Nov 28, 2006 20:49
This is what he has:
Mosaic Down syndrome -- A form of Down syndrome in which a person typically has 2 types of cells, one with 46 chromosomes and the other with 47, including an additional chromosome 21 (typical trisomy 21).
The rate of autism per live births is 31/10,000. The rate of Down Syndrome is 10/10,000. Mosaic Down Symdrome makes up 2-3% of Down Syndrome cases.
So, basically, my brother has hit the fucking jackpot.