A Study to Evaluate the Safety, Efficacy, PK, PD and Immunogenicity of Cipaglucosidase Alfa/Miglustat in IOPD Subjects Aged 0 to <18 (ROSSELLA)

January 20, 2026 updated by: Amicus Therapeutics

An Open-label Study to Evaluate the Safety, Efficacy, Pharmacokinetics, Pharmacodynamics, and Immunogenicity of Cipaglucosidase Alfa/Miglustat in Both ERT-experienced and ERT-naïve Pediatric Subjects With Infantile-onset Pompe Disease Aged 0 to < 18 Years

This is a Phase 3, open-label, multicenter study to evaluate the safety, efficacy, PK, PD, and immunogenicity of cipaglucosidase alfa/miglustat treatment in ERT-experienced and ERT-naïve pediatric subjects with IOPD.

Study Overview

Status

Status

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

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.

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 (Estimated)

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.
36

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 3

Expanded Access

Expanded Access

A way for patients with serious diseases or conditions who cannot participate in a clinical trial to gain access to a medical product that has not been approved by the U.S. Food and Drug Administration (FDA). Also called compassionate use. There are different expanded access types.
Available

Available

  • Available: Expanded access is currently available for this investigational treatment, and patients who are not participants in the clinical study may be able to gain access to the drug, biologic, or medical device being studied.
  • No longer available: Expanded access was available for this intervention previously but is not currently available and will not be available in the future.
  • Temporarily not available: Expanded access is not currently available for this intervention but is expected to be available in the future.
  • Approved for marketing: The intervention has been approved by the U.S. Food and Drug Administration for use by the public.
 outside the clinical trial. See expanded access record.

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

  • Germany
      • Giessen, Germany, 35392
        • Recruiting
        • Universitätsklinikum Gießen und Marburg GmbH, Zentrum fur Kinderheilkunde und Jugendmedizin Abteilung fur Kinderneurologic, Sozialpadiatric und Epileptologie
      • Heidelberg, Germany, 69120
        • Recruiting
        • Universitätsklinikum Heidelberg - Pädiatrisches Klinisch-Pharmakologisches Studienzentrum (paedKliPS)
      • Höchheim, Germany, 65239
        • Recruiting
        • SphinCS GmbH
      • Münster, Germany, 48149
        • Recruiting
        • Universitätsklinikum Münster Klinik für Kinder- und Jugendmedizin Albert-Schweitzer-Campus 1
  • Italy
      • Naples, Italy, 80131
        • Recruiting
        • AOU Federico II
  • Netherlands
      • Rotterdam, Netherlands, 3015 GD
        • Recruiting
        • Erasmus MC, Sophia Kinderziekenhuis
  • Taiwan
      • Taipei, Taiwan, 100
        • Withdrawn
        • National Taiwan University Hospital
  • United Kingdom
      • London, United Kingdom, WC1N3JH
        • Recruiting
        • Great Ormond Street Hospital For Children NHS Foundation Trust
  • United States
    • Florida
      • Gainesville, Florida, United States, 32610
        • Recruiting
        • University of Florida Clinical Research Center
    • Georgia
      • Atlanta, Georgia, United States, 30322
        • Recruiting
        • The Emory Clinic
    • North Carolina
      • Durham, North Carolina, United States, 27710
        • Recruiting
        • Duke University Early Phase Research Unit
    • Ohio
      • Cincinnati, Ohio, United States, 54229
        • Recruiting
        • Cincinnati Children's Hospital Medical Center
    • Pennsylvania
      • Pittsburgh, Pennsylvania, United States, 15224
        • Recruiting
        • UPMC Hospital of Pittsburgh
    • Utah
      • Salt Lake City, Utah, United States, 84108
        • Recruiting
        • University of Utah, Clinical and Translational Sciences Institute

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

No older than 17 years (Child)

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

Cohort 1:

  1. Male or female subjects who are aged 6 months to < 18 years on Day 1
  2. Subject must have documentation of IOPD genotype
  3. Subject must have had hypertrophic cardiomyopathy at the time of diagnosis
  4. Subject must have received ERT for at least 6 months immediately before enrollment. For subjects whose ERT dosage has been modified, the subject must have been on the modified dosage and regimen for at least 3 months before enrollment
  5. Subjects aged ≥ 12 to < 18 years must perform one valid 6-minute walk test (6MWT) (≥ 75 meters) at screening; Subjects aged ≥ 5 to < 12 years must perform one valid 6MWT (≥ 40 meters) at screening; Subjects aged 18 months to < 5 years must be ambulatory and assessed to be likely to be able to perform 6MWT (≥ 40 meters) when they turn 5 years old
  6. Subjects must have experienced a clinical decline on their current rhGAA dose and frequency

Cohort 2:

  1. Male or female subjects who are aged 0 to <6 months at Day 1
  2. Subject must have documentation of IOPD genotype
  3. Subject must have had hypertrophic cardiomyopathy at the time of diagnosis
  4. Subject is ERT-naïve

Long-term Extension (Cohort 1 or Cohort 2):

1. Subject must have, in the opinion of the investigator, benefited from therapy with cipaglucosidase alfa/miglustat during the 104-week primary treatment period with no significant safety concerns.

Exclusion Criteria:

Cohort 1 and Cohort 2, unless specified

  1. Subject requires invasive ventilation (eg, tracheostomy)
  2. Subject is CRIM negative and has not received prophylactic immunomodulation (Cohort 1); Subject is CRIM negative and will not be receiving prophylactic immunomodulation (Cohort 2)
  3. Subject has a history of life-threatening IARs/hypersensitivity (eg, anaphylaxis and severe cutaneous reactions) to ERT (eg, alglucosidase alfa, cipaglucosidase alfa, miglustat) or other iminosugars, or to any of the excipients, where rechallenge was unsuccessful
  4. Subject has prior history of illness or condition known to affect motor function
  5. Female subject is pregnant (or intends to get pregnant) or breastfeeding at screening (Cohort 1)

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: Non-Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

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: Cohort 1: Cipaglucosidase Alfa/Miglustat in ERT-experienced pediatric IOPD subjects
Pediatric IOPD subjects 6 months to <18 years experiencing clinical decline
Biological: Cipaglucosidase alfa
Sterile lyophilized powder intravenous (IV) infusion
Other Names:
  • ATB200
Drug: Miglustat
65 mg oral capsules
Other Names:
  • AT2221
Experimental: Cohort 2: Cipaglucosidase Alfa/Miglustat in ERT-naïve pediatric IOPD subjects
Pediatric IOPD subjects <6 months
Biological: Cipaglucosidase alfa
Sterile lyophilized powder intravenous (IV) infusion
Other Names:
  • ATB200
Drug: Miglustat
65 mg oral capsules
Other Names:
  • AT2221

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
Time Frame
Proportion of subjects with infusion-associated reactions (IARs)
Time Frame: 104 weeks
104 weeks

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.
July 18, 2023

Primary Completion (Estimated)

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.
July 1, 2027

Study Completion (Estimated)

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.
July 1, 2027

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 10, 2021

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 17, 2021

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 22, 2021

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.
January 22, 2026

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.
January 20, 2026

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.
January 1, 2026

More Information

Terms related to this study

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.
  • ATB200-08

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

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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