RT Journal
A1 Mitka M
T1 GEnes and intellectual disability
JF JAMA
JO JAMA
YR 2009
FD June 3
VO 301
IS 21
SP 2202
OP 2202
DO 10.1001/jama.2009.757
UL http://dx.doi.org/10.1001/jama.2009.757
AB 
The researchers sequenced 720 of the about 800 known genes on the X chromosome in 208 families affected by the condition. The 9 new genes can now be added to the approximately 80 previously identified genes involved in this group of intellectual disabilities, allowing for more comprehensive genetic counseling. The researchers cautioned, however, that most of the mutated genes responsible for XLMR have not been identified.