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Completed

NCT Number: NCT06345755

A Phase 1 Study to Evaluate Safety, Tolerability, and Pharmacokinetics of VX-407 in Healthy Participants

The purpose of the study is to evaluate the safety, tolerability, and pharmacokinetic parameters of VX-407 in healthy participants.

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Key information

About this study

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.).

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

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 greater than (>) 50 kg
  • Nonsmoker or ex-smoker for at least 3 months before screening

Key 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.

Treatment and study plan

VX-407

Drug

Solution or Suspension for oral administration.

Placebo

Drug

Solution or Suspension for oral administration.

midazolam

Drug

Syrup for oral administration.

Primary outcomes

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

    Time frame: From Enrollment up to Day 10

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

    Time frame: From Enrollment up to Day 23

Secondary outcomes

  1. Part A: Maximum Observed Plasma Concentration (Cmax) of VX-407

    Time frame: From Day 1 up to Day 6

  2. Part B: Maximum Observed Plasma Concentration (Cmax) of VX-407

    Time frame: Days 1, 7, and 14

  3. Part A: Area Under the Concentration Versus Time Curve (AUC) of VX-407

    Time frame: From Day 1 up to Day 6

  4. Part B: Area Under the Concentration Versus Time Curve (AUC) of VX-407

    Time frame: Days 1, 7, and 14

  5. Part C: Area Under the Concentration Versus Time Curve (AUC) of MDZ in Absence and Presence of VX-407

    Time frame: On Day 1, and Day 15

  6. Part C: Maximum Observed Plasma Concentration (Cmax) of MDZ in Absence and Presence of VX-407

    Time frame: On Day 1, and Day 15

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

    Time frame: From Enrollment up to Day 24

  8. Part D: Maximum Observed Plasma Concentration (Cmax) of VX-407 Tablet Formulation (test) compared to a Suspension Formulation (reference) Under Fasted Conditions

    Time frame: Days 1, 7, and 13

  9. Part D: Area Under the Concentration Versus Time Curve From the Time of Dosing Extrapolated to Infinity (AUC0-inf) of VX-407 Under Fasted Conditions

    Time frame: Days 1, 7, and 13

  10. Part D: Maximum Observed Plasma Concentration (Cmax) of VX-407 Tablet Formulation Under Fed versus Fasted State

    Time frame: Days 1, 7, and 13

  11. Part D: Area Under the Concentration Versus Time Curve From the Time of Dosing Extrapolated to Infinity (AUC0-inf) of VX-407 Tablet Formulation Under Fed versus Fasted State

    Time frame: Days 1, 7, and 13

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

    Time frame: From Enrollment up to Day 22

Sponsors and collaborators

Lead sponsor

Vertex Pharmaceuticals Incorporated

Industry

Registry information

Official study title

A Phase 1, Randomized, Double-blind, Placebo-controlled, First-in-human Study Evaluating the Safety, Tolerability, and Pharmacokinetics of Single and Multiple Ascending Doses of VX-407 in Healthy Subjects

Important dates

Study start
2024
Primary completion
2025
Study completion
2025
First posted
Apr 3, 2024
Registry last updated
Jul 14, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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