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VX-864

Phase 2

Alpha1-Antitrypsin Deficiency | Small molecule | Rare Disease |Vertex Pharmaceuticals Incorporated|Trials Updated: May 26, 2022

VX-864 development status

Highest phase Phase 2
Registered trials 2 across 1 sponsor since Jul 2020

VX-864 target and mechanism

Molecular targetAAT
Target classProtein
ModalitySmall molecule

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLED
Total Trials1
Total Enrollment44

FDA Designations

No designations recorded

VX-864 clinical trials

VX-864 · 1 trial · 1 indication

Phase 2 1
NCT04474197Evaluation of the Efficacy and Safety of VX-864 in Subjects With the PiZZ GenotypeAlpha1-Antitrypsin Deficiency
COMPLETED44 Analytics
PHASE2COMPLETED
Evaluation of the Efficacy and Safety of VX-864 in Subjects With the PiZZ Genotype
Alpha1-Antitrypsin DeficiencyUnlock trial analytics

Study Endpoints

Primary Endpoints

Change in Plasma Functional Alpha-1 Antitrypsin (AAT) Levels
From Baseline at Day 28
Safety and Tolerability as Assessed by Number of Participants With Adverse Events (AEs) and Serious Adverse Events (SAEs)
Day 1 up to Week 8

Secondary Endpoints

Change in Plasma Antigenic AAT Levels
From Baseline at Day 28
Observed Pre-dose Plasma Concentration (Ctrough) of VX-864
Pre-dose at Day 7, Day 14, Day 21 and Day 28
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Study Design & Arms

AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
PlaceboPLACEBO_COMPARATORParticipants received placebo matched to VX-864 in the treatment period for 28 days.
VX-864 100 mgEXPERIMENTALParticipants received VX-864 100 milligrams (mg) every 12 hours (q12h) in the treatment period for 28 days.
VX-864 300 mgEXPERIMENTALParticipants received VX-864 300 mg q12h in the treatment period for 28 days.
VX-864 500 mgEXPERIMENTALParticipants received VX-864 500 mg q12h in the treatment period for 28 days.

Interventions

NameTypeDescription
VX-864DRUGTablets for oral administration.
PlaceboDRUGPlacebo matched to VX-864 for oral administration.
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Eligibility Criteria

Age Range18 Years to 80 Years
SexALL
Healthy VolunteersNo
Study Sites30

Key Inclusion Criteria: * Subjects must have a PiZZ genotype confirmed at screening * Plasma AAT levels indicating severe deficiency at screening Key Exclusion Criteria: * History of a medical condition that could negatively impact the ability to complete the study * Solid organ, or hematological...

Countries:United StatesCanadaGermanyIrelandSwedenUnited Kingdom
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Frequently asked questions about VX-864

What is VX-864?

VX-864 is an investigational small molecule developed by Vertex Pharmaceuticals for Alpha1-Antitrypsin Deficiency, a rare genetic disease. It was studied in a Phase 2 clinical trial and is not approved for any use. It is designed as an oral therapy rather than an infused protein replacement.

What is VX-864 used for in Alpha1-Antitrypsin Deficiency?

VX-864 was being developed to treat Alpha1-Antitrypsin Deficiency, a rare inherited condition. The goal was to address the underlying protein deficiency rather than only manage symptoms. It was evaluated in adults with the PiZZ genotype, the form of the disease associated with the most severe protein deficiency.

What does VX-864 target?

VX-864 targets alpha1-antitrypsin (AAT), the protein that is deficient in Alpha1-Antitrypsin Deficiency. It is a small molecule designed to act on AAT, a protein target, rather than replacing the missing protein through infusion. This oral approach aims to correct the underlying deficiency at its source.

Who makes VX-864?

VX-864 is made by Vertex Pharmaceuticals Incorporated, which trades on the Nasdaq under the ticker VRTX. Vertex is the developer of the compound and sponsored its clinical evaluation in Alpha1-Antitrypsin Deficiency. The program is part of the company's rare disease portfolio.

What phase is VX-864 in?

VX-864 is in Phase 2 development and is investigational, meaning it is not approved by the FDA or any other regulator. One Phase 2 trial has been completed, and no trials are currently active. Vertex Pharmaceuticals has not announced a regulatory submission for this asset.

What clinical trials is VX-864 in?

VX-864 was studied in one completed Phase 2 trial, NCT04474197, titled Evaluation of the Efficacy and Safety of VX-864 in Subjects With the PiZZ Genotype. The trial enrolled 44 adults with Alpha1-Antitrypsin Deficiency across the United States, Canada, Germany, Ireland, Sweden, and the United Kingdom. It was randomized, double-blind, and placebo-controlled.