Journal
PHARMACOGENOMICS
Volume 12, Issue 10, Pages 1417-1427Publisher
FUTURE MEDICINE LTD
DOI: 10.2217/PGS.11.93
Keywords
cisplatin; DNA repair; ERCC1; nephrotoxicity; OCT2; organic cation transporter; polymorphisms
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Funding
- German Research Foundation [GRK1034]
- Fulbright US Student Program
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Aim: We investigated whether genetic polymorphisms may contribute to the interpatient variability of cisplatin-induced nephrotoxicity. Patients & methods: Polymorphisms in the candidate genes GSTM1, GSTT1, OCT1, OCT2, LARP2, ERCC1, XRCC1 and EPO were analyzed for associations with nephrotoxicity in 79 cancer patients receiving cisplatin-containing chemotherapy. Results: Higher cisplatin dose was associated with strongly decreased estimated glomerular filtration rates (eGFR) (r(2) = 0.205). Two highly genetically linked polymorphisms in the ERCC1 gene, 8092C>A and Asn118Asn, were significantly associated with change in eGFR, accounting for an additional 13% of interindividual variability. Homozygous carriers of the 8092A allele in ERCC1 showed no reduction in eGFR, compared with the 11.5% mean eGFR decrease in C allele carriers (p = 0.004). Homozygous carriers of the C allele of Asn118Asn showed no reduction in eGFR, compared with the 12.8% mean eGFR decrease seen in T allele carriers (p = 0.047). Polymorphisms in the other candidate genes were not associated with cisplatin-induced nephrotoxicity. Conclusion: Genetic polymorphisms in ERCC1 may be valuable predictors of cisplatin-induced nephrotoxicity.
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