KRT1 and irritable bowel syndrome: For nine comparisons that had IBS2*_ratio values greater than 0.70 but were due to high heterozygosity, our IBD test did not indicate K1 sharing (Figure 4A, arrow 6 represents an example in CAU individuals NA17275/NA17296; also see Figure 1B, arrow 3 showing the high heterozygosity of this pair).