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Gene-gene interaction. ORs and patient and control counts of specific IL4R and IL4-IL13 genotypes are shown. A, IL4R E375A (Glu encoded by the A allele, Ala by the C allele) with IL4 T-524C. B, IL4R Q551R (Gln encoded by the A allele, Arg by the G allele) with IL13 A-1512C. C, IL4R C-3223T and IL13 A-1512C. D, IL4R C-3223T and IL13 C-1112T. The P value for the association of each genotype combination is shown above each OR bar.
