Hypoxia regulates ATG12 through miR‐378‐3p, participating in nerve cell apoptosis. N2A cells were grouped as Ctrl, hypoxia, hypoxia+miR‐NC+OE‐NC, hypoxia+miR‐378‐3p+OE‐NC, hypoxia+miR‐NC+OE‐ATG12 and hypoxia+miR‐378‐3p+OE‐ATG12. A, CCK‐8 assay was performed to detect cell viability; B, LDH assay was performed to detect the membrane integrity; C, Western blot analysis was performed to detect cleaved caspase‐3 expression