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Healthy Volunteers (HV)Phase 1NCT07310264

Research Into the Safety of a New Agent (VT-5006) in People With and Without Parkinson's Disease

A Phase 1 study testing VT-5006 in people with Healthy Volunteers (HV) and Parkinson's Disease (PD), run by Vertero Therapeutics at 1 site in Netherlands.

Recruiting

Looking for participants now. Contact the study team or a site below to ask about taking part.

Sites and contacts
Official record
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Trial summary

This is a first-in-human (FIH) study of orally administered VT-5006 (also known as AX-5006) in healthy adult volunteers (HVs) and adult participants with Parkinson's disease (PD). The goal of this clinical trial is to learn if VT-5006 is safe and tolerable in healthy volunteers and in participants with PD. Read more about this study

Who is it for?
Ages 18 to 80 yearsHealthy volunteers can take part
What is being tested?
VT-5006
Type of treatment
Pill or oral medicine
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
84 participants
Where
1 siteNetherlands
Study dates
30 Oct 2025to 28 Sep 2026
Phase
Phase 1
Are there results?
Not yet: the study is under way

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 to 80 years
  • All sexes
  • Healthy volunteers accepted
  • Adult, Older adult

Who may be able to join

  • Diagnosed with PD confirmed by a neurologist within a maximum of 10 years (based of year of diagnosis) prior to screening
  • Has current or history of GI motility dysfunction or persistent constipation
  • Score of < 3 on the Modified Hoehn and Yahr Scale
  • Is able to swallow multiple and large capsules without assistance or difficulty, in the opinion of the investigator
  • Participants should be on a stable regimen of any prescribed (except levodopa/carbidopa, levodopa/benserazide or anticholinergic agents) or over-the-counter medications or supplements for at least 60 days prior to enrolment in the study. Participants should not change the dosage or frequency of these medications or supplements while in the study. If changes to medications or supplements are contemplated during the study, the Investigator should be contacted prior to any change.
  • Has suitable venous access for blood sampling

Who cannot join

  • Has a known allergy or hypersensitivity to any component of the formulation of VT-5006 or matching placebo, or history of severe allergy or anaphylaxis to a drug, food, or other exposure
  • Participants taking levodopa/carbidopa or levodopa/benserazide must remain on a stable dose and regimen from at least 21 days prior to Day 1 visit to end of study (EOS) visit. Other treatments for PD symptoms may be allowed at the discretion of the medical monitor
  • Has any clinically significant arrhythmia(s) on ECG; specifically, the participant's corrected QT interval (QTcf) (Fridericia's correction) is >450 ms for males or >470 ms for females
  • Has clinically significant abnormalities, as judged by the investigator, in laboratory test results (including hepatic and renal panels, complete blood count, chemistry panel and urinalysis). In the case of uncertain or questionable results, tests performed during screening may be repeated before randomization to confirm eligibility or judged to be clinically irrelevant for healthy participants
  • Has any of the following test results: a serum total bilirubin value >1.5 x upper limit of normal (ULN); a serum alanine aminotransferase (ALT) or aspartate aminotransferase (AST) value 2x ULN. As an exception, participants that present with elevated bilirubin in the absence of elevations in ALT or AST that fits the pattern of Gilbert's syndrome may be enrolled after discussion with the medical monitor if their conjugated bilirubin is not or slightly elevated and the level is considered to be not clinically significant.
  • Any history of lumbar surgery for any reason (e.g. herniated disc) that in the opinion of the Investigator would interfere with or pose risks to a lumbar puncture procedure
  • Other contraindications to having a lumbar puncture

Trial locations and contacts

1 site in 1 country. Contact the study team or a site near you to ask about taking part.

Netherlands1 site, 1 recruiting
  • Center for Human Drug Research

    Leiden

    P.H.C. Kremer, +31 0715246400, clintrials@chdr.nl

    Recruiting

Other trials in Netherlands

About this study

Official title: A Phase I, Randomized, Single Ascending Dose, Multiple Ascending Dose, Double-Blind Study to Evaluate the Safety, Tolerability, Pharmacokinetics and Pharmacodynamics of AX-5006 (Aka VT-5006) in Healthy Participants and Participants With Parkinson's Disease.

