| Literature DB >> 17180579 |
Hiroyuki Imanishi1, Noboru Okamura2, Mariko Yagi2, Yukari Noro3, Yuka Moriya3, Tsutomu Nakamura3, Akira Hayakawa1, Yasuhiro Takeshima1, Toshiyuki Sakaeda3, Masafumi Matsuo1, Katsuhiko Okumura4,5.
Abstract
Methotrexate is administered in high doses to treat childhood acute lymphoblastic leukemia and malignant lymphoma. Hepatotoxicity and bone marrow suppression often limit its use, however. The objective of this study was to determine the genetic polymorphisms associated with the hepatotoxicity and elimination of methotrexate. Genetic polymorphisms of glutathione S-transferase (GST) genes including GSTT1 positive/null, GSTM1 positive/null, and GSTP1 A313G, and genes for reduced folate carrier 1 G80A (RFC1 G80A), methylenetetrahydrofolate reductase C677T (MTHFR C677T), and breast cancer resistant protein C421A (BCRP C421A) were determined for 26 patients by the polymerase chain reaction (PCR) method or by direct sequencing. A high frequency of hepatotoxicity (P = 0.035) was observed for patients with GSTM1 positive and RFC1 AA(80), and serum concentrations of methotrexate 48 h after the start of infusion were higher for patients with the TT(677) genotype of MTHFR (P = 0.028). In conclusion, GSTM1 positive/null and RFC1 G80A polymorphisms could be predictors for hepatotoxicity, and the MTHFR C677T polymorphism is associated with elimination of methotrexate.Entities:
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Year: 2006 PMID： 17180579 DOI： 10.1007/s10038-006-0096-z
Source DB: PubMed Journal: J Hum Genet ISSN： 1434-5161 Impact factor: 3.172