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Table 3 Genotype and minor allele frequencies and Hardy Weinberg equilibrium for the selected TLR4 polymorphisms comparing children with asymptomatic and clinical malaria

From: Toll-like receptor (TLR4) Asp299Gly and Thr399Ile polymorphisms in relation to clinical falciparum malaria among Nigerian children: a multisite cross-sectional immunogenetic study in Lagos

TLR4 SNP

Genotype/Minor allele

Study group

*OR (95 % CI)

P

HWE, χ2 (P)

Total

Clinical malaria

ASM

(N = 279)

(n = 187)

(n = 92)

Asp299Gly

Asp299Asp, % (Fraction)

88.5 (247/279)

87.7 (164/187)

90.2 (83/92)

1

 

Clinical malaria = 4.89 (<0.05)

Asp299Gly, % (Fraction)

10.8 (28/279)

10.7 (20/187)

8.7 (8/92)

   

Gly299Gly, % (Fraction)

0.7 (4/279)

1.6 (3/187)

1.1 (1/92)

1.29 (0.57-2.92)

0.54

ASM = 0.11 (>0.05)

MAF

6.5 (36/558)

7 (26/374)

5.4 (10/184)

 

0.49

 

Thr399Ile

Thr399Thr, % (Fraction)

94.9 (265/279)

94.7 (177/187)

95.7 (88/92)

1

 

Clinical malaria = 1.35 (>0.05)

Thr399Ile, % (Fraction)

4.3 (12/279)

4.3 (8/187)

4.3 (4/92)

   

Ile399Ile, % (Fraction)

0.8 (2/279)

1 (2/187)

0 (0/92)

1.24 (0.58-4.08

0.49

ASM = 0.21 (>0.05)

MAF, % (Fraction)

2.9 (16/558)

3.2 (12/374)

2.2 (4/184)

 

0.50

 
  1. MAF = Minor allele frequency, OR = odd ratio, 95 % CI = 95 % confidence intervals, n = number of children screened per sub-group; N = total number of children screened. *OR was calculated after pooling heterozygous and homozygous mutant genotype frequencies; ASM = asymptomatic malaria; P < 0.05 was considered to be significant