This is a first-in-human (FIH) study of orally administered VT-5006 (also known as AX-5006) in healthy adult volunteers (HVs) and adult participants with Parkinson's disease (PD). The goal of this clinical trial is to learn if VT-5006 is safe and tolerable in healthy volunteers and in participants with PD. It has three Parts (A, B, and C).

Part A: Healthy volunteers aged 18-54 will attend a screening visit, take a single dose of VT-5006 or matching placebo after an overnight fast, stay in the clinic for three nights, and complete a follow-up visit. One group of participants in Part A will be asked to return to the clinic after approximately two weeks, take a single dose of VT-5006 or matching placebo after consuming a high-fat meal and stay in the clinic for another three nights.

Read more

Part B: Healthy volunteers aged 18-54 will attend a screening visit, take one dose of VT-5006 or matching placebo each day for seven days after fasting overnight, stay in the clinic for 10 nights, and complete a follow up visit.

Part C: Participants with PD aged 40-80 will attend a screening visit, take one dose of VT-5006 (high dose), VT-5006 (low dose), or matching placebo each day for 28 days, complete two overnight stays in the clinic, attend three clinic visits, one phone call and a follow up visit.

Read the detailed description

Part A will consist of five single ascending dose (SAD) cohorts, with 8 participants in each cohort. Participants will be randomized to receive either VT-5006 or placebo in a 6:2 ratio. One cohort of 8 participants will complete an additional clinic stay for the purpose of evaluating food effect (FE).

Part B will consist of two multiple ascending dose (MAD) cohorts, with 10 participants in each cohort. Participants will be randomized to receive either VT-5006 or placebo in an 8:2 ratio.

Part C will consist of a single cohort of approximately 24 (or up to 32) participants with PD, randomized to receive either VT-5006 (high dose), VT-5006 (low dose) or placebo over 28 days in a 9:9:6 ratio.

Being tested
VT-5006, Placebo
Medical subject headings
Parkinson Disease

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • VT-5006Drug

    Also called AX-5006

    Oral Capsules, Active

  • PlaceboDrug

    Oral Capsules, Matched Placebo

Study groups in NCT07310264
Study groupRoleWhat they receive
Part A SAD ActiveExperimentalSingle Ascending Doses of VT-5006
Receives: Drug: VT-5006
Part A SAD PlaceboPlacebo comparatorMatched Placebo
Receives: Drug: Placebo
Part B MAD ActiveExperimentalMultiple ascending doses of VT-5006
Receives: Drug: VT-5006
Part B MAD PlaceboPlacebo comparatorMatched Placebo
Receives: Drug: Placebo
Part C Active Low DoseExperimentalLow dose VT-5006
Receives: Drug: VT-5006
Part C Active High DoseExperimentalHigh dose VT-5006
Receives: Drug: VT-5006
Part C PlaceboPlacebo comparatorMatched placebo
Receives: Drug: Placebo

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Number of participants with treatment-related adverse events (AEs)

    Incidence of treatment-emergent AEs (e.g. clinically significant electrocardiogram, vital signs and physical examination abnormalities; clinically significant changes on the Columbia-Suicide Severity Rating Scale [C-SSRS]).

    Measured: Part A: Up to 8 days; Part B: Up to 15 days; Part C: Up to 35 days;

Secondary outcomes (14)
  1. Plasma pharmacokinetic (PK) parameter: Cmax

    Maximum peak plasma concentration (Cmax)

    Measured: Part A: predose, and up to 72 hours postdose; Part B: predose, and up to 37 hours postdose on Days 1 and 7; Part C: predose, and up to 10 hours postdose on Days 1 and 28

  2. Plasma PK parameter: Tmax

    Time to Maximum Observed Concentration (Tmax)

    Measured: Part A: predose, and up to 72 hours postdose; Part B: predose, and up to 37 hours postdose on Days 1 and 7; Part C: predose, and up to 10 hours postdose on Days 1 and 28

  3. Plasma PK parameter: AUClast

    Area under the plasma concentration-time curve from time zero to the time of last quantifiable concentration (AUClast)

