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> The therapy costs about £100,000 upfront and then as much as £200,000 a year to treat 50 people.

Interesting that the bloodletting is so expensive. I wonder what makes it so?

For anyone who also thought that was a weird way to say the stat, it's £2,000 upfront and £4,000 a year for one person.

It does seem awfully high. Donating blood costs way less. Maybe the treatment they're saying the cost for is the drug rather than the bloodletting?

i assume they get a transfusion as well?

Would be unnecessary. They'd only be removing the plasma component. Either via plasmapheresis or a nearly identical procedure called plasma exchange.