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Suzetrigine

Phase 3

Acute Pain | Small molecule | Pain |Vertex Pharmaceuticals Incorporated|Last Updated: Sep 3, 2026

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLED
Total Trials1
Total Enrollment1,118

FDA Designations

No designations recorded

Clinical trial landscape

Suzetrigine · 10 trials · 4 indications

Phase 3 5Phase 2 1Phase 1 4
NCT07231419Evaluation of Efficacy and Safety of Suzetrigine (SUZ) for Pain Associated With Diabetic Peripheral NeuropathyDiabetic Peripheral Neuropathic Pain
RECRUITING734 Analytics
NCT06696443Evaluation of the Long-term Safety and Effectiveness of Suzetrigine (SUZ) in Participants With Painful Diabetic Peripheral Neuropathy (DPN)Diabetic Peripheral Neuropathic Pain
ACTIVE NOT_RECRUITING455 Analytics
NCT06628908Evaluation of Efficacy and Safety of Suzetrigine for Pain Associated With Diabetic Peripheral NeuropathyDiabetic Peripheral Neuropathic Pain
RECRUITING1,100 Analytics
NCT05661734A Single-arm Study to Evaluate Safety and Effectiveness of VX-548 for Acute PainPain
COMPLETED258 Analytics
NCT05558410Evaluation of Efficacy and Safety of Suzetrigine for Acute Pain After an AbdominoplastyAcute Pain
COMPLETED1,118 Analytics
PHASE3RECRUITING
Evaluation of Efficacy and Safety of Suzetrigine (SUZ) for Pain Associated With Diabetic Peripheral Neuropathy
Diabetic Peripheral Neuropathic PainUnlock trial analytics
PHASE3ACTIVE NOT_RECRUITING
Evaluation of the Long-term Safety and Effectiveness of Suzetrigine (SUZ) in Participants With Painful Diabetic Peripheral Neuropathy (DPN)
Diabetic Peripheral Neuropathic PainUnlock trial analytics
PHASE3RECRUITING
Evaluation of Efficacy and Safety of Suzetrigine for Pain Associated With Diabetic Peripheral Neuropathy
Diabetic Peripheral Neuropathic PainUnlock trial analytics
PHASE3COMPLETED
A Single-arm Study to Evaluate Safety and Effectiveness of VX-548 for Acute Pain
PainUnlock trial analytics
PHASE3COMPLETED
Evaluation of Efficacy and Safety of Suzetrigine for Acute Pain After an Abdominoplasty
Acute PainUnlock trial analytics

Study Endpoints

Primary Endpoints

Change From Baseline in the Weekly Average of Daily Pain Intensity on the Numeric Pain Rating Scale (NPRS) at Week 12 Compared to Placebo
From Baseline up to Week 12
Safety and Tolerability as Assessed by Number of Participants With Adverse Events (AEs) and Serious Adverse Events (SAEs)
From Baseline up to Week 54
Safety and Tolerability as Assessed by Number of Participants With Treatment-Emergent Adverse Events (TEAEs) and Serious Adverse Events (SAEs)
Day 1 up to Day 30
Time-weighted Sum of the Pain Intensity Difference (SPID) as Recorded on a Numeric Pain Rating Scale (NPRS) From 0 to 48 Hours (SPID48) SUZ Compared to Placebo
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 baseline pain intensity score from the pain intensity score at each postdose time point (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).

Change From Baseline in the Weekly Average of Daily Pain Intensity on a Numeric Pain Rating Scale (NPRS)
Baseline, At Week 12

Change from baseline in the weekly mean of the daily Numeric Pain Rating Scale (NPRS) score assessing average pain intensity in the last 24 hours. Pain intensity was recorded on 11-point NPRS, score range: 0 to 10, where 0= no pain and 10= worst imaginable pain.

