SEN virus infection.

Area of Science:

• Virology
• Hepatology
• Infectious Diseases

Background:

• The SEN virus (SEN-V) is a recently identified single-stranded, circular, non-enveloped DNA virus.
• SEN-V strains are provisionally classified within the Circoviridae family, alongside other related viruses like TT virus (TTV).
• SEN-V has been associated with post-transfusion hepatitis, highlighting its clinical relevance.

Purpose of the Study:

• To review the current understanding of SEN virus (SEN-V) infection.
• To explore the prevalence, transmission, and potential impact of SEN-V on liver diseases.
• To identify gaps in knowledge regarding SEN-V pathogenesis and clinical significance.

Main Methods:

• Literature review of studies on SEN virus (SEN-V).
• Analysis of data on SEN-V prevalence, genetic diversity, and transmission routes.
• Examination of existing research on the association of SEN-V with various liver conditions, including hepatitis and HCV therapy response.

Main Results:

• Eight SEN-V strains have been identified, with significant global prevalence variations.
• Parenteral transmission is likely, and mother-to-infant transmission has been confirmed.
• Contradictory findings exist regarding SEN-V's influence on Hepatitis C Virus (HCV) therapy response, and data on other liver diseases are limited.

Conclusions:

• SEN virus (SEN-V) is an emerging viral agent with a complex transmission profile and uncertain clinical impact.
• More research is essential to elucidate the pathogenesis and full clinical importance of SEN-V infections.
• Understanding SEN-V is crucial for managing transfusion-related hepatitis and other liver diseases.