The contribution of genetic variations of aryl hydrocarbon receptor pathway genes to male factor infertility.

Objective: To determine whether the polymorphisms in aryl hydrocarbon receptor (AHR), aryl hydrocarbon receptor repressor (AHRR), and aryl hydrocarbon receptor nuclear translocator (ARNT) genes are associated with male factor infertility.

Design: An association study.

Setting: University research laboratory and andrology clinic.