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VLY-686

Phase 3FDA approved 2025

Gastroparesis | Small molecule | Gastrointestinal |Vanda Pharmaceuticals Inc.|Trials Updated: Oct 19, 2026

VLY-686 development status

FDA approval Dec 30, 2025 as Nereus
Approval holderVanda Pharms Inc
ApplicationNDA220152
Highest phase Phase 3 (NCT06138613)
Phase scored for VNDAPhase 2
Registered trials 17 across 1 sponsor since Aug 2013

Label indication NEREUS is indicated for the prevention of vomiting induced by motion in adults. NEREUS is a substance P/neurokinin 1 (NK1) receptor antagonist indicated for the prevention of vomiting induced by motion in adults. ( 1 ) FDA label

VLY-686 target and mechanism

Molecular targetNK-1 receptor
Target classReceptor
ModalitySmall molecule

Also known as VLY-686 (Tradipitant), Tradipitant, Nereus

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLED
Total Trials14
Total Enrollment3,989

FDA Designations

No designations recorded

VLY-686 clinical trials

VLY-686 · 14 trials · 10 indications

Phase 3 8Phase 2 5Phase 1 1
NCT07446439A Study to Evaluate Tradipitant on Treating Nausea and Vomiting Induced by GLP-1R Agonist UseNausea and Vomiting
RECRUITING280 Analytics
NCT06836557Open Label Safety Study of Tradipitant in Idiopathic and Diabetic GastroparesisIdiopathic Gastroparesis
COMPLETED17 Analytics
NCT05903924Motion Serifos: A Study to Investigate the Efficacy of Tradipitant in Participants Affected by Motion SicknessMotion Sickness
COMPLETED316 Analytics
NCT06138613Motion Delos: An Open Label Safety and Efficacy of Tradipitant in Participants Affected by Motion SicknessMotion Sickness
ACTIVE NOT_RECRUITING705 Analytics
NCT04327661Motion Syros: A Study to Investigate the Efficacy of Tradipitant in Subjects Affected by Motion SicknessMotion Sickness
COMPLETED366 Analytics
NCT04326426ODYSSEY: A Study to Investigate the Efficacy of Tradipitant in Treating Severe or Critical COVID-19 InfectionCoronavirus Infection
ENROLLING BY_INVITATION300 Analytics
NCT04028492Evaluating the Safety and Efficacy of Tradipitant vs. Placebo in Idiopathic and Diabetic GastroparesisIdiopathic Gastroparesis
COMPLETED979 Analytics
NCT03568331Evaluating the Effects of Tradipitant vs. Placebo in Atopic Dermatitis (EPIONE)Atopic Dermatitis
COMPLETED375 Analytics
PHASE3RECRUITING
A Study to Evaluate Tradipitant on Treating Nausea and Vomiting Induced by GLP-1R Agonist Use
Nausea and VomitingUnlock trial analytics
PHASE3COMPLETED
Open Label Safety Study of Tradipitant in Idiopathic and Diabetic Gastroparesis
Idiopathic GastroparesisUnlock trial analytics
PHASE3COMPLETED
Motion Serifos: A Study to Investigate the Efficacy of Tradipitant in Participants Affected by Motion Sickness
Motion SicknessUnlock trial analytics
PHASE3ACTIVE NOT_RECRUITING
Motion Delos: An Open Label Safety and Efficacy of Tradipitant in Participants Affected by Motion Sickness
Motion SicknessUnlock trial analytics
PHASE3COMPLETED
Motion Syros: A Study to Investigate the Efficacy of Tradipitant in Subjects Affected by Motion Sickness
Motion SicknessUnlock trial analytics
PHASE3ENROLLING BY_INVITATION
ODYSSEY: A Study to Investigate the Efficacy of Tradipitant in Treating Severe or Critical COVID-19 Infection
Coronavirus InfectionUnlock trial analytics
PHASE3COMPLETED
Evaluating the Safety and Efficacy of Tradipitant vs. Placebo in Idiopathic and Diabetic Gastroparesis
Idiopathic GastroparesisUnlock trial analytics
PHASE3COMPLETED
Evaluating the Effects of Tradipitant vs. Placebo in Atopic Dermatitis (EPIONE)
Atopic DermatitisUnlock trial analytics

Study Endpoints

Primary Endpoints

Proportion of participants with at least 1 vomiting episode per week in the tradipitant group compared to the placebo group as measured by a daily symptom diary.
1 week

A questionnaire called the Nausea Vomiting Daily Diary (NV-DD) will be completed once a day, which will be used to collect data for this endpoint. The NV-DD asks participants to record their vomiting frequency in a 24-hour period.

Number of participants with adverse events (AEs), including suicidal ideation or behavior as measured by the C-SSRS
12 weeks

AEs will be coded using the MedDRA coding dictionary. An AE is defined as any untoward medical occurrence in a clinical investigation subject that does not necessarily have causal relationship with treatment. AEs will further be categorized by severity, relationship to study medication, and action taken. All AEs will be presented in data listings for subjects. The Columbia-Suicide Severity Rating Scale (C-SSRS) is a semi-structured clinical interview designed to systematically assess and track suicidal adverse events (behavior and ideation) throughout different settings including clinical trials. Results from the C-SSRS will be listed for each subject. These data will also be summarized for all subjects for suicidal ideation events, suicidal behaviors, and completed suicides.

