A Study of AT2101 (Afegostat Tartrate) in Adult Patients With Type 1 Gaucher Disease Currently Receiving Enzyme Replacement Therapy

August 28, 2018 updated by: Amicus Therapeutics

A Randomized, Open-label Study to Assess the Safety and Tolerability of Multiple Dose Levels and Multiple Dosing Regimens of AT2101 in Adult Patients With Type 1 Gaucher Disease Currently Receiving Enzyme Replacement Therapy

This study was conducted to test the safety and tolerability of afegostat tartrate in participants with type 1 Gaucher disease already receiving enzyme replacement therapy.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

This was a Phase 2, open-label study in participants with Gaucher disease, a lysosomal storage disorder. Afegostat tartrate (also known as AT2101 or isofagomine tartrate) is designed to act as a pharmacological chaperone by selectively binding to misfolded β-glucocerebrosidase (GCase) and helping it fold correctly, intended to restore GCase activity. The study consisted of a 14-day screening period, a 28-day treatment period, and a 7-day wash-out period. Participants received 1 of 4 dosing regimens for afegostat tartrate.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
30

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 2

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United States
    • California
      • San Francisco, California, United States, 94143
    • Florida
      • Coral Springs, Florida, United States, 33065
    • Georgia
      • Decatur, Georgia, United States, 30033
    • Iowa
      • Iowa City, Iowa, United States, 52242
    • New York
      • New York, New York, United States, 10016
    • Ohio
      • Cincinnati, Ohio, United States, 45229
    • Oregon
      • Portland, Oregon, United States, 97239
    • Pennsylvania
      • Philadelphia, Pennsylvania, United States, 19104
      • Pittsburgh, Pennsylvania, United States, 15213
    • Texas
      • Houston, Texas, United States, 77030

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years to 74 years (ADULT, OLDER_ADULT)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Had a confirmed diagnosis of type 1 Gaucher disease with a known documented missense gene mutation in at least 1 of the 2 gene-encoding β-glucosidase alleles
  • Clinically stable
  • Male or female participants, 18 to 74 years old inclusive
  • All participants of childbearing potential used adequate birth control
  • Provided written informed consent to participate in the study

Exclusion Criteria:

  • Clinically significant disease, severe complications from Gaucher disease, or serious illness that precluded participation in the study in the opinion of the Investigator that compromised the safety of the participant or precluded the participant from completing the study
  • During the screening period, any clinically significant findings, as deemed by the Investigator
  • Partial or total splenectomy (removal of spleen) within the 2 years prior to study entry
  • History of pulmonary hypertension or Gaucher related lung disease
  • History of allergy or sensitivity to the study drug or any excipients, including any prior serious adverse reaction to iminosugars (for example, N-butyldeoxynojirimycin or miglustat)
  • Pregnant or breast-feeding
  • Current/recent drug or alcohol abuse
  • Treatment with any investigational product in the 90 days before study entry
  • Treatment in the previous 90 days with any drug known to have a well-defined potential for toxicity to a major organ
  • Presence or symptoms of gastrointestinal, liver or kidney disease, or other conditions known to interfere with the absorption, distribution, metabolism, or excretion of drugs

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: TREATMENT
  • Allocation: RANDOMIZED
  • Interventional Model: PARALLEL
  • Masking: NONE

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
EXPERIMENTAL: Afegostat tartrate 25 milligrams (mg) once per day
Afegostat tartrate was administered orally during the 4-week treatment period.
Drug: Afegostat tartrate
Other Names:
  • isofagomine tartrate
  • AT2101
EXPERIMENTAL: Afegostat tartrate 150 mg once per day
Afegostat tartrate was administered orally once per day during the 4-week treatment period.
Drug: Afegostat tartrate
Other Names:
  • isofagomine tartrate
  • AT2101
EXPERIMENTAL: Afegostat tartrate 150 mg once every four days
Afegostat tartrate was administered orally once every 4 days during the 4-week treatment period.
Drug: Afegostat tartrate
Other Names:
  • isofagomine tartrate
  • AT2101
EXPERIMENTAL: Afegostat tartrate 150 mg once every seven days
Afegostat tartrate was administered orally once every 7 days during the 4-week treatment period.
Drug: Afegostat tartrate
Other Names:
  • isofagomine tartrate
  • AT2101

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Number Of Participants Who Experienced Severe Treatment-emergent Adverse Events (TEAEs)
Time Frame: Day 1 (after dosing) through Day 35
TEAEs were defined as any adverse event (AE) with a start date on or after administration of the study drug (on Day 1). A severe AE was defined as an AE that was incapacitating and required medical intervention. The number of participants who experienced 1 or more severe TEAEs after dosing on Day 1 through 7 days after the last dose of study drug (Day 35) is presented. A summary of serious and all other non-serious AEs regardless of causality is located in the Reported Adverse Events module.
Day 1 (after dosing) through Day 35

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Change From Baseline To End Of Treatment In Beta-glucocerebrosidase (GCase) Levels In White Blood Cells (WBC)
Time Frame: Baseline, Day 28
GCase is a biomarker used to assess the PD effects of afegostat tartrate. Blood samples were collected to assess GCase levels in WBC. The baseline value was defined as the last non-missing value before the start of study drug.
Baseline, Day 28

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Amicus Therapeutics

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (ACTUAL)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
March 23, 2007

Primary Completion (ACTUAL)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
February 19, 2008

Study Completion (ACTUAL)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
February 19, 2008

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
February 7, 2007

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
February 7, 2007

First Posted (ESTIMATE)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
February 9, 2007

Study Record Updates

Last Update Posted (ACTUAL)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
September 25, 2018

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
August 28, 2018

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
August 1, 2018

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • GAU-CL-201

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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