Abstract:
:Single nucleotide polymorphisms (SNPs) in immune-related genes have been shown to play a role in driving the development of the severe phenotypes of dengue virus (DENV) infection. We assessed the association between IFNL3 gene SNP (rs12979860) and dengue clinical outcomes in children. Patients with dengue-related symptoms (aged 1-15 years) admitted at a public hospital in Northeast Brazil were invited to participate. The association between rs12979860 polymorphism and dengue classification and clinical signs and symptoms were analysed. A total of 206 DENV-infected children were included: 53.4% of the infections were classified as severe dengue. The T allele carriers had higher risk of developing severe dengue when compared to CC genotype carriers (OR: 1.81; 95% CI: 0.98-3.32 p = .054). The T allele carriers also showed longer fever episodes when compared to patients with the CC genotype (OR: 1.90; 95%CI: 1.07-3.38; p = .027). On the other hand, the ones carrying the CT/TT genotype had 70% lower chance of developing thrombocytopenia when compared to those with the CC genotype (OR: 0.30; 95%CI: 0.08-0.88; p = .042). Our findings demonstrated that the T allele carriers of the IFNL3 gene had higher risk of developing severe dengue, suggesting a link between IFN-λ expression and DENV immunopathogenesis.
journal_name
Int J Immunogenetjournal_title
International journal of immunogeneticsauthors
da Silva Cezar RD,da Silva Castanha PM,Matos Freire N,Mola C,Feliciano do Carmo R,Tenório Cordeiro M,Baptista P,Silva Vasconcelos LR,Moura P,da Silva Teixeira VGdoi
10.1111/iji.12477subject
Has Abstractpub_date
2020-08-01 00:00:00pages
351-358issue
4eissn
1744-3121issn
1744-313Xjournal_volume
47pub_type
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