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A Phase 1, First-in-human Study of VX-433

A Phase 1, First-in-human Study of VX-433

Recruiting
18-55 years
All
Phase 1

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Overview

The purpose of this study is to evaluate the safety, tolerability, and pharmacokinetics (PK) of VX-433 following single and multiple ascending doses, as well as to assess the effect of VX-433 on the PK of midazolam, bupropion, and hydroxybupropion.

Description

The study is being conducted in healthy participants to evaluate the safety, tolerability, and PK of VX-433 (Parts A and B), as well as potential drug-drug interaction (DDI) between VX-433 and midazolam or bupropion (Part C).

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.).

Eligibility

Key Inclusion Criteria:

  • Body mass index (BMI) of 18.0 to 30.0 kilogram per meter square (kg/m2), inclusive
  • A total body weight of more than (\>) 50 kg
  • Nonsmoker or ex-smoker for at least 3 months before screening with current nonsmoking status confirmed by urine or blood cotinine at 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
  • For female participants: of childbearing potential, pregnant, breastfeeding, or planning to become pregnant or donate ova during the study or within 90 days after last dose of study drug

Other protocol defined Inclusion/Exclusion criteria will apply.

Study details
    Narcolepsy Type 1 (NT1)

NCT07584434

Vertex Pharmaceuticals Incorporated

27 June 2026

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FAQs

Learn more about clinical trials

What is a clinical trial?

A clinical trial is a study designed to test specific interventions or treatments' effectiveness and safety, paving the way for new, innovative healthcare solutions.

Why should I take part in a clinical trial?

Participating in a clinical trial provides early access to potentially effective treatments and directly contributes to the healthcare advancements that benefit us all.

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The duration of clinical trials varies. Some trials last weeks, some years, depending on the phase and intention of the trial.

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Compensation varies per trial. Some offer payment or reimbursement for time and travel, while others may not.

How safe are clinical trials?

Clinical trials follow strict ethical guidelines and protocols to safeguard participants' health. They are closely monitored and safety reviewed regularly.
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