title: Mapping the new frontier: complex genetic disorders.
abstract: The remarkable achievements in human genetics over the years have been due to technological advances in gene mapping and in statistical methods that relate genetic variants to disease. Nearly every Mendelian genetic disorder has now been mapped to a specific gene or set of genes, but these discoveries have been limited to high-risk, variant alleles that segregate in rare families. With a working draft of the human genome now in hand, the availability of high-throughput genotyping, a plethora of genetic markers, and the development of new analytical methods, scientists are now turning their attention to common complex disorders such as diabetes, obesity, hypertension, and Alzheimer disease. In this issue, the JCI provides readers with a series dedicated to complex genetic disorders, offering a view of genetic medicine in the 21st century.
authors.affiliation: Gertrude H. Sergievsky Center and Taub Institute for Research on Alzheimer's Disease and the Aging Brain, Columbia University, New York, New York 10032, USA. rpm2@columbia.edu
authors.forename: Richard
authors.initials: R
authors.lastname: Mayeux
mesh_terms: D000483:Alleles; D005787:Gene Frequency; D030342:Genetic Diseases, Inborn / Q000235:genetics*; D014644:Genetic Variation; D015894:Genome, Human; D005838:Genotype; D006801:Humans; D015810:Linkage Disequilibrium; D020161:Physical Chromosome Mapping / Q000379:methods; D020641:Polymorphism, Single Nucleotide