[Association of cytochrome P4502D6 gene polymorphism with the susceptibility of heroin spongiform leucoencephalopathy].

OBJECTIVE: To elucidate the relation between cytochrome P4502D6 (CYP2D6) gene polymorphism and the susceptibility of heroin spongiform leucoencephalopathy (HSLE).
METHODS: With polymerase chain reaction-restriction fragment length polymorphism technique, the cytochrome P4502D6 gene polymorphisms were analyzed in HSLE cases and control subjects.
RESULTS: The frequencies of CYP2D6 (CYP2D6/C188, CYP2D6/L2938, CYP2D6/G4268) gene mutations were higher in HSLE patients than in the controls.
CONCLUSION: The CYP2D6 gene mutation is associated with a high risk of HSLE.