer interruption of treatment.
Learning Objectives:
- Review the natural history of HBV infection and the progress in HBsAg testing
- Understand the mechanism and clinical implications of HBV reactivation
- Acknowledge the medical improvements linked to a better sensitivity for HBsAg
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DEC 05, 2019 5:00 AM PST
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The clinical implications of high sensitive assays for HBsAg
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Infectious Disease
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Clinical Diagnostics
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