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Clinical Trials/NCT07283770
NCT07283770
Recruiting
Phase 1

A Phase 1, Randomized, Double-blind, Placebo-controlled, Dose Escalation Study Evaluating Safety and Pharmacokinetics of VX-581 in Healthy Subjects

Vertex Pharmaceuticals Incorporated1 site in 1 country128 target enrollmentDecember 9, 2025
InterventionsVX-581Placebo

Overview

Phase
Phase 1
Intervention
VX-581
Conditions
Not specified
Sponsor
Vertex Pharmaceuticals Incorporated
Enrollment
128
Locations
1
Primary Endpoint
Part A: Safety and Tolerability as Assessed by Number of Participants With Adverse Events (AEs) and Serious Adverse Events (SAEs)
Status
Recruiting
Last Updated
4 months ago

Overview

Brief Summary

The purpose of this study is to evaluate the safety, tolerability, and pharmacokinetics of single and multiple ascending doses of VX-581.

Detailed Description

The study is being conducted to evaluate the safety, tolerability, and pharmacokinetics of single and multiple ascending doses of VX-581 in healthy participants and consists of Screening Phase, Treatment Phase and Safety Follow-up Phase. Note: This clinical trial information was submitted voluntarily under the applicable law and, therefore, certain submission deadlines may not apply. (That is, clinical trial information for this applicable clinical trial was submitted under section 402(j)(4)(A) of the Public Health Service Act and 42 CFR 11.60 and is not subject to the deadlines established by sections 402(j)(2) and (3) of the Public Health Service Act or 42 CFR 11.24 and 11.44.).

Registry
clinicaltrials.gov
Start Date
December 9, 2025
End Date
November 19, 2026
Last Updated
4 months ago
Study Type
Interventional
Study Design
Parallel
Sex
All

Investigators

Responsible Party
Sponsor

Eligibility Criteria

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
  • Male and Female participants of non-childbearing potential

Exclusion Criteria

  • History of febrile illness or other acute illness that has not fully resolved within 14 days before the first dose of study drug
  • Any condition possibly affecting drug absorption
  • Other protocol defined Inclusion/Exclusion criteria may apply.

Arms & Interventions

Part B: Multiple Ascending Dose

Participants will be randomized to receive multiple doses of VX-581.

Intervention: VX-581

Placebo: Part B

Participants will be randomized to receive multiple doses of placebo matched to VX-581.

Intervention: Placebo

Part A: Single Ascending Dose

Participants will be randomized to receive a single dose of VX-581.

Intervention: VX-581

Placebo: Part A

Participants will be randomized to receive a single dose of placebo matched to VX-581.

Intervention: Placebo

Outcomes

Primary Outcomes

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

Time Frame: From Day -1 up to Day 34

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

Time Frame: From Day -1 up to Day 66

Secondary Outcomes

  • Part A: Area Under the Concentration Versus Time Curve From the Time of Dosing Up to 24 Hours (AUC0-24h) of VX-581(From Day 1 up to Day 34)
  • Part B: Maximum Observed Plasma Concentration (Cmax) of VX-581(From Day 1 up to Day 66)
  • Part B: Area Under the Concentration Versus Time Curve From the Time of Dosing Up to 24 Hours (AUC0-24h) of VX-581(From Day 1 up to Day 66)
  • Part A: Maximum Observed Plasma Concentration (Cmax) of VX-581(From Day 1 up to Day 34)

Study Sites (1)

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