5 doctors weighed in:

If my sister's child has cf, what are the chances that my child will have cf?

5 doctors weighed in
Dr. James Ferguson
Pediatrics
3 doctors agree

In brief: A worthy question

If this bothers you, have a test run to see if you are an asymptomatic carrier of the CF gene.
(you have 50% risk of it) If not, you cannot have CF kids.If so, your spouse can be screened also.If he is not, no CF kids.If you both are, the risk would be the same as your sisters with 1/4 chance with each pregnancy.

In brief: A worthy question

If this bothers you, have a test run to see if you are an asymptomatic carrier of the CF gene.
(you have 50% risk of it) If not, you cannot have CF kids.If so, your spouse can be screened also.If he is not, no CF kids.If you both are, the risk would be the same as your sisters with 1/4 chance with each pregnancy.
Dr. James Ferguson
Dr. James Ferguson
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Dr. Derrick Lonsdale
Preventive Medicine

In brief: Slight to zero

You could be a carrier i.
e. One gene only. Unless your husband is a carrier ( most unlikely unless distantly related), you have two chances in four of having a child who is also a carrier. Even if you are a carrier (because you came from the same parents as your sister) you will never have a CF child unless as above.

In brief: Slight to zero

You could be a carrier i.
e. One gene only. Unless your husband is a carrier ( most unlikely unless distantly related), you have two chances in four of having a child who is also a carrier. Even if you are a carrier (because you came from the same parents as your sister) you will never have a CF child unless as above.
Dr. Derrick Lonsdale
Dr. Derrick Lonsdale
Thank
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