To verify roles of ER stress in GPT2‐associated cell late apoptosis and response to CSE, we pretreated cellNC or celloeGPT2 with the ER stress inhibitor 4‐phenylbutyric acid (4‐PBA) and found that 4‐PBA deceased the cell apoptotic number in cellNC after CSE challenge, whilst in celloeGPT2 after vehicle or CSE (Figure 7I). Here, GPT2 is linked to psychosocial stress measurement.