Researchers discovered new genetic risk factors for non-Alzheimer's dementia, specifically Lewy body dementia (LBD) and frontotemporal dementia (FTD). The team identified large-scale DNA changes, known as structural variants, that could increase the risk of these diseases. Notably, a previously unknown variant in the gene TCPN1 was linked to a higher risk for LBD, highlighting the significance of genetic research in combating neurodegenerative diseases.