Fujimoto Naohiro
   Department   School of Medicine  Urology, Clinical Medical Sciences
Article types 不明
Language English
Peer review Non peer reviewed
Title Polymorphisms of the androgen transporting gene SLCO2B1 may influence the castration resistance of prostate cancer and the racial differences in response to androgen deprivation.
Journal Formal name:Prostate cancer and prostatic diseases
Abbreviation:Prostate Cancer Prostatic Dis
ISSN code:14765608/13657852
Domestic / ForeginForegin
Volume, Issue, Page 16(4),336-40頁
Author and coauthor Fujimoto N, Kubo T, Inatomi H, Bui H T T, Shiota M, Sho T, Matsumoto T
Publication date 2013/12
Summary BACKGROUND:Organic anion-transporting polypeptides (OATPs) encoded by SLCO mediate the cellular uptake of many compounds, including androgens. SLCO1B3 and SLCO2B1 are polymorphic, and single-nucleotide polymorphisms of those genes alter androgen transport efficiency. We aimed to investigate the association between genetic variations in SLCOs and the progression to castration-resistant prostate cancer (CRPC).METHODS:We studied the progression to CRPC for the SLCO1B3 rs4149117 and SLCO2B1 rs12422149 genotypes in 87 prostate cancer patients who received androgen deprivation therapy (ADT). Data were analyzed using the χ(2) test, Kaplan-Meier survival analysis and Cox proportional hazard model.RESULTS:SLCO3B1 genotypes were not significantly associated with the time to progression (TTP); however, patients carrying the active androgen transport SLCO2B1 genotype (GG allele) exhibited a median TTP that was 7 months shorter than that of patients with impaired androgen-transporting activity SLCO2B1 polymorphisms (GA/AA alleles) (10.0 vs 17.0 months, P=0.004). Active androgen transport genotypes of SLCO2B1 (GG allele) occurred more frequently in African and Caucasian populations than in Japanese and Han Chinese populations (P<0.001).CONCLUSIONS:These data suggest that SLCO2B1 rs12422149 variants could provide prognostic value for prostate cancer patients treated with ADT and influence ethnic differences in response to ADT. Active androgen import may be one of the underlying mechanisms of resistance to ADT, and androgen-transporting systems could provide novel biomarkers and targets for CRPC treatment.
DOI 10.1038/pcan.2013.23
PMID 23896625