# Human brain cellular mapping and genetic research > Live situation record from CLSTR: https://clstr.news/situations/human-brain-cellular-mapping-and-genetic-research > Updated: 2026-10-01T14:00:20.000Z. Sources: 4. Developments: 2. An international scientific consortium has developed a large-scale cellular map of a human brain region, analyzing over 6 million cell nuclei from approximately 1,500 individuals across a wide age range. Initial findings established the ability to observe gene activity and cellular changes in samples from healthy individuals and patients with conditions such as Alzheimer’s, Parkinson’s, schizophrenia, and bipolar disorder. Subsequent analysis of this high-resolution mapping revealed thousands of previously invisible gene-disease associations. Researchers identified specific biological pathways for these conditions, noting that Alzheimer’s is linked to microglia dysfunction, while schizophrenia and bipolar disorder are associated with dysregulation in inhibitory neurons. The study also highlighted pleiotropic effects, where single genes influence different diseases based on cell type. By incorporating diverse ancestral backgrounds, the research confirmed that these genetic dysregulations are conserved across different ancestries. ## Timeline ### 2026-10-01: Brain cell map reveals genetic links to neurodegenerative diseases A massive new genetic map of 6 million brain cells provides high-resolution insights into Alzheimer's, Parkinson's, and schizophrenia by analyzing gene expression across diverse ancestries. 2 sources. https://clstr.news/cluster/brain-cell-map-reveals-genetic-links-to-neurodegenerative-diseases ### 2026-09-23: Scientific breakthroughs in brain mapping and kidney disease research Scientists have created a massive new cellular map of the human brain to study neurological diseases, while a multi-national study investigates non-traditional chronic kidney disease in Central America. 2 sources. https://clstr.news/cluster/scientific-breakthroughs-in-brain-mapping-and-kidney-disease-research --- Cite as: Human brain cellular mapping and genetic research. CLSTR, https://clstr.news/situations/human-brain-cellular-mapping-and-genetic-research