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VX-548

Phase 2

Acute Pain | Small molecule | Pain |Vertex Pharmaceuticals Incorporated|Last Updated: Jun 25, 2025

Success Probability
Approval Probability 71%
TA Base Rate26%
Adjusted LOA41%
ML RiskLOW_RISK
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Market & Valuation
rNPV $3.2B
Market Size $9.4B
Revenue Basis $1.6B
Competitors 6
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Trial Design
RandomizedDouble-BlindPLACEBO_CONTROLLEDBiomarker
Total Trials2
Total Enrollment577
FDA Designations
No designations recorded
Clinical Trials (2)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT05034952A Study Evaluating Efficacy and Safety of VX-548 for Acute Pain After an AbdominoplastyPHASE2 COMPLETED 303Aug 30, 2021Dec 21, 2021Dec 27, 20247 United States
NCT04977336A Study Evaluating Efficacy and Safety of VX-548 for Acute Pain After a BunionectomyPHASE2 COMPLETED 274Jul 19, 2021Mar 4, 2022Jun 25, 202512 United States
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Study Endpoints
Primary Endpoints
Time-weighted Sum of the Pain Intensity Difference (SPID) as Recorded on a Numeric Pain Rating Scale (NPRS) at Rest 0 to 48 Hours (SPIDr0-48) After the First Dose of Study Drug
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). SPIDr0-48 was calculated from 0 to 48 hours and the score range was -480 (worst score) to 480 (best score).

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
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).

Secondary Endpoints
Time-weighted SPID as Recorded on an NPRS at Rest 0 to 24 Hours (SPIDr0-24) After the First Dose of Study Drug
0 to 24 Hours After First Dose of Study Drug
Percentage of Participants With at Least 30 Percent (%),Reduction in NPRS (at Rest) at 48 Hours After the First Dose of Study Drug
From Baseline At 48 Hours After First Dose of Study Drug
Percentage of Participants With at Least 50% Reduction in NPRS (at Rest) at 48 Hours After the First Dose of Study Drug
From Baseline At 48 Hours After First Dose of Study Drug
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Study Design & Arms
AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
PlaceboPLACEBO_COMPARATORParticipants received placebo matched to VX-548 and Hydrocodone bitartrate/ acetaminophen (HB/APAP) for 2 days.
HB/APAPACTIVE_COMPARATORParticipants received HB 5 mg / APAP 325 milligrams (mg) every 6 hours (q6h) for 2 days.
VX-548: Low DoseEXPERIMENTALParticipants received VX-548 60 mg as first dose, followed by VX-548 30 mg every 12 hours (q12h) for 2 days.
VX-548: High DoseEXPERIMENTALParticipants received VX-548 100 mg as first dose, followed by VX-548 50 mg q12h for 2 days.
VX-548: Mid DoseEXPERIMENTALParticipants received VX-548 60 mg as first dose, followed by VX-548 30 mg q12h for 2 days.
Interventions
NameTypeDescription
VX-548DRUGTablets for oral administration.
HB/APAPDRUGCapsules for oral administration.
Placebo (matched to VX-548)DRUGPlacebo matched to VX-548 for oral administration.
Placebo (matched to HB/APAP)DRUGPlacebo matched to HB/APAP for oral administration.
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Eligibility Criteria
Age Range18 Years — 75 Years
SexALL
Healthy VolunteersNo
Study Sites7

Key Inclusion Criteria: * Before Surgery: * Participant scheduled to undergo an abdominoplasty without collateral procedures * After Surgery: * Participant is lucid and able to follow commands * All analgesic guidelines were followed during and after the abdominoplasty * Abdominoplasty pr...

Countries:United States
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