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Arbaclofen Placarbil

Phase 2

Alcohol Use Disorder | Small molecule | Psychiatry |Indivior Pharmaceuticals, Inc.|Trials Updated: Jan 23, 2017

Arbaclofen Placarbil development status

Highest phase Phase 2
Registered trials 1 across 1 sponsor since Jul 2015

Arbaclofen Placarbil target and mechanism

Molecular targetGABBR1, GABBR2
Target classAgonist
ModalitySmall molecule

Also known as Arbaclofen Placarbil SR

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLEDDMC
Total Trials1
Total Enrollment18

FDA Designations

No designations recorded

Arbaclofen Placarbil clinical trials

Arbaclofen Placarbil · 1 trial · 1 indication

Phase 2 1
NCT02511886A Dose-Escalation Study to Determine the Maximum Tolerated Dose of Arbaclofen Placarbil in Subjects With Alcohol Use DisorderAlcohol Use Disorder
COMPLETED18 Analytics
PHASE2COMPLETED
A Dose-Escalation Study to Determine the Maximum Tolerated Dose of Arbaclofen Placarbil in Subjects With Alcohol Use Disorder
Alcohol Use DisorderUnlock trial analytics

Study Endpoints

Primary Endpoints

Maximum Tolerated Dose (MTD) of Arbaclofen Placarbil
Up to 30 day residential (inpatient) treatment period

A data monitoring committee (DMC) will review and make a recommendation to stop dosing escalation based on the review of the unblinded AE and safety assessments or when at least one subject on active investigational product experiences an SAE related to the investigational product. The MTD and the dosage that will not be exceeded in the further development of this compound will be based upon a comprehensive review of the safety data.

Maximum Observed Plasma Concentration of Arbaclofen Placarbil (AP) (Cmax)
Prior to the initial dose of AP on day 1 and 0.5, 1, 2, 3, 4, 5, 6, 7, 8,10, 12, 16, 20, and 24 hours post-dose (predose day 2); and prior to dose of AP on days 6, 12, 18, and 24 and 0.5, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, and 12 hours post dose

Blood samples will be obtained and plasma concentrations determined using a validated liquid chromatography with tandem mass spectrometry methods

Time to Maximum Observed Plasma Concentration of Arbaclofen Placarbil (AP) (Tmax)
Prior to the initial dose of AP on day 1 and 0.5, 1, 2, 3, 4, 5, 6, 7, 8,10, 12, 16, 20, and 24 hours post-dose (predose day 2); and prior to dose of AP on days 6, 12, 18, and 24 and 0.5, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, and 12 hours post dose

Blood samples will be obtained and plasma concentrations determined using a validated liquid chromatography with tandem mass spectrometry methods

Area Under the Concentration -Time Curve from time 0 to the time of the last quantifiable plasma concentration (AUClast)
Prior to the initial dose of AP on day 1 and 0.5, 1, 2, 3, 4, 5, 6, 7, 8,10, 12, 16, 20 hours post dose

Blood samples will be obtained and plasma concentrations determined using a validated liquid chromatography with tandem mass spectrometry methods

Area Under the Concentration -Time Curve from time 0 extrapolated to infinite time (AUCinf)
Prior to the initial dose of AP on day 1 and 0.5, 1, 2, 3, 4, 5, 6, 7, 8,10, 12, 16, 20 hours post dose

Blood samples will be obtained and plasma concentrations determined using a validated liquid chromatography with tandem mass spectrometry methods

Area Under the Concentration -Time Curve from time 0 to 12 hours post dose(AUC0-12)
Prior to the initial dose of AP on day 1 and 0.5, 1, 2, 3, 4, 5, 6, 7, 8,10, 12, 16, 20 hours post dose

Blood samples will be obtained and plasma concentrations determined using a validated liquid chromatography with tandem mass spectrometry methods

Apparent Terminal Plasma Half-Life (t 1/2)
Prior to the initial dose of AP on day 1 and 0.5, 1, 2, 3, 4, 5, 6, 7, 8,10, 12, 16, 20 hours post

Blood samples will be obtained and plasma concentrations determined using a validated liquid chromatography with tandem mass spectrometry methods

Apparent Terminal Phase Rate Constant
Prior to the initial dose of AP on day 1 and 0.5, 1, 2, 3, 4, 5, 6, 7, 8,10, 12, 16, 20 hours post dose

Apparent terminal rate constant (1/h), determined by linear regression of the terminal points of the log-linear concentration-time curve. Visual assessment will be used to identify the terminal linear phase of the concentration-time profile. A minimum of 3 data points will be used for determination.

