Thus, the MEG3 (ENST00000398461)/hsa-let-7d-5p/ATF6B, AC092687.3 (ENST0000606907)/hsa-let-7e-5p/SREBF2, AC092687.3 (ENST0000606907)/hsa-let-7e-5p/FNIP1, AC092687.3 (ENST0000606907)/hsa-let-7e-5p/PMAIP1, and SDCBP2-AS1 (ENST00000446423)/ hsa-miR-101-3p/MAPK6 axes would be key in controlling processes related to AD and PD, according to the GSE48552, GSE46131, GSE46579, and GSE155700 studies. The gene discussed is MAPK6; the disease is Parkinson disease.