    Measured: Part A: predose, and up to 72 hours postdose; Part B: predose, and up to 37 hours postdose on Days 1 and 7; Part C: predose, and up to 10 hours postdose on Days 1 and 28

  4. Plasma PK parameters: AUCinf

    Area under the concentration-time curve extrapolated to infinity (AUCinf)

    Measured: Part A: predose, and up to 72 hours postdose; Part B: predose, and up to 37 hours postdose on Days 1 and 7; Part C: predose, and up to 10 hours postdose on Days 1 and 28

  5. Plasma PK parameter: t1/2

    Terminal-phase elimination half-life (t1/2)

    Measured: Part A: predose, and up to 72 hours postdose; Part B: predose, and up to 37 hours postdose on Days 1 and 7; Part C: predose, and up to 10 hours postdose on Days 1 and 28

  6. Plasma PK parameter: Apparent CL/F

    Apparent clearance (CL/F)

    Measured: Part A: predose, and up to 72 hours postdose; Part B: predose, and up to 37 hours postdose on Days 1 and 7; Part C: predose, and up to 10 hours postdose on Days 1 and 28

  7. Plasma PK parameter: Apparent Vd/F

    Apparent volume of distribution (Vd/F)

    Measured: Part A: predose, and up to 72 hours postdose; Part B: predose, and up to 37 hours postdose on Days 1 and 7; Part C: predose, and up to 10 hours postdose on Days 1 and 28

  8. Food effect on plasma PK: Cmax

    Cmax following a high fat meal

    Measured: Part A: predose and up to 72 hours postdose

  9. Food effect on plasma PK: Tmax

    Tmax following a high fat meal

    Measured: Part A: predose and up to 72 hours postdose

  10. Food effect on plasma PK: AUC

    AUC following a high fat meal

    Measured: Part A: predose and up to 72 hours postdose

  11. Urine PK parameter: CLr

    Renal clearance rate (CLr)

    Measured: Part A: Up to 72 hours postdose; Part B: Up to 24 hours postdose on Days 1 and 7; Part C: Up to 8 hours postdose on Days 1 and 28

  12. Urine PK parameter: Cumulative amount excreted (urine)

    Cumulative amount excreted in urine

    Measured: Part A: Up to 72 hours postdose; Part B: Up to 24 hours postdose on Days 1 and 7; Part C: Up to 8 hours postdose on Days 1 and 28

  13. Urine PK parameter: %Cumulative amount excreted

    Percent cumulative amount excreted in urine

    Measured: Part A: Up to 72 hours postdose; Part B: Up to 24 hours postdose on Days 1 and 7; Part C: Up to 8 hours postdose on Days 1 and 28

  14. Feces PK parameter: Observed concentration

    Observed concentration in fecal samples (ng/mL)

    Measured: Part A: 0-72 hours postdose; Part B: 0-12 hours and 12-24 hours postdose on Days 1 and 7, and anytime postdose on Day 4; Part C: Anytime postdose on Days 8, 15, 22 and 28

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted30 Dec 2025
  2. Study start30 Oct 2025
  3. Primary completion28 Sep 2026 (estimated)
  4. Study completion28 Sep 2026 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 1
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
Double blind
Who is masked
Participant, Investigator
Enrolment
84 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT07310264
Sponsor's protocol ID
VT-5006-101
Other IDs
2025-523254-14-00, AXL-5006-101, 2025
Status last verified
Mar 2026
First submitted
17 Nov 2025
Last updated
20 Mar 2026
Results posted
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No

Questions about this trial

What is this clinical trial studying?

A Phase 1 study testing VT-5006 in people with Healthy Volunteers (HV) and Parkinson's Disease (PD), run by Vertero Therapeutics at 1 site in Netherlands.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 6 inclusion and 7 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: looking for participants now, as of the sponsor's last update on 20 Mar 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in Netherlands. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

This study is still under way. Results are not available in the source record yet.

How can a doctor refer a patient or contact the research team?

Contact P.H.C. Kremer (+31 0715246400, clintrials@chdr.nl), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Number of participants with treatment-related adverse events (AEs) (time frame: Part A: Up to 8 days; Part B: Up to 15 days; Part C: Up to 35 days;). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 20 Mar 2026.

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