<i>IL1B</i>-31, <i>IL1RN</i> and <i>TNFA</i>-307 genotypic frequencies in <i>H. pylori-positive</i> (n = 47) and –<i>negative</i> children (n = 78).

a<p>It was not possible to genotype 1 <i>H. pylori</i>-positive children for <i>IL1B-</i>31 and 1 for <i>IL1RN</i>.</p>b<p>1 indicates all the long alleles and 2 the short allele. The loci did not deviate significantly from the expected Hardy-Weinberg distribution (P = 0.90 for <i>IL1B-3</i>1, P = 0.26 for <i>IL1RN</i> and P = 0.08 for <i>TNFA</i>-307) and all segregated independently.</p>