A Study Evaluating Efficacy and Safety of VX-548 for Acute Pain After a Bunionectomy

June 9, 2025 updated by: Vertex Pharmaceuticals Incorporated

A Phase 2, Randomized, Double-blind, Placebo-controlled, Dose-ranging, Study Evaluating the Efficacy and Safety of VX-548 for Acute Pain After a Bunionectomy

The purpose of this study is to evaluate the efficacy and safety of VX-548 doses in treating acute pain after a bunionectomy.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
274

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 2

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United States
    • Alabama
      • Sheffield, Alabama, United States, 35660
        • Shoals Medical Trials Inc.
    • Arizona
      • Phoenix, Arizona, United States, 85053
        • Arizona Research Center
    • California
      • Anaheim, California, United States, 92801
        • Anaheim Clinical Trials
      • Pasadena, California, United States, 91105
        • Lotus Clinical Research
      • Tarzana, California, United States, 91356
        • New Hope Research Development
    • Georgia
      • Atlanta, Georgia, United States, 30331
        • Atlanta Center for Medical Research
    • Maryland
      • Pasadena, Maryland, United States, 21122
        • Chesapeake Research Group
    • Ohio
      • Dayton, Ohio, United States, 45417
        • Midwest Clinical Research Center
    • Texas
      • Bellaire, Texas, United States, 77401
        • First Surgical Hospital
      • Carrollton, Texas, United States, 75006
        • Legent Orthopedic Hospital
      • San Antonio, Texas, United States, 78229
        • Endeavor Clinical Trials
    • Utah
      • Salt Lake City, Utah, United States, 84107
        • JBR Clinical Research

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years to 75 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Description

Key Inclusion Criteria:

  • Before Surgery:

    • Participant scheduled to undergo a primary unilateral bunionectomy with distal first metatarsal osteotomy (i.e., Austin procedure) and internal fixation under regional anesthesia (Mayo and popliteal sciatic block)

  • After Surgery:

    • Participant is lucid and able to follow commands
    • All analgesic guidelines were followed during and after the bunionectomy

Key Exclusion Criteria:

  • Before Surgery:

    • Prior history of bunionectomy or other foot surgery on the index foot
    • History of cardiac dysrhythmias requiring anti-arrhythmia treatment(s)
    • Any prior surgery within 1 month before the first study drug

  • After Surgery:

    • Participant had a Type 3 deformity requiring a base wedge osteotomy or concomitant surgery such as hammertoe repair, or had medical complications during the bunionectomy that, in the opinion of the investigator, should preclude randomization

Other protocol defined Inclusion/Exclusion criteria may apply.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Quadruple

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: VX-548: High Dose
Participants received VX-548 100 mg as first dose, followed by VX-548 50 mg q12h for 2 days.
Drug: VX-548
Tablets for oral administration.
Other Names:
  • Suzetrigine
Placebo Comparator: Placebo
Participants received placebo matched to VX-548 and Hydrocodone bitartrate/acetaminophen (HB/APAP) for 2 days.
Drug: Placebo (matched to HB/APAP)
Placebo matched to HB/APAP for oral administration.
Drug: Placebo (matched to VX-548)
Placebo matched to VX-548 for oral administration.
Active Comparator: HB/APAP
Participants received HB 5 milligrams (mg)/ APAP 325 mg every 6 hours (q6h) for 2 days.
Drug: HB/APAP
Capsules for oral administration.
Experimental: VX-548: Low Dose
Participants received VX-548 20 mg as first dose, followed by VX-548 10 mg tablet every 12 hours (q12h) for 2 days.
Drug: VX-548
Tablets for oral administration.
Other Names:
  • Suzetrigine
Experimental: VX-548: Mid Dose
Participants received VX-548 60 mg as first dose, followed by VX-548 30 mg q12h for 2 days.
Drug: VX-548
Tablets for oral administration.
Other Names:
  • Suzetrigine

