Family study of non-responsiveness to hepatitis B vaccine confirms the importance of HLA class III C4A locus

A. De Silvestri, A. Pasi, M. Martinetti, C. Belloni, C. Tinelli, G. Rondini, L. Salvaneschi, M. Cuccia

Research output: Contribution to journalArticlepeer-review

Abstract

Non-responsiveness to hepatitis B virus (HBV) vaccine in adults is strongly associated with HLA-C4AQ0,DRB1* 0301,DQB1*02 haplotype. This association was also demonstrated in neonates who failed to mount a humoral response to challenge with HBV vaccine. About 4% of vaccinated newborns do not reach a protective antibody level (≥ 10 mlU/ml) at seroconversion and 0.4% is a non-responder even after receiving a fourth dose of vaccine (true non-responders (TNR)); while 3.6% achieved an antibody level ≥ 10 mlU/ml (slow responders (SR)) only when reboostered with the fourth dose. In the present study we extend the vaccination and HLA typing to 91 family members of probands to understand better the possible parent-to-child transmission of this trait. A transmission disequilibrium test (TDT), performed in 27 families, showed that the C4AQ0 allele was almost always transmitted to probands, both TNRs and SRs. Although not statistically significant, the highest LOD score was obtained with C4A locus: 1.58. These results suggest the presence of a region regulating immune response against HBV vaccination near to or coincident with the C4A locus.

Original languageEnglish
Pages (from-to)367-372
Number of pages6
JournalGenes and Immunity
Volume2
Issue number7
DOIs
Publication statusPublished - Nov 2001

Keywords

  • Anti-hepatitis B vaccination
  • Family study
  • Fourth component of complement

ASJC Scopus subject areas

  • Genetics
  • Immunology
  • Genetics(clinical)

Fingerprint Dive into the research topics of 'Family study of non-responsiveness to hepatitis B vaccine confirms the importance of HLA class III C4A locus'. Together they form a unique fingerprint.

Cite this