Hi blindjohn
Welcome to Neurotalk
There is an Australian clinical trial looking at the effects of a drug called Etanercept on progressive dementia (
ANZCTR - Registration).
I don't know about its current status but you could contact Dr Wee (in the link) for information.
Etanercept has been approved by the Therapeutic Drugs Administration for treatment of some auto-immune diseases with an inflammatory component.
I don't know if there are any doctors here who are prepared to prescribe it off-label for treatment of dementia but this is something that you could investigate.
.