Journal
PHARMACOGENOMICS JOURNAL
Volume 7, Issue 4, Pages 282-289Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/sj.tpj.6500419
Keywords
aldo-keto reductase 1C3 (AKR1C3); 17 beta-hydroxysteroid dehydrogenase type 5 (17 beta-HSD5); single nucleotide polymorphism (SNP); testosterone; androgen metabolism
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Genetic variation in the androgen metabolizing enzymes is important to identify and feature as they may influence the risk of prostate cancer and help clarify the etiology of the disease. Human 17 beta-hydroxysteroid dehydrogenase type 5 (AKR1C3) is highly expressed in the prostate gland and plays a major role in the formation and metabolism of androgens. We identified five novel polymorphisms in the AKR1C3 gene. One of those an A>G substitution in exon 2 that confers a Glu77Gly change occurred in 4.8% in Caucasians but was completely absent in Orientals. Interestingly, the testosterone level in serum was significantly lower in subjects with the Gly77 allele. A promoter A>G polymorphism was associated with significantly altered promoter activity in reporter constructs, but was not associated with any change in testosterone levels. In conclusion, the Glu77Gly polymorphism is associated with lower testosterone levels in serum.
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