SMAD4 and autism: There are known links between fusion transcripts and disease (Oliver et al., 2019), and a number of disease-associated genes were involved in fusion events (autism: n = 8, e.g., ELAC1-SMAD4; Figure 4A; SZ: n = 5, e.g., GDPD3-MAPK3; Figure 4B; autism- and SZ-associated: n = 1, e.g., FOXG1-LINC01551; Figure 4C).