About that number was the estimated 'Super Responders" I came to, posted here a few times, based on the information we have e.g. from the peer reviewed P2a paper.
I believe there were (or were very close to) 25 Blarcamesine and 5 Placebo to achieve +3.5 on ADCS-ADL
Those and others that stabilise or decline significantly slower will be a great basis for designing the follow on P3 Precision Medicine trial(s).