Title |
Polymorphisms in the ABCB1 gene and effect on outcome and toxicity in childhood acute lymphoblastic leukemia
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Published in |
The Pharmacogenomics Journal, January 2015
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DOI | 10.1038/tpj.2014.81 |
Pubmed ID | |
Authors |
J Gregers, H Gréen, I J Christensen, K Dalhoff, H Schroeder, N Carlsen, S Rosthoej, B Lausen, K Schmiegelow, C Peterson |
Abstract |
The membrane transporter P-glycoprotein, encoded by the ABCB1 gene, influences the pharmacokinetics of anti-cancer drugs. We hypothesized that variants of ABCB1 affect outcome and toxicity in childhood acute lymphoblastic leukemia (ALL). We studied 522 Danish children with ALL, 93% of all those eligible. Risk of relapse was increased 2.9-fold for patients with the 1199GA variant versus 1199GG (P=0.001), and reduced 61% and 40%, respectively, for patients with the 3435CT or 3435TT variants versus 3435CC (overall P=0.02). The degree of bone marrow toxicity during doxorubicin, vincristine and prednisolone induction therapy was more prominent in patients with 3435TT variant versus 3435CT/3435CC (P=0.01/P<0.0001). We observed more liver toxicity after high-dose methotrexate in patients with 3435CC variant versus 3435CT/TT (P=0.03). In conclusion, there is a statistically significant association between ABCB1 polymorphisms, efficacy and toxicity in the treatment of ALL, and ABCB1 1199G>A may be a new possible predictive marker for outcome in childhood ALL.The Pharmacogenomics Journal advance online publication, 13 January 2015; doi:10.1038/tpj.2014.81. |
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Geographical breakdown
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Germany | 3 | 3% |
Serbia | 1 | <1% |
Brazil | 1 | <1% |
Unknown | 98 | 95% |
Demographic breakdown
Readers by professional status | Count | As % |
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Student > Ph. D. Student | 24 | 23% |
Researcher | 14 | 14% |
Student > Master | 13 | 13% |
Student > Bachelor | 8 | 8% |
Student > Postgraduate | 7 | 7% |
Other | 14 | 14% |
Unknown | 23 | 22% |
Readers by discipline | Count | As % |
---|---|---|
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Biochemistry, Genetics and Molecular Biology | 16 | 16% |
Agricultural and Biological Sciences | 14 | 14% |
Pharmacology, Toxicology and Pharmaceutical Science | 9 | 9% |
Chemistry | 3 | 3% |
Other | 9 | 9% |
Unknown | 26 | 25% |