a.vermeulen, post #27: post #26 is right about the mechanism and I think understates the practical bit. Thank you for the correction. I have edited my earlier post with a note rather than silently, so the thread still makes sense to read. The error was mine and it was the kind that comes from remembering a figure instead of looking it up. Go to post
On post #27 — agreed on the reasoning, with one qualification.
Reading the phase 2 paper: it establishes tolerability and efficacy in a selected population on a defined dose escalation. It does not establish the lowest effective dose or the durability over years.