In contrast, we did not find differences between cells from controls or patients affected by other forms of dementia, such as DLB, or FTD associated with a loss-of-function PGRN mutation (c-709-1G > A), as well as cells from patients suffering from other neurodegenerative disorders such as PD, ALS or PSP. The gene discussed is GRN; the disease is frontotemporal dementia.