Thiopurine methyltransferase phenotyping and genotyping in clinical practice preferred access arrangement

738 18 1797 6 2591 document 1797 Graham10MPhil.pdf application/pdf e50a575cd872d2b17c0b1bbe55318e36 MD5 2640114 2011-07-19 16:22:39 http://etheses.bham.ac.uk//id/eprint/738/1/Graham10MPhil.pdf 738 1 1 application/pdf application/pdf en public

Graham10MPhil.pdf

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http://eprints.org/relation/isVersionOf http://etheses.bham.ac.uk/id/document/1797 http://eprints.org/relation/isVolatileVersionOf http://etheses.bham.ac.uk/id/document/1797 http://eprints.org/relation/isIndexCodesVersionOf http://etheses.bham.ac.uk/id/document/1797 archive 4031 disk0/00/00/07/38 2010-06-11 13:51:49 2019-01-23 09:52:45 2011-07-19 16:22:39 thesis show 0 Graham Valerie Eggo Margaret Berg Jonathon University of Birmingham Thiopurine methyltransferase phenotyping and genotyping in clinical practice preferred access arrangement unpub R1 10col_life Thiopurine methyltransferase (TPMT) metabolises the widely prescribed thiopurine drugs. The activity of this enzyme varies between individuals and this can influence treatment success. Rapid and accurate assays of TPMT and 6TGN, the active thiopurine metabolites, are increasingly recognised as valuable clinical tools, to guide dosing and treatment. This work examines and develops methods for determining a patient's TPMT status and measuring 6TGN levels, adapting them for analysis using whole blood rather than washed red blood cell preparations. The advantages and limitations of these new assays in practice are investigated, which clearly shows that the more rapid new methods have increased clinical significance and utility. Experimental work and research provides an increased understanding of factors influencing determination and significance of a patient's TPMT status and thiopurine metabolite levels. This includes possible misclassification of TPMT status when expressing results in relation to patient haemoglobin and a longitudinal study of TPMT activity of patients commencing thiopurine therapy which demonstrates no enzyme induction. 2010-07 2009-10 graduation eng This unpublished thesis/dissertation is copyright of the author and/or third parties. The intellectual property rights of the author or third parties in respect of this work are as defined by The Copyright Designs and Patents Act 1988 or as modified by any successor legislation. Any use made of information contained in this thesis/dissertation must be in accordance with that legislation and must be properly acknowledged. Further distribution or reproduction in any format is prohibited without the permission of the copyright holder. Sandwell and West Birmingham NHS Trust public 174 University of Birmingham School of Biosciences m_ph other 2010-07 graduation