Percentage of AUCinf obtained by extrapolation (%AUCex)
Prior to the initial dose of AP on day 1 and 0.5, 1, 2, 3, 4, 5, 6, 7, 8,10, 12, 16, 20 hours post dose

If the extrapolated area is greater than 20% of AUCinf, then AUCinf will be listed but not included in summary presentations or statistical analyses

Apparent Oral Clearance (CL/F)
Prior to the initial dose of AP on day 1, 6, 12, 18, 24 and 0.5, 1, 2, 3, 4, 5, 6, 7, 8,10, 12, 16, 20 hours post dose

Calculated as Dose/AUCinf

Apparent Volume of Distribution (Vz/F)
Prior to the initial dose of AP on day 1 and 0.5, 1, 2, 3, 4, 5, 6, 7, 8,10, 12, 16, 20 hours post dose

Calculated as Dose/apparent terminal phase rate constant \* AUCinf

Area Under the Plasma Concentration-Time Curve From Time Zero To The End of Dosing Interval (AUCtau)
Prior to dose of AP on days 6, 12, 18, and 24 and 0.5, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, and 12 hours post dose

Area Under the Plasma Concentration-Time Curve From Time 0 to the End of the Dosing Interval

Minimum Observed Plasma Concentration (Cmin)
Prior to dose of AP on days 6, 12, 18, and 24 and 0.5, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, and 12 hours post dose

Blood samples will be obtained and plasma concentrations determined using a validated liquid chromatography with tandem mass spectrometry methods

Pre-Dose Plasma Concentration (Ctrough)
Prior to dose of AP on days 6, 12, 18, 19, 20, 21, 22, 23, and 24 hours post dose

Blood samples will be obtained and plasma concentrations determined using a validated liquid chromatography with tandem mass spectrometry methods

Secondary Endpoints

The Number of Participants Who Experienced Serious or Non-Serious Adverse Events
Up to 11 weeks
Columbia Suicide Severity Rating Scale (C-SSRS)
Up to 11 weeks
The Obsessive-Compulsive Drinking Scale (OCDS)
Up to 11 weeks
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Study Design & Arms

AllocationRANDOMIZED
MaskingDOUBLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Arbaclofen Placarbil (AP)EXPERIMENTALOrally administered Arbaclofen Placarbil (AP) sustained release (SR) tablets
PlaceboPLACEBO_COMPARATORSubjects remain on placebo for entire study

Interventions

NameTypeDescription
Arbaclofen PlacarbilDRUGArbaclofen Placarbil
PlaceboDRUGPlacebo matched tablets
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Eligibility Criteria

Age Range18 Years to 65 Years
SexALL
Healthy VolunteersNo
Study Sites1

Inclusion Criteria: 1. 18 to 65 years of age. 2. Diagnosis of AUD confirmed by the Mini-International Neuropsychiatric Interview. 3. For those requiring medical detoxification from alcohol, subjects will be required to have completed a program for detoxification from alcohol within 4 days prior to ...

Countries:United States
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Frequently asked questions about Arbaclofen Placarbil

What is Arbaclofen Placarbil used for?

Arbaclofen Placarbil is being developed for the treatment of Alcohol Use Disorder. It is an investigational small molecule that has been studied in a Phase 2 clinical trial. The drug is not approved for any indication and remains in clinical development.

What does Arbaclofen Placarbil target?

Arbaclofen Placarbil targets the GABBR1 and GABBR2 receptors, where it acts as an agonist. By activating these GABA-B receptors, it is thought to modulate neurotransmitter activity associated with alcohol dependence. This mechanism is being explored for its potential to reduce alcohol craving and consumption.

Who is developing Arbaclofen Placarbil?

Arbaclofen Placarbil is being developed by Indivior Pharmaceuticals, Inc., which trades under the ticker symbol INDV. Indivior is a specialty pharmaceutical company focused on treatments for addiction and related conditions.

What phase is Arbaclofen Placarbil in?

Arbaclofen Placarbil is in Phase 2 clinical development. A single Phase 2 trial has been completed, and no active trials are currently listed. The drug is investigational and has not been approved by the FDA for any indication.

What clinical trials is Arbaclofen Placarbil in?

Arbaclofen Placarbil has been evaluated in one completed Phase 2 trial, NCT02511886. This was a dose-escalation study to determine the maximum tolerated dose in subjects with Alcohol Use Disorder. The trial enrolled 18 participants in the United States and was randomized, double-blind, and placebo-controlled.

Is Arbaclofen Placarbil the same as Arbaclofen Placarbil SR?

Yes, Arbaclofen Placarbil SR is an alternative name for Arbaclofen Placarbil. Both names refer to the same investigational drug candidate being developed by Indivior Pharmaceuticals for Alcohol Use Disorder.