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News

Illumina joins the 1000 Genomes Project international research consortium

Illumina : 12 June, 2008  (Company News)
Illumina, which is among three companies to have pioneered the development of new genome sequencing technologies, has joined the 1000 Genomes Project, an international effort to build the most detailed map to date of human genetic variation as a tool for medical research.
The new participants are: Illumina, San Diego, California, USA; 454 Life Sciences, a Roche company, Branford, Conecticutt, USA; and Applied Biosystems, an Applera business, Foster City, California, USA.

The 1000 Genomes Project, which was announced in January 2008, is an international research consortium that is creating a new map of the human genome that will provide a view of biomedically relevant DNA variations at a resolution unmatched by current resources.

Organizations that have already committed major support to the project are: the Beijing Genomics Institute, Shenzhen, China; the Wellcome Trust Sanger Institute, Hinxton, Cambridge, UK; and the National Human Genome Research Institute (NHGRI), part of the National Institutes of Health. The NHGRI-supported work is being done by the institute's Large-Scale Sequencing Network, which includes the Human Genome Sequencing Center at Baylor College of Medicine, Houston; the Broad Institute of MIT and Harvard, Cambridge, Massachusetts; and the Washington University Genome Sequencing Center at Washington University School of Medicine, St Louis.

'The additional sequencing capacity and expertise provided by the three companies in the pilot phase will enable us to explore the human genome with even greater depth and speed than we had originally envisioned, and will help us to optimize the design of the full study to follow,' said Richard Durbin, PhD, of the Wellcome Trust Sanger Institute, who is co-chair of the consortium. 'It is a win-win arrangement for all involved. The companies will gain an exciting opportunity to test their technologies on hundreds of samples of human DNA, and the project will obtain data and insight to achieve its goals in a more efficient and cost-effective manner than we could without their help.'

The genetic blueprints, or genomes, of any two humans are more than 99 percent the same. Still, the small fraction of genetic material that varies among people holds valuable clues to individual differences in susceptibility to disease, response to drugs and sensitivity to environmental factors.

The 1000 Genomes Project builds upon the International HapMap Project, which produced a comprehensive catalogue of human genetic variation - variation that is organized into neighborhoods called haplotypes. The HapMap catalogue laid the foundation for the recent explosion of genome-wide association studies that have identified more than 130 genetic variants linked to a wide range of common diseases, including type 2 diabetes, coronary artery disease, prostate and breast cancers, rheumatoid arthritis, inflammatory bowel disease and a number of mental illnesses.

The HapMap catalogue, however, only identifies genetic variants that are present at a frequency of 5 percent or greater. The catalog produced by the 1000 Genomes Project will map many more details of the human genome and how it varies among individuals, identifying genetic variants that are present at a frequency of 1 percent across most of the genome and down to 0.5 percent or lower within genes. The 1000 Genomes Project's high-resolution catalogue will serve to accelerate many future studies of people with specific illnesses.

'In some ways, this application of the new sequencing technologies is like building bigger telescopes,' said NHGRI director Francis S Collins, MD, PhD. 'Just as astronomers see farther and more clearly into the universe with bigger telescopes, the results of the 1000 Genomes Project will give us greater resolution as we view our own genetic blueprint. We'll be able to see more things more clearly than before and that will be important for understanding the genetic contributions to health and illness.'

The HapMap was based mainly on genotyping technology, in which genetic markers were used to broadly scan the genome. In contrast, the 1000 Genomes Project catalog will be built on sequencing technology, in which the genome is examined at the level of individual DNA letters, or bases. The increased resolution will enable the 1000 Genomes' map to provide researchers with far more genomic context than the HapMap, including more precise information about the genetic variants that might directly contribute to disease.

'We find that there is a lot of value in participating in international consortia; they produce large datasets that are valuable to the scientific and medical communities while promoting the rapid release of the data,' said Illumina vice president and chief scientist David Bentley, PhD, who participated in the International HapMap Project.

To enhance the production of the 1000 Genomes map, Illumina, 454 Life Sciences, and Applied Biosystems have agreed to sequence the equivalent of 75 billion DNA bases as part of the pilot phase. The human genome contains about three billion bases. Consequently, each company will contribute the equivalent of 25 human genomes over the next year, and additional sequence data over the project's expected three year timeline.

In its first phase, expected to last about a year, the 1000 Genomes Project is conducting three pilots that will be used to decide the best strategies for achieving the goals of the full-scale effort.

The first pilot involves sequencing the genomes of six people (two nuclear families) at high resolution; the second involves sequencing the genomes of 180 people at lower resolution; and the third involves sequencing the coding regions of 1,000 genes in about 1,000 people.

The full-scale project will involve sequencing the genomes of at least 1,000 people, drawn from several populations around the world.

The project will use samples from donors who have given informed consent for their DNA to be analysed and placed in public databases.

Most of these samples have already been collected, and any additional samples will come from specific populations. The data will contain no medical or personal identifying information about the donors.

Given the rapid pace of sequencing technology development, the cost of the entire effort is difficult to estimate, but is expected to be about $60 million. The sequence data provided by the three companies are estimated to be worth approximately $700,000 for the pilot phase.

Already, the 1000 Genomes Project has generated such vast quantities of data that the information is taxing the current capacity of public research databases. Since the first phase was begun in late January, project participants have produced and deposited some 240 billion bases of genetic information with the European Bioinformatics Institute and the National Center for Biotechnology Information, a part of the US National Library of Medicine. Data generated by the 1000 Genomes Project also will be distributed from a mirror site at BGI Shenzhen.

Along with their contributions of sequencing capacity, the companies, like all other project participants, have agreed to comply with the open access policies established by the 1000 Genomes Project Steering Committee. Those policies include rapid public release of the data, including project participants having no early access to the data; an intellectual property policy that precludes any participants from controlling the information produced by the project; regular progress reporting; and coordination of scientific publications with the rest of the consortium.
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