Agalsidase Beta Long-Term Treatment Outcome for Fabry Disease Patients With IVS4 Mutation in Taiwan

Plain-language summary

This study examines the long-term outcomes of Agalsidase beta treatment in patients with Fabry disease who carry the IVS4 mutation in the GLA gene in Taiwan. It enrolls patients aged 18 and older grouped into different cohorts based on their treatment history. It is an observational study with no assigned phase and is currently active but not recruiting new participants (active, not recruiting).

The summary above is a plain-language rendering of the official record. The original English title is shown for reference.

Trial details

Phase

N/A

Status

Active, not recruiting

Sponsor

Sanofi

Start date

9/13/2023

Estimated completion

9/10/2026

Countries

Taiwan

Related genes

Locations

• Taichung, Taiwan
• Tainan, Taiwan
• Taipei, Taiwan
• Taipei, Taiwan
• Taipei, Taiwan

Eligibility criteria

Criteria are reproduced from the ClinicalTrials.gov record in the original English. Only the trial team can determine eligibility.

Inclusion Criteria:

\- Provide signed informed consent.

Cohort 1:

* Male or female Fabry disease patient with documented GLA IVS4 in medical record.
* Age ≥ 18 years old at the time of signing informed consent.
* The maximum proportion of female is 20% of cohort 1.
* Patient who has received agalsidase beta treatment for at least 6 months.
* The data of LVMI, LPWT, IVST and blood lyso-Gb3 concentration are all available within 6 months prior to agalsidase beta treatment initiation.

Cohort 2:

* Male or female Fabry disease patient with documented GLA IVS4 in medical record.
* Age ≥ 18 years old at the time of signing informed consent.
* The maximum proportion of female is 20% of cohort 2.
* Patient who plans to apply for the National Health Insurance Reimbursement for agalsidase beta medication.
* The data of LVMI, LPWT, IVST and blood lyso-Gb3 concentration are all available within 6 months prior to agalsidase beta treatment initiation.

Cohort 3:

* Male or female Fabry disease patients with documented GLA IVS4 mutation in medical record.
* Male patient is aged ≥ 30 years old and female patient is aged ≥ 40 years old at the time of signing informed consent.
* The maximum proportion of female is 20% of cohort 3.
* Patient who has never received agalsidase alpha or agalsidase beta treatment (ERT-naïve).
* Elevated blood lyso-Gb3.
* At least ONE of the following conditions documented in medical record:

  1. cardiac parameter abnormalities (e.g. via imaging, electrophysiology, or biomarker);
  2. at least one FD-related sign/symptom.
* The data of LVMI, LPWT, IVST and blood lyso-Gb3 concentration are all available within 6 months.
* Patients who are expected not to receive ERT or FD-specific treatment per investigator's judgement.

Exclusion Criteria:

* Any condition that, in the opinion of the Investigator, may interfere with patient's participation in the study, such as life expectancy of less than 6 months (e.g. diagnosed with malignancy, CAD)
* Fabry patients who have severe heart disease (NYHA Class IV) or severe myocardial fibrosis per investigator judgement
* Known non-Fabry disease infiltrative cardiomyopathy including amyloidosis
* Known non-GLA genetic (e.g., sarcomeric, metabolic mutations) hypertrophic cardiomyopathy.
* Patients who are receiving any Fabry disease-specific treatment (enzyme replacement therapy, chaperone therapy, substrate reduction therapy, or gene therapy) other than agalsidase beta for Fabry disease
* Pregnancy or suspected pregnancy
* Patient diagnosed with moderate to severe dementia
* Unstable patient condition as judged by investigator (e.g., hypertension, diabetes, and systematic disease)