<unk>  encephalopathy is estimated to comprise approximately 0.7- 1% of all cases of intellectual disability with over one million people expected to be affected worldwide. The<unk> Research Fund, a US patient advocacy group, reviewed all the studies that support these estimates. SRF pointed to a more recent study by Lopez-Riviera et al that predicts an incidence per 100,000 births of 6.107.
SYNGAP1-related intellectual disability
SYT1-associated neurodevelopmental disorder
MECP2 duplication syndrome
LMNA-related congenital muscular dystrophy
X-linked intellectual disability
X-linked spinal muscular atrophy type 2
Autosomal recessive spastic ataxia of Charlevoix-Saguenay
Foster Kennedy syndrome