An Open-Label Extension Study to Evaluate the Safety and Tolerability of SPT-300 (GlyphAllo) in Participants With Major Depressive Disorder, With or Without Anxious Distress (BUOY-1 OLE Study)

Purpose

This is an open-label, monotherapy, extension study to evaluate the safety and tolerability of SPT-300 (GlyphAllo) in adults with major depressive disorder (MDD), with or without anxious distress.

Conditions

  • Major Depressive Disorder (MDD)
  • Major Depressive Disorder With Anxious Distress

Eligibility

Eligible Ages
Between 18 Years and 66 Years
Eligible Sex
All
Accepts Healthy Volunteers
No

Inclusion Criteria

  • Participant who completed treatment in Study SPT-300-2024-203 (i.e., participant who competed Visit 8 [Day 42] of Study SPT-300-2024-203 [BUOY-1 Study]). - Women of childbearing potential (WOCP) must not plan to become pregnant during the course of the study or be currently breastfeeding. WOCP must agree to use a highly effective form of contraception during participation in the study and for 30 days after receiving the last dose of study treatment. - Participant is willing and able to refrain from the use of drugs of abuse.

Exclusion Criteria

  • Participants who, in the opinion of the Investigator, medical monitor, or Sponsor, should not participate in the study. - Participants who, in the judgment of the Investigator, were noncompliant with trial procedures or with study treatment administration during the double-blind study (BUOY-1 Study). - Female participants with a positive urine pregnancy test result. Female participants may be enrolled without a negative urine test if they are surgically sterile or at least 2 years post-menopause.

Study Design

Phase
Phase 2
Study Type
Interventional
Allocation
N/A
Intervention Model
Single Group Assignment
Primary Purpose
Treatment
Masking
None (Open Label)

Arm Groups

ArmDescriptionAssigned Intervention
Experimental
SPT-300
Participants will receive SPT-300 capsules once daily for 42 days
  • Drug: SPT-300
    A prodrug of allopregnanolone, a small molecule drug
    Other names:
    • LYT-300
    • GlyphAllo
    • Glyph Allopregnanolone

Recruiting Locations

More Details

Status
Recruiting
Sponsor
Seaport Therapeutics

Study Contact

Clinical trial information desk
617-807-4062
clinicaltrials@seaporttx.com