期刊
PHARMACOGENOMICS JOURNAL
卷 17, 期 4, 页码 337-343出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/tpj.2016.17
关键词
-
资金
- National Medical Research Council, Singapore [NMRC/0814/2003]
This study investigated the impact of ABCB5, ABCC5 and RLIP76 polymorphisms on doxorubicin pharmacokinetics in Asian breast cancer patients (N = 62). Direct sequencing was performed to screen for previously identified ABCC5 polymorphisms as well as polymorphisms in the exons and exon-intron boundaries of ABCB5 and RLIP76 genes. Genotype-phenotype correlations were analyzed using Mann-Whitney U-test. The homozygous variant allele at the ABCC5 g.+7161G4A (rs1533682) locus was significantly associated with higher doxorubicin clearance (g.+7161AA vs g.+7161GG, CL/BSA (L h(-1) m(-2)): 30.34 (25.41-33.60) vs 22.46 (15.04-49.4), P = 0.04). Homozygosity for the reference allele at the ABCC5 g.-1679T4A locus was associated with significantly higher doxorubicinol exposure (g.-1679TT vs g.-1679TA, AUC(0-infinity)/dose/BSA (hm(-5)): 15.48 (6.18-67.17) vs 8.88 (3.68-21.71), P = 0.0001). No significant influence of the three newly identified ABCB5 polymorphisms (c. 2T>C, c.343A>G and c. 1573G>A) on doxorubicin pharmacokinetics was observed. No polymorphisms were identified in the RLIP76 gene. These findings suggest that ABCC5 polymorphisms may explain partially the interpatient variability in doxorubicin disposition.
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