mosaic down syndrome

Claire - posted on 01/22/2011 ( 3 moms have responded )




the doctors think my 5 month old son has mosaic down syndrome i have never heard of it before i was wondering if there is anyone who could help me thanks


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Andi - posted on 04/15/2011




My son has mosaic Down syndrome. It's a more rare type of Ds (2-3% of Ds cases are mosaic). It differs in that with "regular" Ds, all of the cells are affected (i.e., have an extra chromosome). With mosaic Ds, that isn't the case - only a percentage of cells are affected (that percentage varies from person to person, and also within a person, so the percentage of affected blood cells may be different from the skin cells, etc.) Practically speaking, mosaic Ds tends, on average, to be a milder form, but that doesn't guarantee a better outcome for any one individual.

Stephanie - posted on 04/13/2011




In mosaic downs only 1/2 cells will have the extra chromosome 21. From what Ive read they tend to have an higher IQ and less physical features.

[deleted account]

Your son will need to get a chromosomal test, in other words, they will need to get blood drawn to diagnose him with DS and then see which type of DS it is, whether he has mosaic or not.

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