BDNF and Alzheimer disease: In summary, we confirmed that the ceRNA networks, including the regulated networks, lncRNA FAM87A-hsa-miR-31-5p/hsa-miR-7-5p-E2F2, lncRNA C9orf106-hsa-miR-7-5p-IGF1R, and lncRNA UCA1-hsa-miR-107-BDNF, might be associated with the pathogenesis of and development of AD.