The impact of ABCC11 polymorphisms on the risk of early-onset fluoropyrimidine toxicity

Hamzic, Seid; Wenger, N; Fröhlich, Tanja; Joerger, M; Aebi, Stefan; Largiadèr, Carlo Rodolfo; Amstutz, Ursula (2017). The impact of ABCC11 polymorphisms on the risk of early-onset fluoropyrimidine toxicity. Pharmacogenomics journal, 17(4), pp. 319-324. Nature Publishing Group 10.1038/tpj.2016.23

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A missense variant (c.1637C>T, T546M) in ABCC11 encoding the MRP8 (multidrug resistance protein 8), a transporter of 5-fluorodeoxyuridine monophosphate, has been associated with an increased risk of 5-fluorouracil-related severe leukopenia. To validate this association, we investigated the impact of the ABCC11 variants c.1637C>T, c.538G>A and c.395+1087C>T on the risk of early-onset fluoropyrimidine-related toxicity in 514 cancer patients. The ABCC11 variant c.1637C>T was strongly associated with severe leukopenia in patients carrying risk variants in DPYD, encoding the key fluoropyrimidine-metabolizing enzyme dihydropyrimidine dehydrogenase (odds ratio (OR): 71.0; 95% confidence interval (CI): 2.5-2004.8; Pc.1637C>T*DPYD=0.013). In contrast, in patients without DPYD risk variants, no association with leukopenia (OR: 0.95; 95% CI: 0.34-2.6) or overall fluoropyrimidine-related toxicity (OR: 1.02; 95% CI: 0.5-2.1) was observed. Our study thus suggests that c.1637C>T affects fluoropyrimidine toxicity to leukocytes particularly in patients with high drug exposure, for example, because of reduced fluoropyrimidine catabolism.

Item Type:

Journal Article (Original Article)


04 Faculty of Medicine > Department of Haematology, Oncology, Infectious Diseases, Laboratory Medicine and Hospital Pharmacy (DOLS) > Institute of Clinical Chemistry

UniBE Contributor:

Hamzic, Seid, Fröhlich, Tanja, Aebi, Stefan, Largiadèr, Carlo Rodolfo, Amstutz, Ursula


600 Technology > 610 Medicine & health




Nature Publishing Group




Ursula Amstutz

Date Deposited:

24 May 2016 09:27

Last Modified:

05 Dec 2022 14:54

Publisher DOI:


PubMed ID:



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