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VLS-01

Phase 2

Treatment Resistant Depression | Small molecule | Psychiatry |AtaiBeckley Inc.|Trials Updated: May 11, 2026

VLS-01 target and mechanism

Molecular target5-HT2AR
Target classReceptor
ModalitySmall molecule

Also known as VLS-01-203 BU

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLED
Total Trials1
Total Enrollment142

FDA Designations

No designations recorded

VLS-01 clinical trials

VLS-01 · 1 trial · 1 indication

Phase 2 1
NCT06524830A Study to Assess the Efficacy, Safety and Tolerability of VLS-01 Buccal Film, Compared to Placebo in Patients With Treatment Resistant Depression (ELUMINA)Treatment Resistant Depression
RECRUITING142 Analytics
PHASE2RECRUITING
A Study to Assess the Efficacy, Safety and Tolerability of VLS-01 Buccal Film, Compared to Placebo in Patients With Treatment Resistant Depression (ELUMINA)
Treatment Resistant DepressionUnlock trial analytics

Study Endpoints

Primary Endpoints

Change from Baseline in Montgomery-Åsberg Depression Rating Scale (MADRS) total score
Baseline to Day 29

Secondary Endpoints

Change from Baseline in MADRS total score
Baseline to Day 43
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Study Design & Arms

AllocationRANDOMIZED
MaskingTRIPLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
VLS-01-BUEXPERIMENTAL -
VLS-01-BU PlaceboPLACEBO_COMPARATOR -

Interventions

NameTypeDescription
VLS-01-203 BUDRUGVLS-01 buccal transmucosal administration
VLS-01-BU PlaceboDRUGPlacebo buccal transmucosal administration
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Eligibility Criteria

Age Range18 Years to 65 Years
SexALL
Healthy VolunteersNo
Study Sites48

Inclusion Criteria: * Participant must be 18 to 65 years of age inclusive at the time of signing the Informed Consent. * Has a diagnosis of recurrent moderate or severe MDD without psychotic features or single- episode MDD with duration greater than or equal to 3 months without psychotic features a...

Countries:United StatesAustraliaCanadaUnited Kingdom
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Frequently asked questions about VLS-01

What is VLS-01 used for?

VLS-01 is being developed for the treatment of treatment resistant depression, a form of major depressive disorder that has not responded adequately to prior antidepressant therapies. It is an investigational small molecule in Phase 2 clinical development and has not been approved for any indication.

What does VLS-01 target?

VLS-01 targets the 5-HT2A receptor, also written 5-HT2AR, a serotonin receptor. The drug is a small molecule designed to act at this receptor target as part of its investigational profile in treatment resistant depression.

Who is developing VLS-01?

VLS-01 is being developed by AtaiBeckley Inc., which trades under the ticker ATAI. The company is the sponsor of the clinical program evaluating the drug in treatment resistant depression.

What phase is VLS-01 in?

VLS-01 is in Phase 2 clinical development. It is investigational and has not been approved by the FDA or any other regulatory agency. The ongoing Phase 2 study is currently recruiting participants.

What clinical trials is VLS-01 in?

VLS-01 is being studied in the ELUMINA trial, registered as NCT06524830. This Phase 2 study is randomized, double blind, and placebo controlled, with an enrollment of 142 patients with treatment resistant depression across the United States, Australia, Canada, and the United Kingdom.

Is VLS-01 the same as VLS-01-203 BU?

Yes, VLS-01-203 BU is another name for VLS-01. The buccal film formulation of the drug is referred to as VLS-01 Buccal Film in its clinical study, so searches for VLS-01-203 BU refer to the same investigational asset.