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PainPhase 1NCT05635110

Evaluation of the Effects of Omeprazole and Rifampin on the Pharmacokinetics of VX-548 in Healthy Participants

A Phase 1 study testing VX-548, Omeprazole and Rifampin in people with Pain, run by Vertex Pharmaceuticals Incorporated at 1 site in Australia.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

The purpose of this study is to evaluate the pharmacokinetics and safety of VX-548 and its metabolite in the absence and presence of omeprazole or rifampin, in healthy participants. Read more about this study

Who is it for?
Ages 18 to 55 yearsHealthy volunteers can take part
Conditions the study is for
Pain
What is being tested?
VX-548, Omeprazole and Rifampin
Type of treatment
Pill or oral medicine
Could I receive a placebo?
No, everyone receives an active treatment
How many people
31 participants
Where
1 siteAustralia
Study dates
15 Dec 2022to 8 Jun 2023
Phase
Phase 1
Are there results?
None posted in the registry

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 55 years
  • All sexes
  • Healthy volunteers accepted
  • Adult

Who may be able to join

  • Body mass index (BMI) of 18.0 to 32.0 kilogram per meter square (kg/m^2)
  • A total body weight greater than (>) 50 kg

Who cannot join

  • History of febrile illness or other acute illness that has not fully resolved within 14 days before the first dose of study drug
  • Any condition possibly affecting drug absorption
  • History of cardiovascular disease
  • Participants of child-bearing potential
  • Other protocol defined Inclusion/Exclusion criteria may apply.

Trial locations and contacts

1 site in 1 country.

Australia1 site
  • CMAX Clinical Research

    Adelaide

Other trials in Australia

About this study

Official title: A Phase 1, Open-label Drug-drug Interaction Study to Evaluate the Effects of Omeprazole and Rifampin on the Pharmacokinetics of VX-548 in Healthy Subjects

The purpose of this study is to evaluate the pharmacokinetics and safety of VX-548 and its metabolite in the absence and presence of omeprazole or rifampin, in healthy participants.

Read the detailed description

This clinical trial information was submitted voluntarily under the applicable law and, therefore, certain submission deadlines may not apply. (That is, clinical trial information for this applicable clinical trial was submitted under section 402(j)(4) (A) of the Public Health Service Act and 42 CFR 11.60 and is not subject to the deadlines established by sections 402(j)(2) and (3) of the Public Health Service Act or 42 CFR 11.24 and 11.44.).

Conditions
Pain
Being tested
VX-548, Omeprazole, Rifampin
Medical subject headings
Pain

What participants receive

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

  • VX-548Drug

    Also called Suzetrigine

    Tablets for oral administration.

  • OmeprazoleDrug

    Tablets for oral administration.

  • RifampinDrug

    Capsules for oral administration.

Study groups in NCT05635110
Study groupRoleWhat they receive
Part AExperimentalParticipants will receive a single dose of VX-548 on Day 1 and a single dose of omeprazole once daily (qd) on Days 10 through Day 12. On Day 13, participants will receive omeprazole followed by VX-548 under fasted conditions.
Receives: Drug: VX-548; Drug: Omeprazole
Part BExperimentalParticipants will receive a single dose of VX-548 on Day 1 followed by rifampin qd on Days 10 through Day 27. On Day 19, participants will be co-administered rifampin and VX-548 under fasted conditions.
Receives: Drug: VX-548; Drug: Rifampin

What is being measured

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

  1. Part A: Maximum Observed Plasma Concentration (Cmax) of VX-548 and its Metabolite in the Absence and Presence of Omeprazole

    Measured: Day 1 up to Day 22

  2. Part A: Area Under the Concentration Versus Time Curve From the Time of Dosing Extrapolated to Infinity (AUC0-inf) of VX-548 and its Metabolite in the Absence and Presence of Omeprazole

    Measured: Day 1 up to Day 22

  3. Part B: Maximum Observed Plasma Concentration (Cmax) of VX-548 and its Metabolite in the Absence and Presence of Rifampin

    Measured: Day 1 up to Day 28

  4. Part B: Area Under the Concentration Versus Time Curve From the Time of Dosing Extrapolated to Infinity (AUC0-inf) of VX-548 and its Metabolite in the Absence and Presence of Rifampin

    Measured: Day 1 up to Day 28

Secondary outcomes (2)
  1. Part A:Safety and Tolerability as Assessed by Number of Participants With Adverse Events (AEs) and Serious Adverse Events (SAEs)

    Measured: Day 1 through Safety Follow-up Visit (up to 28 days)

  2. Part B: Safety and Tolerability as Assessed by Number of Participants With Adverse Events (AEs) and Serious Adverse Events (SAEs)

    Measured: Day 1 through Safety Follow-up Visit (up to 34 days)

Timeline

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

  1. First posted2 Dec 2022
  2. Study start15 Dec 2022
  3. Primary completion8 Jun 2023
  4. Study completion8 Jun 2023

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
Basic science
Allocation
Non-randomised
Intervention model
Parallel groups
Masking
None (open label)
Enrolment
31 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT05635110
Sponsor's protocol ID
VX22-548-013
Status last verified
Mar 2024
First submitted
22 Nov 2022
Last updated
20 Mar 2024
Results posted
No
FDA-regulated drug
Yes
FDA-regulated device
No
Individual data sharing
No: Details on Vertex data sharing criteria and process for requesting access can be found at: https://www.vrtx.com/independent-research/clinical-trial-data-sharing

Questions about this trial

What is this clinical trial studying?

A Phase 1 study testing VX-548, Omeprazole and Rifampin in people with Pain, run by Vertex Pharmaceuticals Incorporated at 1 site in Australia.

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 2 inclusion and 5 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: finished, as of the sponsor's last update on 20 Mar 2024. 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 Australia. 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. 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?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

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

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Part A: Maximum Observed Plasma Concentration (Cmax) of VX-548 and its Metabolite in the Absence and Presence of Omeprazole (time frame: Day 1 up to Day 22). The study lists 4 primary outcomes in all. 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 2024.

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