MAPT and neurodegenerative disease: The interaction between pathological proteins including tau, Aβ, α‐synuclein and prion, is an active area of study (Busche & Hyman, 2020), given their co‐occurrence in protein aggregates observed in post‐mortem brain samples of patients diagnosed with different neurodegenerative diseases (Spires‐Jones, Attems, & Thal, 2017).