Number of participants with changes in vital signs identified as Clinically Notable Abnormal values
12 weeks

Vital sign measurements include oral temperature (C), respiratory rate, semi-supine blood pressure (systolic and diastolic) (mmHg) and semi-supine heart rate (bpm). Criteria for identifying vital signs as Potentially Clinically Notable Abnormalities are based on the Guidelines for the Division of Neuropharmacological Drug Products. Data from vital signs will be listed, clinically notable values will be flagged, and other information collected will be listed. Data will also be summarized using mean change from first study visit and proportion of subjects with values outside the normal range, and values that were clinically notable.

Number of participants with abnormal and potentially Clinically Notable Abnormal Electrocardiogram Intervals and Heart Rate
12 weeks

Variables include PR (ms), QRS (ms), QTc (ms), and Heart Rate (bpm). Note: ms = millisecond; bpm = beats per minute

Number of participants with Clinically Notable Abnormal laboratory values
12 weeks

Laboratory data will be summarized by presenting the proportions of patients with clinically notable abnormalities as follows: shift tables, first study visit to most extreme post-treatment value, using normal ranges; summary statistics of raw data and change from first study visit values (means, medians, standard deviations, ranges). Criteria for identifying laboratory values as Potentially Clinically Notable Abnormalities are based on the FDA's Guidelines for the Division of Neuropharmacological Drug Products.

Prevention of Vomiting Measured by Vomiting Assessment (VA)
1 day

Prevention of vomiting measured by Vomiting Assessment (VA) score. The VA is a 1-item questionnaire to objectively measure the incidence of emesis. Participants will indicate whether or not they have vomited.

Safety and tolerability of tradipitant as measured by reporting of adverse events (AEs).
through study completion, approximately 1 year

Safety will be monitored using clinical measures, vital signs, blood chemistry, hematology, urology, and ECGs.

Time to improvement on a 7-point ordinal scale as compared to baseline
14 days or discharge
Change From Baseline to Week 12 in the Biweekly Average of Daily Nausea Severity Score Using MMRM Model ITT Population
12 weeks

The Gastroparesis Core Symptom Daily Diary (GCSDD) is a patient reported diary that asks patients to rate the worst occurrence of each cardinal symptom of gastroparesis (nausea severity, early satiety, postprandial fullness, bloating, and abdominal pain) in the past 24 hours on a Likert scale from 0 (no symptoms) to 5 (very severe). Change from baseline in average nausea severity score is calculated as the biweekly average post value minus baseline value of the daily nausea severity score from the GCSDD. A negative change indicates improvement.

Reduction of Worst Itch in Atopic Dermatitis
8 weeks

Reduction of worst itch in atopic dermatitis as measured by Numerical Rating Scale (NRS). Worst Itch NRS is an assessment tool that is used to report the maximum intensity of participant's itch during a 24-hour recall period. Participants were asked the following question: Please rate the itching severity that describes your worst level of itching in the past 24 hours \[0=No Itch, 10=Worst Itch Imaginable\].

The Most Severe Motion Sickness Severity During Vehicle Travel
1 day

As measured by the Motion Sickness Severity Scale (MSSS) (NRS 0-6); Lower score indicates improvement

Percentage of Vomiting
1 day

Defined as subjects ever vomited (MSSS=6) or terminated early due to severity during the vehicle travel. As measured by the Motion Sickness Severity Scale (NRS 0-6).

Change From Baseline in Average Nausea Severity
4 weeks

The Gastroparesis Core Symptom Daily Diary (GCSDD) is a patient reported diary that asks patients to rate the worst occurrence of each cardinal symptom of gastroparesis (nausea severity, early satiety, postprandial fullness, bloating, and abdominal pain) in the past 24 hours on a Likert scale from 0 (no symptoms) to 5 (very severe). Change from baseline in average nausea severity score is calculated as the weekly average post value minus baseline value of the daily nausea severity score from the GCSDD. A negative change indicates improvement.

Mean Change From Baseline in Pruritus Symptoms, as Measured by the 24-hour Average Pruritus Visual Analogue Scale (VAS) Score
56 days

Responses were measured on a 100-mm Visual Analogue Scale (VAS), where the left endpoint was marked "no itch" (0 mm) and in the right endpoint was marked "worst imaginable itch" (100 mm).

Change From Baseline to Endpoint (Day 28 or Early Termination) in Visual Analogue Scale (VAS) Pruritus 24 Hour Average Intensity.
28 days

Responses were measured on a 100-mm Visual Analogue Scale (VAS), where the left end point was marked "no itch" (0 mm) and in the right end point was marked "worst imaginable itch" (100 mm).

