Association between polymorphisms in TLR3, TICAM1 and IFNA1 genes and covid-19 severity in Southern Brazil.
Expert Rev Mol Diagn
; 24(6): 525-531, 2024 Jun.
Article
in En
| MEDLINE
| ID: mdl-38864429
ABSTRACT
BACKGROUND:
A distinct phenotype in Coronavirus disease 2019 (Covid-19) was observed in severe patients, consisting of a highly impaired interferon (IFN) type I response, an exacerbated inflammatory response.OBJECTIVE:
The aim of the present study was to investigate a possible association of single nucleotide polymorphisms (SNPs), in five genes related to the immune response, rs3775291 in TLR3; rs2292151 in TICAM1; rs1758566 in IFNA1; rs1800629 in TNF, and rs1800795 in IL6 with the severity of Covid-19.METHODS:
A cross-sectional study was performed, with non-severe and severe/critical patients diagnosed with Covid-19, by two public hospitals in Brazil. In total, 300 patients were genotyped for the SNPs, 150 with the non-severe form of the disease and 150 with severe/critical form.RESULTS:
The T/T genotype of TLR3 in recessive model shows 58% of protection against severe/critical Covid-19; as well as the genotypes G/A+A/A of TICAM1 in dominant model with 60% of protection, and in a codominant model G/A with 57% and A/A with 71% of protection against severe/critical Covid-19. Comparing severe and critical cases, the T/C genotype of IFNA1 in the codominant model and TC+C/C in the dominant model showed twice the risk of critical Covid-19.CONCLUSION:
We can conclude that rs3775291, rs2292151 and rs1758566 can influence the COVID-19 severity.Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Severity of Illness Index
/
Genetic Predisposition to Disease
/
Polymorphism, Single Nucleotide
/
Toll-Like Receptor 3
/
SARS-CoV-2
/
COVID-19
Limits:
Adult
/
Aged
/
Female
/
Humans
/
Male
/
Middle aged
Country/Region as subject:
America do sul
/
Brasil
Language:
En
Journal:
Expert Rev Mol Diagn
/
Expert rev. mol. diagn
/
Expert review of molecular diagnostics
Journal subject:
BIOLOGIA MOLECULAR
Year:
2024
Document type:
Article
Affiliation country:
Brasil
Country of publication:
Reino Unido