Gene expression informatics with an automatic histogram-type membership function for non-uniform data
| Autor: | Satoru Ito, Akito Daiba, Tsutomu Takeuchi, Masafumi Yohda |
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| Rok vydání: | 2010 |
| Předmět: | |
| Zdroj: | Chem-Bio Informatics Journal. 10:13-23 |
| ISSN: | 1347-0442 1347-6297 |
| Popis: | The non-uniformity of gene expression data is one of the factors that make gene expression analysis difficult. Gene expression data often do not follow a normal distribution but rather various distributions within each group. Thus, it is impossible to apply basic statistical techniques such as the t-test. In this study, we have developed an analysis method for gene expression data obtained by microarrays using a fuzzy logic algorithm with original membership functions. The method automatically evaluates the data from a histogram of gene expression information for a patient group. Using this method, we predicted the efficacy of an anti-TNF-α treatment for rheumatoid arthritis. We created a prediction model for the effects of 14 weeks of anti-TNF-α treatment based on the gene expression data from the peripheral blood of rheumatoid arthritis patients before the treatment. The model had a predictive success of 89% in the model-establishing data group, 94% in the training group, and 89% in the validation group. The results suggest that the method presented here could be an extremely effective tool for gene expression analysis. |
| Databáze: | OpenAIRE |
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