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VX-973

Phase 1

Pain | Small molecule | Pain |Vertex Pharmaceuticals Incorporated|Last Updated: Aug 26, 2025

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLED
Total Trials2
Total Enrollment60

FDA Designations

No designations recorded

Clinical trial landscape

VX-973 · 2 trials · 1 indication

Phase 1 2
NCT06615570A Phase 1 Dose Escalation Study of VX-973 in Healthy ParticipantsPain
COMPLETED30 Analytics
NCT05866055A Phase 1 Dose Escalation Study of VX-973 in Healthy AdultsPain
COMPLETED30 Analytics
PHASE1COMPLETED
A Phase 1 Dose Escalation Study of VX-973 in Healthy Participants
PainUnlock trial analytics
PHASE1COMPLETED
A Phase 1 Dose Escalation Study of VX-973 in Healthy Adults
PainUnlock trial analytics

Study Endpoints

Primary Endpoints

Part A: Safety and Tolerability as Assessed by Number of Participants With Adverse Events (AEs) and Serious Adverse Events (SAEs)
From Day -1 up to Day 30
Part B: Safety and Tolerability as Assessed by Number of Participants With Adverse Events (AEs) and Serious Adverse Events (SAEs)
From Day -1 up to Day 85

Secondary Endpoints

Part A: Maximum Observed Plasma Concentration (Cmax) of VX-973
From Day 1 up to Day 30
Part B: Maximum Observed Plasma Concentration (Cmax) of VX-973
From Day 1 up to Day 85
Part A: Area Under the Concentration Versus Time Curve (AUC) of VX-973
From Day 1 up to Day 30
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Study Design & Arms

AllocationRANDOMIZED
MaskingQUADRUPLE
ModelSEQUENTIAL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Part A: Single Ascending DoseEXPERIMENTALParticipants will be randomized to receive a single dose of VX-973 under fasted conditions.
Part B: Multiple Ascending DoseEXPERIMENTALParticipants will be randomized to receive multiple doses of VX-973 under fasted conditions.
Placebo Part APLACEBO_COMPARATORParticipants will be randomized to receive placebo matched to VX-973.
Placebo Part BPLACEBO_COMPARATORParticipants will be randomized to receive placebo matched to VX-973.

Interventions

NameTypeDescription
VX-973DRUGSuspension for oral administration.
PlaceboDRUGSuspension for oral administration.
MidazolamDRUGSyrup for oral administration.
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Eligibility Criteria

Age Range18 Years to 55 Years
SexALL
Healthy VolunteersYes
Study Sites1

Key Inclusion Criteria: * Body mass index (BMI) of 18.0 to 32.0 kilogram per meter square (kg/m\^2) * A total body weight of more than (\>) 50 kg * Participants of non-childbearing potential * Nonsmoker or ex-smoker for at least 3 months before screening Key Exclusion Criteria: * History of febri...

Countries:United StatesUnited Kingdom
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Frequently asked questions about VX-973

What is VX-973 used for?

VX-973 is an investigational small molecule being developed for the treatment of pain. It is currently in Phase 1 clinical development and has not been approved by regulatory authorities. The drug is being studied in healthy volunteers to evaluate its safety and tolerability.

Who makes VX-973?

VX-973 is being developed by Vertex Pharmaceuticals Incorporated, a biopharmaceutical company traded on the NASDAQ under the ticker symbol VRTX. The company is conducting Phase 1 clinical trials to evaluate the drug's safety and tolerability in healthy volunteers.

What phase is VX-973 in?

VX-973 is in Phase 1 clinical development. It is an investigational drug and has not been approved by regulatory authorities. Two Phase 1 dose escalation studies have been completed, both involving healthy adult volunteers.

What clinical trials is VX-973 in?

VX-973 has completed two Phase 1 clinical trials. The first, NCT05866055, was a dose escalation study in healthy adults in the United Kingdom. The second, NCT06615570, was a dose escalation study in healthy participants in the United States. Both trials enrolled 30 participants each.

Is VX-973 the same as any other drug?

No alternative names for VX-973 have been disclosed. The drug is identified solely by its code name VX-973 in clinical trial registrations and is being developed by Vertex Pharmaceuticals for the treatment of pain.