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Studying NMDA and Sigma-1 in Smoking Cessation Treatment (SUMMIT)

A Randomized, Double-Blind, Placebo and Active-Controlled Trial to Evaluate the Efficacy and Safety of AXS-05 for Smoking Cessation in Adults

Status
Recruiting
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07766655
Acronym
SUMMIT
Enrollment
705
Registered
2026-08-14
Start date
2026-08-27
Completion date
2027-12-01
Last updated
2026-09-08

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

Conditions

Smoking Cessation

Keywords

Smoking cessation, Smoking, Cigarettes, AXS-05, Auvelity, Axsome Therapeutics, Dopamine reuptake inhibitor, Norepinephrine reuptake inhibitor, Dextromethorphan, Bupropion, NMDA Receptor Antagonist, Glutamate Modulator, Sigma-1 Receptor Agonist, Nicotinic Acetylcholine Receptor Antagonist

Brief summary

This study is a Phase 3, multicenter, randomized, double-blind, placebo- and active-controlled, parallel-group trial to evaluate the efficacy and safety of AXS-05 compared to placebo and bupropion for smoking cessation in adults.

Detailed description

Eligible subjects will be randomized in a 1:1:1 ratio to receive AXS-05, bupropion, or placebo for 12 weeks, followed by an 18-week follow-up period.

Interventions

AXS-05 tablets, taken twice daily for 12 weeks.

DRUGBupropion

Bupropion tablets, taken twice daily for 12 weeks.

DRUGPlacebo

Placebo tablets, taken twice daily for 12 weeks.

Sponsors

Axsome Therapeutics, Inc.
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Investigator)

Eligibility

Sex/Gender
ALL
Age
18 Years to 65 Years
Healthy volunteers
No

Inclusion criteria

* Male or female, aged 18 to 65 (inclusive)

Exclusion criteria

* Unable to comply with study procedures. * Medically inappropriate for study participation in the opinion of the investigator.

Design outcomes

Primary

MeasureTime frame
4-Week Continuous Smoking Abstinence RateWeeks 9 to 12

Countries

United States

Contacts

CONTACTStudy Director
AXS-05-SC-301@axsome.com212-332-5061

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Sep 9, 2026