4 doctors weighed in:
If your sibling has down syndrome, is there a greater risk that your own baby will have down syndrome?
4 doctors weighed in

Dr. Amr Azim
Fertility Medicine
2 doctors agree
In brief: Depends
Two major types of down syndrome: 1.
Non-disjunction type related sometimes to older age of the mother; there is no risk to your baby 2. Translocation type meaning one chromosome is attached to another one: yes you could be normal but carry one chromosome on top of the other and pass that to your baby. This is easy to discover by testing your own chromosomes (a blood test).

In brief: Depends
Two major types of down syndrome: 1.
Non-disjunction type related sometimes to older age of the mother; there is no risk to your baby 2. Translocation type meaning one chromosome is attached to another one: yes you could be normal but carry one chromosome on top of the other and pass that to your baby. This is easy to discover by testing your own chromosomes (a blood test).
Dr. Amr Azim
Dr. Amr Azim
Thank
Dr. James Ferguson
Pediatrics
In brief: I wouldn't worry
By definition you don't have it, which is important.
Having it in a close relative raises your risk at most by 1%, which you must add to whatever your risk is for age.At 38, that is about 1%,so if you are looking at 2%, the choice is yours as to whether to freak out or not.A meeting with a clinical geneticist could explore this and any other hidden issue on both sides of the family. More info=btr

In brief: I wouldn't worry
By definition you don't have it, which is important.
Having it in a close relative raises your risk at most by 1%, which you must add to whatever your risk is for age.At 38, that is about 1%,so if you are looking at 2%, the choice is yours as to whether to freak out or not.A meeting with a clinical geneticist could explore this and any other hidden issue on both sides of the family. More info=btr
Dr. James Ferguson
Dr. James Ferguson
Thank
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