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Recruiting Phase 3 NCT07766655

NCT07766655 Studying NMDA and Sigma-1 in Smoking Cessation Treatment (SUMMIT)

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Clinical Trial Summary
NCT ID NCT07766655
Status Recruiting
Phase Phase 3
Sponsor Axsome Therapeutics, Inc.
Condition Smoking Cessation
Study Type INTERVENTIONAL
Enrollment 705 participants
Start Date 2026-08-27
Primary Completion 2027-12

Eligibility & Interventions

Sex All sexes
Min Age 18 Years
Max Age 65 Years
Study Type INTERVENTIONAL
Interventions
AXS-05 (dextromethorphan-bupropion)BupropionPlacebo

Eligibility Fast-Check

Enter your details for a quick preliminary check. This does not replace medical advice.

What to Expect as a Participant

You will actively receive the study intervention — which may be a drug, biologic, device, or procedure.

Phase 3 trials are large pivotal studies comparing the treatment to current standard of care or placebo. Your participation directly contributes to the evidence needed for regulatory approval.

This trial targets 705 participants in total. It began in 2026-08-27 with a primary completion date of 2027-12.

⚠ This information is for research awareness only. Always consult your physician before joining any clinical trial. Participation is voluntary and you may withdraw at any time.

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.

Eligibility Criteria

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.

Contact & Investigator

Central Contact

Study Director

✉ AXS-05-SC-301@axsome.com

📞 212-332-5061

Frequently Asked Questions

Who can join the NCT07766655 clinical trial?

This trial is open to participants of all sexes, aged 18 Years or older, up to 65 Years, studying Smoking Cessation. Full inclusion and exclusion criteria are listed in the Eligibility Criteria section. Always confirm your eligibility with the research team before applying.

What phase is the NCT07766655 trial and what does that mean for participants?

Phase 3 trials are large-scale studies comparing the new treatment to existing standards of care or a placebo. They provide the evidence needed for regulatory approval. This trial targets 705 participants.

Is NCT07766655 currently recruiting?

Yes, NCT07766655 is actively recruiting participants. Contact the research team at AXS-05-SC-301@axsome.com for enrollment information.

Where is the NCT07766655 trial being conducted?

This trial is being conducted at Little Rock, United States, Lemon Grove, United States, Pomona, United States, DeLand, United States and 11 additional locations.

Who is sponsoring the NCT07766655 clinical trial?

NCT07766655 is sponsored by Axsome Therapeutics, Inc.. The trial plans to enroll 705 participants.

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ClinicalMetric — Independent clinical trial intelligence platform. Not affiliated with NIH, ClinicalTrials.gov, the U.S. FDA, or any pharmaceutical company, hospital, or clinical research organization. Trial data is sourced from ClinicalTrials.gov for informational purposes only and does not constitute medical advice. Do not make any treatment, enrollment, or health decisions based solely on information found here — always consult a qualified healthcare professional. Full Disclaimer  ·  Last Reviewed: September 2026  ·  Data Methodology