In this book leading experts provide the state-of-the-art in the emerging and exciting field of pharmacogenomics. The multitude of ways that pharmacogenomics can be approached and applied reflects the possibilities brought about by the wealth of data generated by the Human Genome Project, in conjunction with parallel advances in bioinformatics and biotechnology. Procedures that are now routine were a decade ago thought to be impossible. We now study the simultaneous expression of thousands of genes and test thousands of discrete gene variations (single nucleotide polymorphisms) in one sample