Research on neurodegenerative diseases has increasingly focused on the role of biomarkers in understanding disease mechanisms and progression. A study examining transcriptomic profiles of monocytes from individuals with sporadic Parkinson's disease (PD) revealed significant dysregulation of mitochondrial and proteolysosomal genes, suggesting a distinct immune response in PD compared to healthy subjects (ref: Navarro doi.org/10.1038/s43587-021-00110-x/). In the context of Alzheimer's disease (AD), a comprehensive analysis of cerebrospinal fluid (CSF) biomarkers indicated that while Aβ1-42 did not correlate with neuropathological changes, phosphorylated tau (P-tau181) and total tau (T-tau) showed significant associations, particularly strengthening over time from lumbar puncture to death (ref: Bridel doi.org/10.1093/brain/). The National Institute on Aging Late-Onset Alzheimer's Disease Family Based Study (NIA-LOAD FBS) has provided a valuable resource for genetic studies, highlighting the complexity of familial AD and the potential for genetic heterogeneity to inform future research (ref: Reyes-Dumeyer doi.org/10.1002/alz.12514/). Furthermore, the Worldwide Alzheimer's Disease Neuroimaging Initiative (WW-ADNI) has been pivotal in exploring imaging and biofluid markers, facilitating a global understanding of AD and its treatment (ref: Weber doi.org/10.1002/trc2.12226/).