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In 95% or better of the cases studied, individuals having Williams syndrome are missing
the elastin gene from one of their two copies of chromosome number seven. In Williams
syndrome, there are at least 15 genes missing from one copy of chromosome
seven, but the first one discovered, the elastin gene, is the one that is used in the
current FISH diagnostic test.
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Please send mail to williamssyndrome@insightbb.com with questions or comments about this web site.For additional information about Williams syndrome, please send an e-mail to hlenhoff@uci.edu.For contact with other Williams syndrome families --In the USA: please send e-mail to info@williams-syndrome.orgOutside the USA:
please visit our
International Williams Syndrome Support Groups page for
contact information.
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