of cells in G1 (62.3±0.2% and 61.0±0.1%, P>0.3), S (24.6±0.1 and 24.9±0.1, P>0.7) and G2 (6.5±0.03 and 6.5±0.02%, P>0.3) phases did not differ between control and SZ hiPSC forebrain NPCs (Supplementary Figure 3D). Regional patterning between NPC lines appears to be very similar, and NPC populations derived from control or SZ hiPSC NPCs lines do not appear to be either more proliferative or more neuronal. Although inter-NPC line differences in staining for these cortical neural stem cell and immature neurons markers did occur, hiPSC NPCs did not appear to vary by diagnosis.