No. Not as of this time.
No. Etanercept is not a proven treatment for alzheimer's disease. The studies that reported using perispinal Etanercept in ad were not properly performed and did not provide reliable results. However, there have been studies showing changes in tumor necrosis factor, which is targeted by etanercept, in ad so correctly performed future studies may be helpful.
No. No, there is no cure for alzheimer's dementia. To lessen the chance of developing alzheimer's dementia, engage in regular physical activity, social activity, and mental activity (crosswords, reading, math, sudoku, etc.), and eat plenty of fruits and vegetables.