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- DOI: 10.2217/pgs.11.114
- PMID: 22044414
- UKPMCID: 22044414
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Genetic and genomic predictors of anti-TNF response.
Prajapati, Rita; Plant, Darren; Barton, Anne
Pharmacogenomics. 2011;12(11):1571-85.
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Full-text held externally
- DOI: 10.2217/pgs.11.114
- PMID: 22044414
- UKPMCID: 22044414
Abstract
The introduction of anti-TNF therapy has dramatically improved the outlook for patients suffering from a number of inflammatory conditions including rheumatoid arthritis and inflammatory bowel disease. Despite this, a substantial proportion of patients (approximately 30-40%) fail to respond to these potentially toxic and expensive therapies. Treatment response is likely to be multifactorial; however, variation in genes or their expression may identify those most likely to respond. By targeted testing of variants within candidate genes, potential predictors of anti-TNF response have been reported; however, very few markers have replicated consistently between studies. Emerging genome-wide association studies suggest that there may be a number of genes with modest effects on treatment response rather than a few genes of large effect. Other potential serum biomarkers of response have also been explored including cytokines and autoantibodies, with antibodies developing to the anti-TNF drugs themselves being correlated with treatment failure.