TY - JOUR A1 - Akilesh, Shreeram A1 - Shaffer, Daniel J. A1 - Roopenian, Derry T1 - Customized Molecular Phenotyping by Quantitative Gene Expression and Pattern Recognition Analysis Y1 - 2003/07/01 JF - Genome Research JO - Genome Research SP - 1719 EP - 1727 DO - 10.1101/gr.533003 VL - 13 IS - 7 UR - http://genome.cshlp.org/content/13/7/1719.abstract N2 - Description of the molecular phenotypes of pathobiological processes in vivo is a pressing need in genomic biology. We have implemented a high-throughput real-time PCR strategy to establish quantitative expression profiles of a customized set of target genes. It enables rapid, reproducible data acquisition from limited quantities of RNA, permitting serial sampling of mouse blood during disease progression. We developed an easy to use statistical algorithm—Global Pattern Recognition—to readily identify genes whose expression has changed significantly from healthy baseline profiles. This approach provides unique molecular signatures for rheumatoid arthritis, systemic lupus erythematosus, and graft versus host disease, and can also be applied to defining the molecular phenotype of a variety of other normal and pathological processes. ER -