Cross-sectional analyses in this cohort allowed us to investigate associations of plasma (and CSF) BD-tau with CSF t-tau and Aβ42/β40 ratio, the soluble neurodegeneration and Aβ pathophysiology markers included in the AT(N) framework2, as well as longitudinal cognition and MRI-derived neurodegeneration evaluations. The gene discussed is MAPT; the disease is Behcet disease.