A Study to Evaluate Migalastat in Fabry Subjects With Amenable GLA Variant and Renal Disease

Amicus Therapeutics

Status and phase: Enrolling; Phase 3

Conditions: Fabry Disease

Treatments: Drug: migalastat HCl 150 mg

Study type: Interventional

Funder types: Industry

Identifiers

NCT04020055

AT1001-025

Details and patient eligibility

About

An Open-label Study to Evaluate the Safety and Pharmacokinetics of Migalastat HCl in Subjects with Fabry Disease and Amenable GLA Variants and Severe Renal Impairment (SRI) or End Stage Renal Disease (ESRD)

Full description

This is an open-label, non-comparative study for subjects with Fabry disease who have an estimated glomerular filtration rate (eGFR) based on the Modification of Diet in Renal Disease equation (eGFRMDRD) value of < 30 mL/min/1.73 m2. Subjects may have had previous exposure to migalastat, either commercially or as a participant in a previous migalastat study.

Two distinct populations of subjects with Fabry disease and renal impairment will be enrolled into this study:

• Cohort 1: Subjects with SRI not receiving any type of dialysis treatment
• Cohort 2: ESRD subjects who are receiving hemodialysis treatment, either standard hemodialysis (HD) or hemodiafiltration (HDF). Only subjects who can receive HD/HDF at the study clinic or at an affiliated center where the Investigator already has oversight should be enrolled into Cohort 2.

Subjects entering into this study will undergo screening (Visit 1) to confirm enrollment eligibility including confirmatory GLA genotyping. Subjects who meet eligibility criteria will have a Baseline Visit (Visit 2) within 30 days of screening. Subjects who do not meet eligibility criteria (eg, subjects with an eGFR > 30 mL/min/1.73 m2) may be re-screened.

Enrollment: 14 estimated patients

Sex: All

Ages: 18+ years old

Volunteers: No Healthy Volunteers

Inclusion criteria

1. Male or female subjects aged 18 years or older, diagnosed with Fabry disease.
2. Subject (or legally authorized representative as applicable) is willing and able to provide written informed consent and authorization for use and disclosure of Personal Health Information
3. Subject has a GLA variant that is amenable to migalastat recorded in their medical records
4. Subject has at least 1 documented eGFR value of < 30 mL/min/1.73 m2 within the last 3 months and has an eGFRMDRD value of < 30 mL/min/1.73 m2 at Visit 1
5. Subjects with ESRD have been on a stable 2- or 3-times a week HD (standard or HDF) regimen for at least 2 months prior to the screening visit
6. Subjects with ESRD must commit to completing at least 4 standard HD or HDF sessions during each 2-week dosing interval.
7. Subjects with ESRD must commit to completing the entire prescribed duration for each dialysis session.
8. If of reproductive potential, both male and female patients agree to use a medically accepted method of contraception

Exclusion criteria

1. Subject has undergone kidney transplantation
2. Subject is on peritoneal dialysis
3. Subject is treated or has been treated with another investigational drug (except migalastat) within the 30 days
4. Subject has undergone any gene therapy at any time prior to the study or anticipates undergoing gene therapy during the study.
5. Subject has had a documented transient ischemic attack, stroke, unstable angina, or myocardial infarction
6. Subject has clinically significant unstable cardiac disease
7. Subject has any intercurrent illness or condition that may preclude the subject from fulfilling the protocol requirements
8. Subject has a history of allergy or sensitivity to migalastat (including excipients) or other iminosugars (eg, miglustat, miglitol)
9. Subject requires concurrent treatment with Glyset® (miglitol), Replagal® (agalsidase alfa), or Fabrazyme® (agalsidase beta)
10. Subject requires concurrent treatment with Zavesca® (miglustat) or has been treated with Zavesca
11. Female subject is pregnant or breast-feeding
12. Subject is unable to comply with study requirements
13. In France only, protected persons as defined by the Public Health Code

Trial design

Primary purpose: Treatment

Allocation: Non-Randomized

Interventional model: Parallel Assignment

Masking: None (Open label)

---

14 participants in 2 patient groups

Cohort 1: Severe Renal Impairment

Experimental group

Description:

All subjects will receive migalastat 123 mg, equivalent to 150 mg migalastat HCl (hereafter, migalastat) at a dose regimen based on their eGFRMDRD result at Visit 1. Subjects will take 1 migalastat capsule orally with water either every 4 or 7 days.

Cohort 2: End-Stage Renal Disease

Experimental group

Description:

All hemodialysis subjects will receive migalastat 123 mg, equivalent to 150 mg migalastat HCl (hereafter, migalastat). Subjects will take 1 migalastat capsule orally with water every other week.

Treatment:

Drug: migalastat HCl 150 mg