Maximum Observed Plasma Concentration (Cmax) of SUZ and its Metabolite in the Absence and Presence of Efavirenz
Day 15 and Day 30
Area Under the Concentration Versus Time Curve During a Dosing Interval (AUCτ) of SUZ and its Metabolite in the Absence and Presence of Efavirenz
Day 15 and Day 30
Total Amount of SUZ in Breast Milk of Lactating Female Participants
From Day 1 up to Day 10
Total Amount of SUZ Metabolite in Breast Milk of Lactating Female Participants
From Day 1 up to Day 10
Part A: Maximum Observed Plasma Concentration (Cmax) of DRSP and EE in the Absence and Presence of SUZ
Pre-dose up to Day 25 Post-dose
Part A: Area Under the Concentration Versus Time Curve From the Time of Dosing Extrapolated to Infinity (AUC0-inf) of DRSP and EE in the Absence and Presence of SUZ
Pre-dose up to Day 25 Post-dose
Part A: Area Under the Concentration Versus Time Curve From the Time of Dosing to the Last Measurable Concentration (AUC0-tlast) of DRSP and EE in the Absence and Presence of SUZ
Pre-dose up to Day 25 Post-dose
Part B: Maximum Observed Plasma Concentration (Cmax) of NGM Metabolites and EE in the Absence and Presence of SUZ
Pre-dose up to Day 29 Post-dose
Part B: Area Under the Concentration Versus Time Curve From the Time of Dosing Extrapolated to Infinity (AUC0-inf) of NGM Metabolites and EE in the Absence and Presence of SUZ
Pre-dose up to Day 29 Post-dose
Part B: Area Under the Concentration Versus Time Curve From the Time of Dosing to the Last Measurable Concentration (AUC0-tlast) of NGM Metabolites and EE in the Absence and Presence of SUZ
Pre-dose up to Day 29 Post-dose
Part A: Maximum Observed Plasma Concentration (Cmax) of SUZ
Pre-dose up to Day 43
Part A: Area Under the Concentration Versus Time Curve From the Time of Dosing to the Last Measurable Concentration (AUC0-tlast) of SUZ
Pre-dose up to Day 43
Part A: Area Under the Concentration Versus Time Curve From the Time of Dosing Extrapolated to Infinity (AUC0-inf) of SUZ
Pre-dose up to Day 43
Part B: Cmax of SUZ
Pre-dose up to Day 29
Part B: AUC0-tlast of SUZ
Pre-dose up to Day 29
Part B: AUC0-inf of SUZ
Pre-dose up to Day 29

Secondary Endpoints

Change From Baseline in the Medical Outcomes Study 36-item Short-form Health Status (SF-36v2) Physical Component Summary (PCS) Score at Week 12 Compared to Placebo (Pooled with data from Study VX24-548-110)
From Baseline up to Week 12
Change From Baseline in Study 36-item Short-form Health Status (SF-36v2) Physical Component Summary (PCS) Score
From Baseline up to Week 52
Change From Baseline in the Short form McGill Pain Questionnaire-2 (SF-MPQ-2) Total Score
From Baseline up to Week 52
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Study Design & Arms

AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Suzetrigine (SUZ)EXPERIMENTALParticipants will be randomized to receive SUZ.
PlaceboPLACEBO_COMPARATORParticipants will be randomized to receive placebo matched to SUZ.
PregabalinACTIVE_COMPARATORParticipants will be randomized to receive Pregabalin.
Hydrocodone bitartrate/acetaminophen (HB/APAP)ACTIVE_COMPARATORParticipants received HB 5 milligrams (mg)/ APAP 325 mg every 6 hours (q6h) for 48 hours.
Suzetrigine (SUZ): Low DoseEXPERIMENTALParticipants received SUZ 23 mg tablet once daily (qd) for 12 weeks.
Suzetrigine (SUZ): Mid DoseEXPERIMENTALParticipants received SUZ 46 mg tablet qd for 12 weeks.
Suzetrigine (SUZ): High DoseEXPERIMENTALParticipants received SUZ 69 mg tablet qd for 12 weeks.
SUZ and EfavirenzEXPERIMENTALParticipants will receive a single dose of SUZ on Days 1 through 15. Participants will also receive a single dose of SUZ in the morning followed by a single dose of efavirenz in the evening on Days 16 through 30.
SUZEXPERIMENTALParticipants will receive a single dose of SUZ on Day 1.
Part A: SUZ with Drospirenone/Ethinyl Estradiol (DRSP/EE)EXPERIMENTALParticipants will receive a single dose of DRSP/EE on Days 1 and 20. Participants will also receive SUZ every 12 hours (q12h) from Days 7 through 25.
Part B: SUZ with Norgestimate/Ethinyl Estradiol (NGM/EE)EXPERIMENTALParticipants will receive a single dose NGM/EE on Days 1 and 22. Participants will also receive SUZ every 12 hours (q12h) from Days 9 through 29.
Part AEXPERIMENTALParticipants will be randomized to receive a single dose of SUZ in 1 of 6 treatment sequences with 3 dosing periods to assess the relative bioavailability of two tablet formulations and the effect of food on the PK of SUZ. There will be a 14-day washout period between each dosing period.
Part BEXPERIMENTALParticipants will be randomized to receive a single dose of SUZ formulation in 1 of 2 treatment sequences with 2 dosing periods to assess the relative bioavailability of tablet formulation compared to a suspension of SUZ. There will be a 14-day washout period between each dosing period.

