Association of Toll –like Receptors 1, 2, 4, 6 ,8, 9 and 10 Genes Polymorphisms and Susceptibility to Tuberculosis in Sudanese Patients

Abstract Background: Genetic factors are important contributors to the development of a wide range of complex disease. Polymorphisms in genes encoding for toll like receptors (TLRs) usually influence the efficiency of the immune response to infection and are associated with disease susceptibility and progression. Therefore, we aims to describe the first association between TLR1, TLR2, TLR4 TLR6 , TLR8 , TLR9 ,and TLR10 genes polymorphisms and susceptibility to tuberculosis in Sudanese patients.Methodology: Here we performed a case study which included 160 tuberculosis patients and 220 healthy matched controls from Sudan. In the study population, we evaluated the possible association between 86 markers in TLR1, TLR2, TLR4 TLR6 , TLR8 , TLR9 ,and TLR10 genes polymorphisms and susceptibility to tuberculosis disease in Sudanese population using polymerase chain reaction and restriction fragment length polymorphism (PCR-RFLP) . Result: From our results It appeared that in the tuberculosis population the TLR1 rs5743557, TLR1 rs4833095, TLR1 rs5743596, TLR2 rs5743704, TLR2 rs5743708, TLR2 rs3804099 , TLR4 rs4986790 ,TLR4 rs4986791, TLR6 rs5743810 , TLR8 rs3764879 , TLR8 rs3764880, TLR9 rs352165, TLR9 rs352167, TLR9 rs187084 and TLR10 rs4129009 were significantly more often encountered (p<0.0001) than in the control population and were associated with tuberculosis in the Sudanese population. For the other polymorphisms tested, no association with tuberculosis was found in the population tested. Conclusion: This indicates that the genotypes obtained for TLR1 rs5743557, TLR1 rs4833095, TLR1 rs5743596, TLR2 rs5743704, TLR2 rs5743708, TLR2 rs3804099 , TLR4 rs4986790 ,TLR4 rs4986791, TLR6 rs5743810 , TLR8 rs3764879 , TLR8 rs3764880, TLR9 rs352165, TLR9 rs352167, TLR9 rs187084 and TLR10 rs4129009 allele have a significant role in the genetic susceptibility to development tuberculosis in Sudanese population.