How this therapy could help:
The memory loss and functional decline of AD have been linked to abnormal protein deposits that build up in the brain. Among those proteins are amyloid and tau. Deposits of abnormal tau, so-called neurofibrillary tangles, form in the neurons and are linked to increasing impairment and loss of brain cells associated both with AD and with other neurodegenerative diseases, known as tauopathies, such as progressive supranuclear palsy and frontotemporal dementia. BIIB092 is an antibody targeting extracellular tau and may reduce the spreading of tau from one cell to the next, potentially slowing the progress of the disease.