RESUMO
<p><b>OBJECTIVE</b>To study the relationship between CYP1A1 genetic polymorphism and intrahepatic cholestasis of pregnancy (ICP) in Chengdu of China.</p><p><b>METHODS</b>MspI and Ile/Val genotypes of CYP1A1 gene were detected with polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) and allele-specific amplification-PCR (ASA-PCR) in a case-control study, including 100 cases of ICP and 100 controls.</p><p><b>RESULTS</b>There was no significant correlation between MspI polymorphism and ICP susceptibility (P>0.05). However, the Ile/Val+Val/Val genotypes of CYP1A1 significantly increased the risk of ICP (P=0.047, OR=1.768).</p><p><b>CONCLUSION</b>The Ile/Val polymorphism in exon 7 of CYP1A1 may be associated with the susceptibility of ICP in Chengdu. The MspI polymorphism of CYP1A1 is not associated with the risk of ICP in Chengdu.</p>