Interventions

NameTypeDescription
SuzetrigineDRUGTablets for oral administration
Placebo (matched to SUZ)DRUGPlacebo matched to SUZ for oral administration.
PregabalinDRUGCapsules for oral administration.
Placebo (matched to Pregabalin)DRUGPlacebo matched to Pregabalin for oral administration.
Suzetrigine (SUZ)DRUGTablets for oral administration.
HB/APAPDRUGCapsules for oral administration.
Placebo (matched to HB/APAP)DRUGPlacebo matched to HB/APAP for oral administration.
EfavirenzDRUGTablet for oral administration.
DRSP/EEDRUGCombination Tablets for Oral Administration.
NGM/EEDRUGCombination Tablets for Oral Administration.
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Eligibility Criteria

Age Range18 Years to 80 Years
SexALL
Healthy VolunteersNo
Study Sites75

Key Inclusion Criteria: * Body weight greater than or equal to (≥)45 kilogram (kg) * Body mass index (BMI) ≥18 to less than (\<) 40 kilogram per meter square (kg/m\^2) * Diagnosis of diabetes mellitus type 1 or type 2 and with glycosylated hemoglobin A1c (HbA1c) ≤9% and the presence of bilateral pa...

Countries:United States
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Competitive Landscape -Acute Kidney Injury 14 trials (matched to "Acute Pain")

Recent Changes (Last 90 Days)

LOWSep 3, 2026NCT06696443lastUpdatePostDate: changed
LOWSep 3, 2026NCT06696443lastUpdatePostDate: changed
HIGHAug 18, 2026NCT07570069Status: ACTIVE_NOT_RECRUITING → COMPLETED
HIGHAug 18, 2026NCT07570069Status: ACTIVE_NOT_RECRUITING → COMPLETED
LOWJul 20, 2026NCT07231419lastUpdatePostDate: changed
LOWJul 20, 2026NCT07231419lastUpdatePostDate: changed
MEDIUMJun 30, 2026NCT07570069Status: RECRUITING → ACTIVE_NOT_RECRUITING
MEDIUMJun 30, 2026NCT07570069Status: RECRUITING → ACTIVE_NOT_RECRUITING
MEDIUMJun 30, 2026NCT07570069Status: RECRUITING → ACTIVE_NOT_RECRUITING
LOWJun 16, 2026NCT06628908lastUpdatePostDate: changed
LOWJun 16, 2026NCT06628908lastUpdatePostDate: changed
LOWJun 16, 2026NCT06628908lastUpdatePostDate: changed
LOWJun 16, 2026NCT06628908lastUpdatePostDate: changed

Frequently asked questions about Suzetrigine

What is Suzetrigine used for?

Suzetrigine is an investigational small molecule being developed for pain, including acute pain, diabetic peripheral neuropathic pain, and diabetic peripheral neuropathy. It is currently in Phase 3 clinical development and is not yet approved by the FDA.

Who makes Suzetrigine?

Suzetrigine is being developed by Vertex Pharmaceuticals Incorporated, a biopharmaceutical company traded on the NASDAQ under the ticker symbol VRTX. The company is conducting clinical trials to evaluate the drug's efficacy and safety for pain indications.

What phase is Suzetrigine in?

Suzetrigine is in Phase 3 clinical development for pain indications. It has completed Phase 3, Phase 2, and Phase 1 trials, and remains investigational. The drug is not yet approved by the FDA and is still undergoing clinical evaluation.

What clinical trials is Suzetrigine in?

Suzetrigine has been studied in several clinical trials, including NCT05558410 for acute pain after abdominoplasty, NCT05660538 for painful diabetic peripheral neuropathy, NCT06336096 for bioavailability and food effect, and NCT06820307 for effects on oral contraceptives. These trials are completed.

Is Suzetrigine the same as VX-548?

Yes, Suzetrigine is also known as VX-548. In clinical trials, it has been referred to by both names, such as in the study NCT05660538, which evaluates VX-548 for painful diabetic peripheral neuropathy.