Neuroinflammation in FTLD

The goal of this observational study is to investigate the role of neuroinflammation in frontotemporal lobar degeneration (FTLD). The main aims of this study are: 1. To elucidate the role and timing of neuroinflammation in FTLD by using a combination of clinical measures, 7T MRI, and CSF biomarkers; 2. To differentiate FTLD-TDP and FTLD-tau during life using biomarkers for neuroinflammation; 3. To identify biomarkers to predict and monitor disease progression in FTLD; Secondary aim: 1\. To explore the role of brain clearance in the disease process of FTLD. Participants will undergo 7T MRI scans, blood and CSF collection, clinical, neurological, and neuropsychological evaluation.