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Time-Weighted Sum of Pain Intensity Difference (SPID) as Recorded on a Numeric Pain Rating Scale (NPRS) 0 to 48 Hours (SPID48) After the First Dose of Study Drug
Time Frame: 0 to 48 hours After First Dose of Study Drug
SPID was calculated as the sum of the product of time (in hours) elapsed since previous measurements and pain intensity difference. Pain intensity difference was calculated by subtracting the pain intensity score at given post-dose time points from the baseline pain intensity scores (using pain rating score range: 0= no pain to 10= worst possible pain). SPID48 was calculated from 0 to 48 hours and the score range was -480 (worst score) to 480 (best score).
0 to 48 hours After First Dose of Study Drug

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Time-Weighted SPID as Recorded on a NPRS 0 to 24 Hours (SPID24) After the First Dose of Study Drug
Time Frame: 0 to 24 hours After First Dose of Study Drug
SPID was calculated as the sum of the product of time (in hours) elapsed since previous measurements and pain intensity difference. Pain intensity difference was calculated by subtracting the pain intensity score at given post-dose time points from the baseline pain intensity scores (using pain rating score range: 0= no pain to 10= worst possible pain). SPID24 was calculated from 0 to 24 hours and the score range was -240 (worst score) to 240 (best score).
0 to 24 hours After First Dose of Study Drug
Percentage of Participants With at Least 30 Percent (%) Reduction in NPRS at 48 Hours After the First Dose of Study Drug
Time Frame: From Baseline at 48 Hours After First Dose of Study Drug
Pain intensity was recorded on 11-point NPRS, score range: 0 to 10, where 0= no pain and 10= worst imaginable pain. The percentage of participants with at least 30% reduction from baseline in NPRS at 48 hours after the first dose of VX-548, HB/APAP or placebo was reported.
From Baseline at 48 Hours After First Dose of Study Drug
Percentage of Participants With at Least 50% Reduction in NPRS at 48 Hours After the First Dose of Study Drug
Time Frame: From Baseline at 48 Hours After First Dose of Study Drug
Pain intensity was recorded on 11-point NPRS, score range: 0 to 10, where 0= no pain and 10= worst imaginable pain. The percentage of participants with at least 50% reduction from baseline in NPRS at 48 hours after the first dose of VX-548, HB/APAP or placebo were reported.
From Baseline at 48 Hours After First Dose of Study Drug
Percentage of Participants With at Least 70% Reduction in NPRS at 48 Hours After the First Dose of Study Drug
Time Frame: From Baseline at 48 Hours After First Dose of Study Drug
Pain intensity was recorded on 11-point NPRS, score range: 0 to 10, where 0= no pain and 10= worst imaginable pain. The percentage of participants with at least 70% reduction from baseline in NPRS at 48 hours after the first dose of VX-548, HB/APAP or placebo were reported.
From Baseline at 48 Hours After First Dose of Study Drug
Maximum Observed Plasma Concentration (Cmax) of VX-548 and M6-548 (Metabolite)
Time Frame: Day 1 and Day 2
Day 1 and Day 2
Time to Reach Maximum Observed Plasma Concentration (Tmax) of VX-548 and M6-548 (Metabolite)
Time Frame: Day 1 and Day 2
Day 1 and Day 2
Area Under the Concentration Versus Time Curve From 0 to 12 Hours (AUC0-12h) of VX-548 and M6-548 (Metabolite)
Time Frame: Day 1 and Day 2
Day 1 and Day 2
Safety and Tolerability as Assessed by Number of Participants With Adverse Events (AEs) and Serious Adverse Events (SAEs)
Time Frame: Day 1 up to Day 16
Day 1 up to Day 16

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Vertex Pharmaceuticals Incorporated

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
July 19, 2021

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
February 17, 2022

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
March 4, 2022

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
July 15, 2021

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
July 15, 2021

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
July 26, 2021

Study Record Updates

Last Update Posted (Estimated)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
June 25, 2025

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
June 9, 2025

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
June 1, 2025

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • VX21-548-101

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

IPD Plan Description

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

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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