Expanded Access for ATB200/AT2221 for the Treatment of IOPD

September 9, 2025 updated by: Amicus Therapeutics

Expanded Use Of Recombinant Human Acid Alpha-Glucosidase/N-butyl-deoxynojirimycin (ATB200/AT2221) For Patients With Infantile-Onset Pompe Disease

This is an expanded access program (EAP) for eligible participants designed to provide access to ATB200/AT2221.

Study Overview

Status

Status

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

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 program is being offered on a patient by patient basis.

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.
Expanded Access

Expanded Access Type

Expanded Access Type

Describes the category of expanded access under U.S. Food and Drug Administration (FDA) regulations. There are three types of expanded access:
  • Individual Patients: Allows a single patient, with a serious disease or condition who cannot participate in a clinical trial, access to a drug or biological product that has not been approved by the FDA. This category also includes access in an emergency situation.
  • Intermediate-size Population: Allows more than one patient (but generally fewer patients than through a Treatment IND/Protocol) access to a drug or biological product that has not been approved by the FDA. This type of expanded access is used when multiple patients with the same disease or condition seek access to a specific drug or biological product that has not been approved by the FDA.
  • Treatment IND/Protocol: Allows a large, widespread population access to a drug or biological product that has not been approved by the FDA. This type of expanded access can only be provided if the product is already being developed for marketing for the same use as the expanded access use.
  • Intermediate-size Population

Contacts and Locations

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

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Contact Backup

Study Locations

  • Italy
      • Padua, Italy
        • Available
        • University Hospital Of Padova
  • Taiwan
      • Taipei, Taiwan, 10002
        • Available
        • National Taiwan University Hospital
  • United States
    • California
      • Oakland, California, United States, 94609
        • Available
        • UCSF Benioff Children's Hospital Oakland
    • Florida
      • Gainesville, Florida, United States, 32610
        • Available
        • UF Health Shands Hospital

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

1 second to 17 years (Child)

Accepts Healthy Volunteers

N/A

Description

Inclusion Criteria:

  1. Patient is male or female and 0 to < 18 years old.
  2. Patient has a diagnosis of Pompe disease, based on documentation of GAA genotyping demonstrating variants associated with IOPD.
  3. Patient does not currently qualify for or is unable to enroll (eg, due to location, etc) in any commercial drug-sponsored ongoing clinical trial.
  4. Patient is currently being treated with an approved ERT and is declining (eg, worsening in motor function, respiratory function/parameters, cardiac function, etc) based on treating physician's clinical judgement.
  5. The patient's legal guardian or representative has given informed consent (and assent when age appropriate for regional requirements) to treatment prior to administering ATB200/AT2221 in a manner consistent with all national requirements.
  6. If of reproductive potential and sexually active, female subjects agree to use a highly effective method of contraception throughout the duration of the treatment and for up to 90 days after their last dose of ATB200/AT2221.

Exclusion Criteria:

  1. Patient has a hypersensitivity to any of the excipients in ATB200, alglucosidase alfa, or AT2221
  2. Patient has a medical or any other extenuating condition or circumstance that may, in the opinion of the investigator and/or Amicus, pose an undue safety risk to the patient.
  3. Concomitant use of miglitol (eg, Glyset), non-AT2221 form of miglustat (eg, Zavesca), acarbose (eg, Precose or Glucobay), voglibose (eg, Volix, Vocarb,or Volibo)

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?

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 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).
March 27, 2020

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.
March 27, 2020

First Posted (Actual)

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.
March 31, 2020

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 10, 2025

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.
September 9, 2025

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.
September 1, 2025

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.
  • ATB200-15

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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