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A Study to Explore the Effect of SP-624 on Brain Network Analytics in Healthy Adults and Adults With Major Depression

A Phase 1, Single-Center, Double-Blind, Randomized, Placebo-Controlled Study to Explore the Effect of SP-624 on Brain Network Analytics in Cohorts of Healthy Adult Subjects and Subjects With Major Depressive Disorder

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06570369
Enrollment
26
Registered
2024-08-26
Start date
2024-08-22
Completion date
2026-05-18
Last updated
2026-05-28

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Depression, Healthy, Major Depressive Disorder

Brief summary

The main goal of this clinical trial is to learn if the active study drug (code name: SP-624) has any effect on the electrical activity of the brain in adult healthy volunteers and in adults with major depression. Another goal of the study is to learn if SP-624 improves memory and learning in adults with major depression. The study will also provide additional information on the safety of SP-624 and how well it is tolerated in adult healthy volunteers and adults with major depression. Researchers will compare SP-624 to a placebo (a look-alike substance that contains no drug) to see if SP-624 has any effect on study tests. Study participants will: Take capsules of study drug (SP-624 or a placebo) once daily for 2 weeks; visit the clinic at Screening, Day 1 (first dose of study drug), and Day 15 (last dose of study drug) for checkups and tests; and have phone call check-ups on Day 7 and about 1 week after the last dose of study drug.

Interventions

DRUGSP-624

Oral dose, once daily for 2 weeks

DRUGPlacebo

Oral dose, once daily for 2 weeks

Sponsors

Sirtsei Pharmaceuticals, Inc.
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
18 Years to 60 Years
Healthy volunteers
Yes

Inclusion criteria

Key Inclusion Criteria: * In generally good health * Body mass index (BMI) between 18.0 and 40.0 kg/m2 * Willing to comply with the requirements of the study * For participants with depression: must meet study criteria for moderate to severe major depressive disorder Key

Exclusion criteria

* Female who is pregnant or breastfeeding. * Clinically significant health condition or clinically significant abnormal results on screening health tests * For participants with depression: presence of exclusionary study criteria for co-morbid psychiatric conditions or medication history.

Design outcomes

Primary

MeasureTime frameDescription
Brain Network Analytics ProfileAt the Day 15 Visit, after approximately 2 weeks of daily dosing with the assigned study interventionBrain activity using an electroencephalography (EEG) system during rest and while evoking specific brain activity response will be recorded, and artificial intelligence (AI) based analytics will be performed on the EEG recordings to provide a brain network analytic (BNA) profile for each study participant. The BNA profile at the Day 15 Visit will be compared to the BNA profile at Day 1 pre-dose to evaluate changes in the profile after 2 weeks of daily dosing with the assigned study intervention.

Secondary

MeasureTime frameDescription
Brain Network Analytics ProfileAt the Day 1 Visit, completed on study day 1 after the first dose of the assigned study interventionBrain activity using an electroencephalography (EEG) system during rest and while evoking specific brain activity response will be recorded, and artificial intelligence (AI) based analytics will be performed on the EEG recordings to provide a brain network analytic (BNA) profile for each study participant. The BNA profile at Day 1 post-dose will be compared to the BNA profile at Day 1 pre-dose to evaluate changes in the profile after a single dose of the assigned study intervention.
Spatial Working Memory TestAt the Day 15 Visit, after approximately 2 weeks of daily dosing with the assigned study intervention (Participants with Depression Only)
Paired Associates Learning TestAt the Day 15 Visit, after approximately 2 weeks of daily dosing with the assigned study intervention (Participants with Depression Only)
Digit Symbol Substitution TestAt the Day 15 Visit, after approximately 2 weeks of daily dosing with the assigned study intervention (Participants with Depression Only)
Treatment Emergent Adverse EventsThrough study completion, an average of 22 days

Countries

United States

Contacts

STUDY_DIRECTORJoel Raskin, MD

Sirtsei Pharmaceuticals

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: May 29, 2026