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Affymetrix Genotyping Arrays Help Researchers Understand Genetic
Basis of Disease
Two Plenary Sessions and Over 20 New Genetic Studies Using Affymetrix
Technology to be Presented at American Society of Human Genetics Annual Meeting
SANTA CLARA, Calif., Oct. 27 /PRNewswire-FirstCall/ -- Today, Affymetrix, Inc.
(NASDAQ:AFFX) announced that researchers attending the American Society of
Human Genetics (ASHG) annual meeting this week will present more than 20
studies using Affymetrix GeneChip(R) DNA analysis technology to identify new
genetic links to over a dozen different conditions, including prostate cancer,
Alzheimer's Disease and neural tube defects. In addition, two of the six major
plenary presentations at ASHG will feature groundbreaking research using
Affymetrix technology, enabling scientists to look at the underlying genetics
of complex disease in more detail than ever before.
Presentations using Affymetrix technology at the ASHG meeting in Toronto
include:
-- Prostate Cancer: The GeneChip Mapping 10K Array allowed researchers to
identify four regions of DNA linked to prostate cancer that were missed
by a previous microsatellite scan. In a comparison between the 10K and
microsatellite markers, genome scans using the 10K were faster and gave
more genetic information.
"Overall, the quality of the SNP genotypes generated using the Mapping
10K was excellent," said Daniel Schaid, Ph.D., Department of Health
Sciences Research, Mayo Clinic, Rochester, who led the prostate cancer
research. "We were able to complete the analytical phase of the
project in a matter of months using microarray SNP-based genotyping,
compared with years for microsatellite-based genotyping."
-- Alzheimer's Disease: Scientists from Duke University, Vanderbilt
University, and the Translational Genomics Research Institute used the
Mapping 10K to identify genes that had not been previously linked to
Alzheimer's Disease. Because of limitations in older technologies, the
newfound disease linkages to chromosomes 2, 4, 5, and 8 had until now
gone undetected.
-- Neural Tube Defects: Researchers from Duke University used the Mapping
10K to identify the first genetic link to neural tube defects. This
often fatal deformity affects 2,500 babies every year in the United
States alone. The research team anticipates using these new findings
to identify susceptibility genes for early screening and improved
neural tube defect treatment.
"Researchers are doing extraordinary things with the Mapping 10K and are now
using the Mapping 100K to start performing whole genome association studies,
research that simply wasn't possible before. Collaborators like ParAllele
BioScience and Perlegen Sciences are breaking new ground in large-scale genetic
analysis using Affymetrix technology, and this work will help us develop
next-generation Affymetrix genotyping products," said Greg Yap, Vice President,
DNA Analysis Products, Affymetrix. "Because researchers need more information
to drive new discovery, we are continuing to create new easy-to-use products,
including arrays to genotype up to 500,000 SNPs that will be available in
2005."
Numerous presentations made at ASHG represent the wide range of GeneChip
products and technologies that customers are using to study genetic disease:
-- Perlegen Sciences has pioneered advanced use of Affymetrix microarray
technology for large-scale genotyping and resequencing, and was
recently selected to provide approximately 70 percent of the genotype
data for the International HapMap Project. Perlegen's plenary ASHG
presentation (Plenary No. 4) will describe allele frequencies and
correlation structure for nearly 1.6 million SNPs in each of 71
unrelated individuals who were genotyped using Affymetrix arrays.
-- The Mapping 10K Array has become a definitive tool for genome-wide
linkage studies. The array, featured in nearly two dozen ASHG
presentations, has been used to measure changes in chromosomal copy
number, compare genetics of different human populations, and find genes
linked to conditions including cancer, neurological disorders,
developmental disorders, and metabolic disorders.
-- The Mapping 100K Array Set is the first in a family of Affymetrix
products that enable genome-wide association studies. Over 75 academic,
pharmaceutical and biotechnology customers are now using the 100K. At
this year's ASHG meeting, customers including GlaxoSmithKline and
Jurilab will present work using the 100K in pharmaceutical research.
Other 100K presentations at ASHG will include reports on association
studies, population genetics, and genome structure. Affymetrix
scientists at the conference will also discuss the future of
large-scale genotyping using more than 100,000 SNPs.
-- ParAllele MegAllele(TM) Genotyping Reagents are now available in kits
developed collaboratively with Affymetrix. These kits offer a powerful
and cost-effective solution for customers to genotype any SNPs they
choose in their own labs. ParAllele and Baylor College of Medicine
will present a plenary session (Plenary No. 3) describing high-density
genotyping and mapping in chromosome 12 using MegAllele reagents and
Affymetrix arrays.
-- CustomSeq(TM) Resequencing Arrays will also be featured in research
presented at ASHG. Researchers from the University of Tuebingen and
the Gregor Mendel Laboratory, Germany, will report using the array to
sequence the complete CFTR gene, allowing rapid identification of the
1,000 or more mutations known to cause cystic fibrosis. Additionally,
researchers from the University of Michigan and the National Institutes
of Health will report using CustomSeq to identify gene mutations known
to cause autosomal recessive retinitis pigmentosa.
About Affymetrix:
Affymetrix is a pioneer in creating breakthrough tools that are driving the
genomic revolution. By applying the principles of semiconductor technology to
the life sciences, Affymetrix develops and commercializes systems that enable
scientists to improve quality of life. The Company's customers include
pharmaceutical, biotechnology, agrichemical, diagnostics and consumer products
companies as well as academic, government and other non-profit research
institutes. Affymetrix offers an expanding portfolio of integrated products and
services, including its integrated GeneChip brand platform, to address growing
markets focused on understanding the relationship between genes and human
health. Additional information on Affymetrix can be found at
http://www.affymetrix.com/.
All statements in this press release that are not historical are
"forward-looking statements" within the meaning of Section 21E of the
Securities Exchange Act as amended, including statements regarding Affymetrix'
"expectations," "beliefs," "hopes," "intentions," "strategies" or the like.
Such statements are subject to risks and uncertainties that could cause actual
results to differ materially for Affymetrix from those projected, including,
but not limited to risks of the Company's ability to achieve and sustain higher
levels of revenue, higher gross margins, reduced operating expenses,
uncertainties relating to technological approaches, manufacturing, product
development (including uncertainties relating to the development of the 500K
SNP microarray), market acceptance (including uncertainties relating to product
development, use and market acceptance of the GeneChip(R) Mapping 10K Array,
GeneChip(R) Mapping 100K Array or GeneChip CustomSeq(TM) Resequencing Array),
personnel retention, uncertainties related to cost and pricing of Affymetrix
products, dependence on collaborative partners, uncertainties relating to sole
source suppliers, uncertainties relating to FDA and other regulatory approvals,
competition, risks relating to intellectual property of others and the
uncertainties of patent protection and litigation. These and other risk factors
are discussed in Affymetrix' Form 10-K for the year ended December 31, 2003 and
other SEC reports, including its Quarterly Reports on Form 10-Q for subsequent
quarterly periods. Affymetrix expressly disclaims any obligation or undertaking
to release publicly any updates or revisions to any forward-looking statements
contained herein to reflect any change in Affymetrix' expectations with regard
thereto or any change in events, conditions, or circumstances on which any such
statements are based.
DATASOURCE: Affymetrix, Inc.
CONTACT: media, Wes Conard, Associate Director, Public Relations, +1-
408-731-5791, or investors, Doug Farrell, Vice President, Investor Relations,
+1-408-731-5285, both of Affymetrix
Web site: http://www.affymetrix.com/