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Table 2 Genotypes for IL13 single nucleotide polymorphisms (SNPs)

From: IL13 gene polymorphisms modify the effect of exposure to tobacco smoke on persistent wheeze and asthma in childhood, a longitudinal study

SNP

Position (bp)

Location

Genotype

Frequency (%)

rs1800925 (-1112C/T)

132,020,708

Promoter

CC

577 (63.6)

   

CT

295 (32.5)

   

TT

35 (3.9)

   

Total

907 (100.0)

rs2066960

132,022,334

Intron 1

CC

729 (81.5)

   

AC

157 (17.6)

   

AA

8 (0.9)

   

Total

894 (100.0)

rs1295686

132,023,742

Intron 3

CC

483 (64.6)

   

CT

240 (32.1)

   

TT

25 (3.3)

   

Total

748 (100.0)

rs20541 (R130Q)

132,023,863

Exon 4

GG

583 (64.4)

   

GA

291 (32.1)

   

AA

32 (3.5)

   

Total

906 (100.0)

rs1295685

132,024,344

Exon 4

GG

584 (64.5)

   

GA

280 (30.9)

   

AA

41 (4.5)

   

Total

905 (100.0)

  1. Gene annotation is based on SNPper [25]
  2. IL13: interleukin-13 gene; n, number of samples used in genetic studies; bp, basepairs.