ATF2 and postmenopausal osteoporosis: For example, Gong et al. [12] published their studies in 2019, in which they pointed out that ATF2, FBXW7, and RDX play important roles in the occurrence of postmenopausal osteoporosis through enrichment analysis, protein-protein interaction (PPI) network analysis, and the qRT-PCR test, based on DEGs of expression gene microarray in women with postmenopausal osteoporosis and normal females.