Conditions: Ketamine-Induced Brain Activity Changes Psychotic-like Symptoms
Keywords: Drug therapy
Allocation: RANDOMIZED | Intervention model: CROSSOVER
Enrollment: 27
Healthy volunteers: yes

Brief summary:
The purpose of this study is to determine whether ketamine-induced brain activity changes are modulated by TAK-063 administration using neuroimaging battery tests.

Detailed description:
The drug being tested in this study is called TAK-063. This study will look at brain activity changes and treatment of psychotic-like symptoms induced by ketamine, in people who take TAK-063.

The study will enroll approximately 27 participants. Participants will be randomly assigned to one of treatment sequences-which will remain undisclosed to the participants during the study (unless there is an urgent medical need). Participants will receive the following study medications by the end of the study:

* Ketamine intravenous infusion (IV) AND
* Placebo (dummy inactive pill) - this is a tablet that looks like the study drug but has no active ingredient AND
* Two doses of TAK-063 at one of three dose levels All participants will be asked to take 3 tablets and will receive a ketamine IV on the first day of 3 separate study periods. Participants will then be assessed for brain activity changes and other symptoms. This single-center trial will be conducted in the United States. The overall time to participate in this study is up to 7 weeks. Participants will make 6 visits to the clinic.

Arms:
arm 1: Period 1, Day 1: TAK-063 placebo-matching tablets, orally, single dose and ketamine, intravenous administration according to a bolus infusion adjusted to the participant's weight; Period 2, Day 1: TAK-063 3 milligram (mg), orally, single dose and ketamine, intravenous administration according to a bolus infusion adjusted to the participant's weight; Period 3, Day 1: TAK-063 30 mg tablets, orally, single dose and ketamine, intravenous administration according to a bolus infusion adjusted to the participant's weight.

Period 1 \& 2 are followed by 7 day washout period. arm 2: Period 1, Day 1: TAK-063 3 mg tablets, orally, single dose and ketamine, intravenous administration according to a bolus infusion adjusted to the participant's weight; Period 2, Day 1: TAK-063 30 mg tablets, orally, single dose and ketamine, intravenous administration according to a bolus infusion adjusted to the participant's weight; Period 3, Day 1: TAK-063 placebo-matching tablets, orally, single dose and ketamine, intravenous administration according to a bolus infusion adjusted to the participant's weight.

Period 1 \& 2 are followed by 7 day washout period. arm 3: Period 1, Day 1: TAK-063 30 mg tablets, orally, single dose and ketamine, intravenous administration according to a bolus infusion adjusted to the participant's weight; Period 2, Day 1: TAK-063 placebo-matching tablets, orally, single dose and ketamine, intravenous administration according to a bolus infusion adjusted to the participant's weight; Period 3, Day 1: TAK-063 3 mg tablets, orally, single dose and ketamine, intravenous administration according to a bolus infusion adjusted to the participant's weight.

Period 1 \& 2 are followed by 7 day washout period. arm 4: Period 1, Day 1: TAK-063 placebo-matching tablets, orally, single dose and ketamine, intravenous administration according to a bolus infusion adjusted to the participant's weight; Period 2, Day 1: TAK-063 3 mg tablets, orally, single dose and ketamine, intravenous administration according to a bolus infusion adjusted to the participant's weight; Period 3, Day 1: TAK-063 300 mg (participants enrolled before protocol amendment 3) or 10 mg (participants enrolled after protocol amendment 3), tablets, orally, single dose and ketamine, intravenous administration according to a bolus infusion adjusted to the participant's weight.

Period 1 \& 2 are followed by 7 day washout period. arm 5: Period 1, Day 1: TAK-063 3 mg tablets, orally, single dose and ketamine, intravenous administration according to a bolus infusion adjusted to the participant's weight; Period 2, Day 1: TAK-063 300 mg (participants enrolled before protocol amendment 3) or 10 mg (participants enrolled after protocol amendment 3), tablets, orally, single dose and ketamine, intravenous administration according to a bolus infusion adjusted to the participant's weight; Period 3, Day 1: TAK-063 placebo-matching tablets, orally, single dose and ketamine, intravenous administration according to a bolus infusion adjusted to the participant's weight.

Period 1 \& 2 are followed by 7 day washout period arm 6: Period 1, Day 1: TAK-063 300 mg (participants enrolled before protocol amendment 3) or 10 mg (participants enrolled after protocol amendment 3), tablets, orally, single dose and ketamine, intravenous administration according to a bolus infusion adjusted to the participant's weight; Period 2, Day 1: TAK-063 placebo-matching tablets, orally, single dose and ketamine, intravenous administration according to a bolus infusion adjusted to the participant's weight; Period 3, Day 1: TAK-063 3 mg tablets, orally, single dose and ketamine, intravenous administration according to a bolus infusion adjusted to the participant's weight.

Period 1 \& 2 are followed by 7 day washout period. arm 7: Period 1, Day 1: TAK-063 placebo-matching tablets, orally, single dose and ketamine, intravenous administration according to a bolus infusion adjusted to the participant's weight:

Period 2, Day 1: TAK-063 30 mg tablets, orally, single dose and ketamine, intravenous administration according to a bolus infusion adjusted to the participant's weight; Period 3, Day 1: TAK-063 300 mg (participants enrolled before protocol amendment 3) or 10 mg (participants enrolled after protocol amendment 3), tablets, orally, single dose and ketamine, intravenous administration according to a bolus infusion adjusted to the participant's weight.

Period 1 \& 2 are followed by 7 day washout period arm 8: Period 1, Day 1: TAK-063 30 mg tablets, orally, single dose and ketamine, intravenous administration according to a bolus infusion adjusted to the participant's weight; Period 2, Day 1: TAK-063 300 mg (participants enrolled before protocol amendment 3) or 10 mg (participants enrolled after protocol amendment 3), tablets, orally, single dose and ketamine, intravenous administration according to a bolus infusion adjusted to the participant's weight; Period 3, Day 1: TAK-063 placebo-matching tablets, orally, single dose and ketamine, intravenous administration according to a bolus infusion adjusted to the participant's weight.

Period 1 \& 2 are followed by 7 day washout period. arm 9: Period 1, Day 1: TAK-063 300 mg (participants enrolled before protocol amendment 3) or 10 mg (participants enrolled after protocol amendment 3), tablets, orally, single dose and ketamine, intravenous administration according to a bolus infusion adjusted to the participant's weight; Period 2, Day 1: TAK-063 placebo-matching tablets, orally, single dose and ketamine, intravenous administration according to a bolus infusion adjusted to the participant's weight; Period 3, Day 1: TAK-063 30 mg tablets, orally, single dose and ketamine, intravenous administration according to a bolus infusion adjusted to the participant's weight. Period 1 \& 2 are followed by 7 day washout period

Interventions: intervention 1: Ketamine intervention 2: TAK-063 intervention 3: TAK-063 Placebo
Intervention descriptions: intervention 1: Ketamine intravenous administration. intervention 2: TAK-063 tablets intervention 3: TAK-063 placebo-matching tablets

Protocol document: