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With an estimated 30,000 genes containing 3 billion base
pairs of DNA in the human genome, finding the genes that influence
our susceptibility to disease is a monumental task, part of
which includes complicated statistical analyses of genetic
data from large family groups. As one can imagine, these analyses
can be incredibly labor intensive and time consuming, but
they have been made easier and faster by the world-renowned
team of statistical geneticists at SFBR.
The development of new statistical methods for genetic epidemiological
research, and in particular for genetic linkage analysis,
has been a long-term and highly successful focus of research
in SFBR's Department of Genetics. Departmental scientists
were the first to perform statistical genetic analyses in
parallel using a computer cluster, partitioning complex analyses
among different computers in order to increase the speed with
which those analyses could be completed.
Today, SFBR is home to the world's largest computer cluster
devoted to statistical genetic analysis. Housed in the AT&T
Genomics Computing Center, which was dedicated in June
2003, SFBR's "computer ranch" currently contains 1,500 computer
processors working in parallel to crunch out the data necessary
to help scientists find disease-influencing genes. While
this resource has room to grow, it already has dramatically
increased the speed at which scientists can complete their
research. Complicated analyses that once took months can
now be completed in minutes, greatly increasing the power
of discovery for SFBR geneticists – and their more
than 200 collaborators at 80 institutions worldwide.
The very methods employed by these computers also were designed
by SFBR scientists. The Foundation's statistical genetics
group, led by Dr. John Blangero, uses novel mathematical
methods that take advantage of genetic information inherent
in large extended families. With grant funding from the
NIH's National Institute for Mental Health, they incorporated
those methods in a computer software package known as SOLAR
(Sequential Oligogenic Linkage Analysis Routines), which
is now registered to more than 2,300 users worldwide to
analyze data obtained from large families in which diseases
appear to be inherited. The SOLAR
software is freely distributed through SFBR's Web site.
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