FG Syndrome Family Alliance, Inc.
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What are the signs of a carrier?
Some things to look for in the mothers are: cowlicks in the front of the hair, a history of difficulties in school, spelling phonetically (she may not recognize this in herself), a tendency to have ingrown toenails, constipation, or other "soft signs" of the condition. A mother of a child with FG Syndrome should dicuss their personal and family medical histories carefully with their geneticist, asking about these subtle signs to be absolutely sure that she is not a carrier before giving her a reduced recurrence risk. (If a woman is a carrier of an X-linked condition her sister would have a 50% chance to be a carrier, therefore she would have a 1 in 8 chance to have an affected male pregnanacy).
It is possible that rather than being passed through generations of mothers, there was at one point a father who had a mild case of FG Syndrome. In this case, he would pass the syndrome onto every single one of his daughters who would then be carriers. This would have no impact on his sons because he does not contribute his X chromosome to his male children. We have seen this situation in the FG Syndrome.
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Disclaimer: This page was not created by a medical professional. Any errors should
be reported immediately to info@fg-syndrome.org.FG Syndrome Family Alliance, Inc., 2009
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