# Host Genetic Factors in Q Fever Susceptibility

## TL;DR

This study investigates how host genetic factors, particularly HLA-DRB1 variants, may influence susceptibility to Q fever.

## Contribution

The study identifies a potential role of HLA-DRB1*04 in Q fever susceptibility, suggesting implications for vaccination and risk assessment.

## Key findings

- No significant associations were found for TLR2 and TLR4 polymorphisms in Q fever susceptibility.
- HLA-DRB1*04 was more frequent in patients with acute Q fever compared to controls.
- The findings suggest HLA-DRB1 variants may influence Q fever susceptibility.

## Abstract

Several indirect findings suggest that host-related factors influence susceptibility to Coxiella burnetii infection. We decided to explore the influence of genetic factors related to both innate and adaptive immunity in acute Q fever susceptibility. TLR2 (Arg753Gln) and TLR4 (Asp299Gly, Thr399Ile) polymorphisms, along with HLA-DRB1 alleles, were analyzed for 38 patients with acute Q fever, 38 matched controls, and 121 blood donors. No significant associations were found for TLR polymorphisms. However, HLA-DRB1*04 was more frequent in patients. HLA-DRB1 variants may play a role in Q fever susceptibility, supporting the need for further investigation into their potential implications for vaccination and risk assessment.