Novel approaches to gene expression analysis of active XXXX .

@entity1 @entity379 @entity792 @entity309
@entity309 ( @entity309 ) has a complex, poorly characterized pathophysiology. Modeling of transcriptosome behavior in pathologic specimens using microarrays allows molecular dissection of complex @entity792 . However, conventional analyses rely on identifying statistically significant differences in gene expression distributions between @entity1 and controls. Since the principal aspects of disease pathophysiology vary significantly among @entity1 , these analyses are biased. Genes with highly variable expression, those most likely to regulate and affect pathologic processes, are excluded from selection, as their distribution among healthy and affected individuals may overlap significantly. Here we describe a novel method for analyzing microarray data that assesses statistically significant changes in gene behavior at the population level. This method was applied to expression profiles of peripheral blood leukocytes from a group of @entity1 with polyarticular @entity309 and healthy control subjects. Results from this method are compared with those from a conventional analysis of differential gene expression and shown to identify discrete subsets of functionally related genes relevant to disease pathophysiology. These results reveal the complex action of the innate and adaptive immune responses in @entity1 and specifically underscore the role of @entity379 in disease pathophysiology. Discriminant function analysis of data from a cohort of @entity1 treated with conventional therapy identified additional subsets of functionally related genes; the results may predict treatment outcomes. While data from only 9 @entity1 and 12 healthy controls was used, this preliminary investigation of the inflammatory genomics of @entity309 illustrates the significant potential of utilizing complementary sets of bioinformatics tools to maximize the clinical relevance of microarray data from @entity1 with @entity792 , even in small cohorts.