Itch severity score on the Verbal Rating Scale
20 minutes after Substance P injection
Itch severity score on the Visual Analog Scale
20 minutes after Substance P injection

Secondary Endpoints

Proportion of participants with worst nausea severity score ≥ 3 and at least one vomiting episode over 1 week.
1 week
To evaluate the effect of tradipitant relative to placebo on the worst of 7 daily nausea severity scores over 1 week.
1 week
To evaluate the efficacy of tradipitant in reducing individual symptoms associated with gastroparesis
12 weeks
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Study Design & Arms

AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Placebo GroupPLACEBO_COMPARATORTreatment with placebo BID for approximately 2 weeks
Tradipitant GroupEXPERIMENTALTreatment with tradipitant BID for approximately 2 weeks
Open Label TradipitantEXPERIMENTALOral Capsule
Tradipitant High DoseEXPERIMENTAL -
PlaceboPLACEBO_COMPARATOR -
Tradipitant Low DoseEXPERIMENTAL -
Tradipitant Dose AEXPERIMENTAL"See Drug"
Tradipitant Dose BEXPERIMENTAL"See Drug"
TradipitantEXPERIMENTALTradipitant 85 mg PO BID
Study DrugEXPERIMENTALVLY-686 (Tradipitant) oral capsule for 4 weeks.
VLY-686EXPERIMENTAL -
VLY-686 20 mgEXPERIMENTALSingle dose, 20 mg VLY-686, administered as two 10 mg VLY-686 oral capsules
VLY-686 50 mgEXPERIMENTALSingle dose, 50 mg VLY-686, administered as one 50 mg VLY-686 oral capsule and one placebo capsule mimicking the VLY-686 50 mg capsule
VLY-686 100 mgEXPERIMENTALSingle dose, 100 mg VLY-686, administered as two 50 mg VLY-686 oral capsules

Interventions

NameTypeDescription
TradipitantDRUGOral Capsule
PlaceboDRUGOral Capsule
Open Label TradipitantDRUGBID
VLY-686 (Tradipitant)DRUGoral capsule
VLY-686DRUG -
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Eligibility Criteria

Age Range18 Years to 65 Years
SexALL
Healthy VolunteersYes
Study Sites10

Inclusion Criteria: * Body Mass Index ≥ 25 and \< 40 kg/m\^2 * No serious medical problems or chronic diseases, specifically no type I or type II diabetes Exclusion Criteria: * Another disorder that contributes to gastrointestinal symptoms * History of intolerance and/or hypersensitivity to NK-1 ...

Countries:United StatesBelgiumGermanySwitzerland
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Competitive Landscape -Gastroparesis 2 trials

Top 1 of 2 competitors

CompanyTickerTrialsLead PhaseDrugs
Vanda Pharmaceuticals Inc.VNDA1PHASE4Tradipitant
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Recent Changes (Last 90 Days)

HIGHOct 19, 2026NCT06836557Status: RECRUITING → COMPLETED

Frequently asked questions about VLY-686

What is VLY-686?

VLY-686 is an investigational small molecule developed by Vanda Pharmaceuticals Inc. (ticker VNDA). It is being studied in Phase 2 clinical development for gastroparesis and for pruritus, including treatment-resistant pruritus associated with atopic dermatitis. It has not been approved by the FDA and remains in clinical development.

What is VLY-686 used for?

VLY-686 is being studied for gastroparesis and for pruritus, including treatment-resistant pruritus associated with atopic dermatitis. These are investigational uses in clinical trials, not approved indications. The completed Phase 2 gastroparesis study enrolled 152 participants, and a completed Phase 2 pruritus study in atopic dermatitis enrolled 69 participants.

What does VLY-686 target?

VLY-686 targets the NK-1 receptor, a receptor target. By binding this receptor, the small molecule is designed to interfere with substance P signaling, which is relevant to both gastrointestinal motility and itch pathways. This mechanism underlies its study in gastroparesis and in pruritus associated with atopic dermatitis.

Who makes VLY-686?

VLY-686 is developed by Vanda Pharmaceuticals Inc., which trades under the ticker VNDA. The company is the sponsor of the clinical trials evaluating the drug in gastroparesis and in pruritus, including treatment-resistant pruritus associated with atopic dermatitis.

What phase is VLY-686 in?

VLY-686 is in Phase 2 clinical development. It is investigational and has not been approved by the FDA. Completed studies include a Phase 2 trial in gastroparesis and a Phase 2 proof-of-concept trial in treatment-resistant pruritus associated with atopic dermatitis, plus an earlier Phase 1 itch study in healthy volunteers.

What clinical trials is VLY-686 in?

VLY-686 has been evaluated in completed trials including NCT02970968, a Phase 2 study of gastroparesis symptoms with 152 participants in the United States, and NCT02004041, a Phase 2 proof-of-concept study in treatment-resistant pruritus associated with atopic dermatitis with 69 participants in Germany. NCT01919944 was a Phase 1 itch study in healthy volunteers in Switzerland.

Is VLY-686 the same as tradipitant?

Yes. VLY-686 is also known as tradipitant, so searches for either name refer to the same investigational drug. It is a small molecule NK-1 receptor antagonist developed by Vanda Pharmaceuticals Inc. (ticker VNDA) and studied in Phase 2 trials for gastroparesis and pruritus.