EIF5A and Intellectual disability: Several roles of EIF5A have been reported; for example, neuronal apoptosis is regulated by EIF5A/p53 (Li et al., 2004), axonal growth of dorsal root ganglion (DRG) neurons is stimulated by brain-derived neurotrophic factor (BDNF)/arginase I/EIF5A/cAMP (Cai et al., 2002; Huang et al., 2007), and EIF5A variants have been found to cause several disorders, such as developmental delay, intellectual disability, facial dysmorphisms, and microcephaly (Park et al., 2022).