Figure 2.

Separation of 103 unique studies included. We collected 103 studies which included heterogeneous types of NDDs. We were able to separate these into 107 distinct disorder cohorts, 81 cohorts by seizure type, 41 DEE cohorts, 21 cohorts by age at onset, and 109 sequencing technology cohorts. Abbreviations: ASD, autism spectrum disorder; DD, developmental delay; DEE, developmental epileptic encephalopathy; ES, exome sequencing; FE, focal epilepsy; GE & FE, combined generalized and focal epilepsy; GE, generalized epilepsy; ID, intellectual disability; panel, targeted gene panel sequencing; WS, West syndrome