Evaluation of E2609 in Subjects With Mild Cognitive Impairment or Mild Dementia Due to Alzheimer's Disease (Study: E2609-A001-101 Amendment 02)

"E2609 capsules: 5 mg, 25 mg, 50 mg, and 200 mg~E2609 doses: 5 mg, 10 mg, 25 mg, 50 mg, 100 mg, 200 mg, and 400 mg~According to the randomized study design, participants who are assigned to receive E2609 will each receive a single assigned dose consisting of two capsules of E2609 or in some cases one capsule of E2609 and one of placebo"

"Placebo capsules~According to the randomized study design, participants who are assigned to receive placebo will each receive a single dose consisting of two capsules of placebo"