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Study details
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Dose Escalation Study Evaluating the Safety and Pharmacokinetics of VX-581 in Healthy Participants

Vertex Pharmaceuticals Incorporated
NCT IDNCT07283770ClinicalTrials.gov data as of Apr 2026
Phase

Phase 1

Target enrollment

128

Study length

about 12 months

Ages

18–55

Locations

1 site in KS

What this study is about

Researchers are testing a treatment called VX-581 to see if it's safe and how it works in healthy people. The trial will last for 345 days, with participants receiving either a placebo or VX-581.

Simplified from trial records by PatientMatch.

What you may be asked to do

  • 1.Take Placebo
  • 2.Take VX-581

Participation Burden

What's physically and logistically required of participants.

Logistics & Travel
In-person visits

Requires travel to a study site

Physical Intervention
Standard

How treatment is administered

Treatment Assignment
Randomized & Blinded

You may get a placebo/standard care, and you won't know which.

Extracted study details

Pulled from the trial record to show what is being tested and what the study is measuring.

Endpoints

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

Secondary: Part A: Maximum Observed Plasma Concentration (Cmax) of VX-581, Part B: Maximum Observed Plasma Concentration (Cmax) of VX-581

Body systems

Respiratory