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PubMed- Using gene expression data to identify certain gastro-intestinal diseases.


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Posted 23 November 2012 - 07:45 AM

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Using gene expression data to identify certain gastro-intestinal diseases.

J Clin Bioinforma. 2012 Nov 21;2(1):20

Authors: Crooke PS, Tossberg JT, Horst SN, Tauscher JL, Henderson MA, Beaulieu DB, Schwartz DA, Olsen NJ, Aune TM

Abstract
ABSTRACT: BACKGROUND: Inflammatory bowel diseases, ulcerative colitis and Crohn's disease are considered to be of autoimmune origin, but the etiology of irritable bowel syndrome remains elusive. Furthermore, classifying patients into irritable bowel syndrome and inflammatory bowel diseases can be difficult without invasive testing and holds important treatment implications. Our aim was to assess the ability of gene expression profiling in blood to differentiate among these subject groups. METHODS: Transcript levels of a total of 45 genes in blood were determined by quantitative real-time polymerase chain reaction (RT-PCR). We applied three separate analytic approaches; one utilized a scoring system derived from combinations of ratios of expression levels of two genes and two different support vector machines. RESULTS: All methods discriminated different subject cohorts, irritable bowel syndrome from control, inflammatory bowel disease from control, irritable bowel syndrome from inflammatory bowel disease, and ulcerative colitis from Crohn's disease, with high degrees of sensitivity and specificity. CONCLUSIONS: These results suggest these approaches may provide clinically useful prediction of the presence of these gastro-intestinal diseases and syndromes.

PMID: 23171526 [PubMed - as supplied by publisher]



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