Adam Boxer, MD, PhD, UCSF Weill Institute for Neurosciences, San Francisco, CA, introduces the 4 Repeat Tauopathy Neuroimaging Initiative (NCT01804452) and discusses its role in gaining a further understanding of movement disorders such as progressive supranuclear palsy (CBD) and progressive supranuclear palsy (PSP). The longitudinal study, based in the US, aims to follow individuals with CBD or PSP using a range of blood tests and tau PET scans. This interview was recorded during an online conference call with The Video Journal of Neurology (VJNeurology).