The OR for hyperbilirubinemia>40 μmol/L in patients with heterozygous UGT1A1*28 was increased 3 times over patients without this allele (OR 3.07, 95% CI 1.54-4.6) and 34 times as compared with homozygotes (OR 33.9, 95% CI 31.45-36.35). Here, UGT1A1 is linked to Hyperbilirubinemia.