A. All genes represented in the microarray dataset, except those
with average log2 intensity <4.5, are projected onto the first two
PCs, and shown as a smoothed scatter plot. The gray-scale intensity reflects the
local density of genes. A total of 483 genes from the SFARI autism gene database
represented in the microarray dataset (asterisks) are overlaid. A subset of
these genes were manually scored by experts by considering strength of existing
evidence, and these scored genes are distinguished using different colors. A
subset of syndromic ASD genes and the five strong candidate genes are
highlighted.
B. The percentage of scored genes in each group with a positive or
negative DAMAGES score (D-score) is shown. The color codes are the same as in
(A). The number of genes in each group is indicated in the
parentheses following the gene categories.