Frequency of at least one rare MUC2�CMS6 allele in cancer cases and the risk of cancer.

GC-Group I and II represent two different groups with gastric cancer. They were obtained from two different hospital groups in two different cities (Dong-A University [I] and Chungbuk University [II]).*Statistically significant (p**Pearson's Chi-squared test with simulated p-value (based on 10,000 replicates).***One case had two alleles: C/C, two common alleles; C/R, one rare and one common allele; R/R, two rare alleles[****One gastric cancer case had two rare alleles].