Steady, it befuddled me as well. it would appear that there was an 18 month "Core Study." Doc found (from a PR by Eisai) that they completed enrollment in March of 2021. Add 18 months and you have September 2022 as the completion date for the Core Study, or so I surmise. I believe that the September 2025 date we see as estimated completion includes a three year extension.
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