Test Significance

If you have any doubts that your child may have Williams syndrome, the FISH test will give you a clear cut answer in most cases.

It may be possible, however, that an individual has most of the characteristics of Williams syndrome yet does not show that an elastin gene is missing. In such cases, only an experienced medical geneticist will be able to assess whether or not the questioned individual may have Williams syndrome.

You should also realize that it is extremely unlikely that you, your spouse, and your other children also have Williams syndrome. It is also unlikely that your other children have any greater chance of having children with Williams syndrome than anyone from the general population.

On the other hand, if your Williams child plans to become a parent, you should know that there is a 50/50 chance that his or her child will have Williams syndrome. If such a situation should arise, consult the obstetrician about using the FISH test for elastin for prenatal testing of the embryonic cells.

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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.org

Outside the USA: please visit our International Williams Syndrome Support Groups page for contact information.