LTF and Alzheimer disease: To assess the diagnostic utility of salivary lactoferrin in AD patients, González-Sánchez et al. examined the relationship between salivary lactoferrin and cerebral Aβ load using Amyloid-Positron-Emission Tomography (PET) neuroimaging in two different cross-sectional cohorts including 52 healthy asymptomatic subjects considered as controls, 21 MCI due to AD, 25 with AD dementia and 18 with frontotemporal dementia (FTD).