ClinicalTrials.gg
CompletedNCT04973657Updated Feb 17, 2025

A Study to Assess the Pharmacodynamics of VK0214 in Male Subjects With AMN

A Phase 1 interventional study of VK0214 and Placebo in Adrenomyeloneuropathy Form (AMN) of X-linked Adrenoleukodystrophy (X-ALD), sponsored by Viking Therapeutics, Inc.. Completed at 9 sites in 5 countries. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2025-02-17.

Sponsored by Viking Therapeutics, Inc. · Phase 1, Interventional, and Other

From the registry’s dates

  • Primary completion was Oct 2024, 2 years 1 month ago, and no results have been posted to the registry.
Phase
Phase 1
Study type
Interventional
Enrollment
24
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

Subjects will be administered multiple doses of VK0214 in a cohort dose escalation process. A total of up to 36 subjects will be enrolled in the study, into one of three dose cohorts. For each cohort, up to 12 subjects will be randomized to receive VK0214 or placebo in a 3:1 ratio so that there will be a total of up to 9 subjects for each of the active doses and up to 3 subjects dosed with placebo in each cohort.

Read the detailed description

The first part of VK0214-102 will include the first 2 dose cohorts and placebo, which will be dosed in parallel (up to N=24). The first 2 doses used in these cohorts will be 20 mg QD and 40 mg QD for 28 days. A Dose Level Review Team (DLRT) meeting will be held at the end of the first 2 parallel doses.

The DLRT will review safety, tolerability, and preliminary efficacy data from cohort 1 and 2. If the data analyzed show that the first 2 doses are safe and well tolerated the DLRT may make a recommendation for proceeding to commence dosing in the third dose cohort.

Based upon outcomes in Cohorts 1 and 2, the sponsor may decide to include a third dose cohort. Before screening may be initiated in Cohort 3, data to support dosing in this cohort will be submitted to the FDA, together with the amended protocol and the dosing recommendation of the DLRT.

02

Conditions studied

  • Adrenomyeloneuropathy Form (AMN) of X-linked Adrenoleukodystrophy (X-ALD)

Browse trials for

Keywords

  • AMN, XALD
03

In context

Adrenoleukodystrophy

68 studies on the registry are indexed under Adrenoleukodystrophy; 19 are open to participants now.

This study's enrollment of 24 is below the median of 31 across 40 interventional studies indexed under Adrenoleukodystrophy.

Browse Adrenoleukodystrophy studies →

Lead sponsor

Viking Therapeutics, Inc. is the lead sponsor of 13 studies on the registry; 4 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Provide a personally signed and dated document indicating that the subject has been informed of all pertinent aspects of the study and is willing and able to participate.
  • Have diagnosis of X-linked adrenoleukodystrophy (X-ALD) by genetic testing and elevated VLCFAs.
  • Present clinical features of AMN, or adrenal insufficiency.
  • Subjects must be 18 years of age and older.

Exclusion criteria

Exclusion Criteria:

  • Have the cerebral form of X-ALD, based on medical records, or based on MRI performed within the last 12 months or MRI at screening
  • Have been treated with any drug targeting TRβ or with any drug being tested as therapy for X-ALD AMN form within the past 30 days before screening
  • History or presence of acute or unstable hepatic, renal, gastrointestinal, pulmonary, immunological, endocrine, diabetes, hematological or oncological that in the opinion of the investigator would pose a significant risk for the subject
  • Subject has untreated primary adrenal insufficiency based on morning plasma cortisol and ACTH at screening
  • Lorenzo's Oil. Currently taking Lorenzo's Oil or erucic acid containing product, or other lipid lowering agent known to effect VLCFA levels
Terms in these criteria, in plain language(2)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Clinically significant

Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.

05

Study design

Phase
Phase 1
Primary purpose
Other
Allocation
Randomized
Intervention model
Sequential assignment
Masking
Quadruple (Participant, Care provider, Investigator, Outcomes assessor)
Enrollment
24 participants (actual)

Study arms

  • Experimental
    VK0214 Active 20mg

    20mg QD

    Drug: VK0214

  • Experimental
    VK0214 Active 40mg

    40mg QD

    Drug: VK0214

  • Placebo comparator
    Placebo

    Placebo QD

    Other: Placebo

Interventions

  • DrugVK0214

    API in capsule

  • OtherPlacebo

    API in capsule

06

What researchers measure

Primary outcomes

  1. Incidence of treatment-emergent adverse events (TEAEs) and treatment-emergent serious AEs (TESAEs)

    Evaluate the safety and tolerability of multiple oral doses of VK0214 in subjects with AMN

    Time frame: 28 days

Secondary outcomes

  1. Evaluate the Pharmacokinetics of VK0214

    Pharmacokinetic profile of VK0214 by measuring Peak Plasma Concentration (Cmax)

    Time frame: 28 days

Other outcomes

  1. Evaluate plasma VLCFAs changes

    Evaluate the efficacy of VK0214 on lowering plasma levels of VLCFAs in subjects with AMN

    Time frame: 28 days

07

Study locations

9 sites
  • Viking Clinical Site 203
    Palo Alto, California 94303, United States
  • Viking Clinical Site 207
    Gainesville, Florida 32610, United States
  • Viking Clinical Site 201
    Baltimore, Maryland 21205, United States
  • Viking Clinical Site 205
    Seattle, Washington 98195, United States
  • Viking Clinical Site 214
    Bordeaux, 33076, France
  • Viking Clinical Site 215
    Montpellier, 34295, France
  • Viking Clinical Site 209
    Leipzig, 04103, Germany
  • Viking Clinical Site 210
    Milano, 20133, Italy
  • Viking Clinical Site 212
    London, WC1N3BG, United Kingdom
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Feb 17, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT04973657
Responsible party
Sponsor
First posted
Jul 22, 2021
Start date
Jun 22, 2021
Primary completion
Oct 9, 2024
Completion
Nov 8, 2024
Last update
Feb 17, 2025

Oversight

Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Feb 2025. You cannot join it, but the record below documents what was studied.

Follow this study

Get an email when the registry record changes — status, dates, results — or when someone posts here.

Sign in to follow

Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.

Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Start the discussion