IL1B and juvenile polyposis syndrome: Importantly, the proportion of carriers of the less common IL1B-511*T allele was significantly higher in PJI patients (69%) than in those that did not develop PJI (51%, p = 0.006, pcorr = 0.037; odds ratio = 2.06, 95%CI: 1.22-3.47) or healthy controls (55%, p = 0.04, pcorr > 0.05; odds ratio = 1.76, 95%CI: 1.02-3.02), (Figure 2).