E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
Fabry Subjects with Amenable GLA Variants and Severe Renal Impairment |
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E.1.1.1 | Medical condition in easily understood language |
Fabry disease with severe kidney disease |
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E.1.1.2 | Therapeutic area | Diseases [C] - Congenital, Hereditary, and Neonatal Diseases and Abnormalities [C16] |
MedDRA Classification |
E.1.2 Medical condition or disease under investigation |
E.1.2 | Version | 20.0 |
E.1.2 | Level | PT |
E.1.2 | Classification code | 10016016 |
E.1.2 | Term | Fabry's disease |
E.1.2 | System Organ Class | 10010331 - Congenital, familial and genetic disorders |
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E.1.3 | Condition being studied is a rare disease | Yes |
E.2 Objective of the trial |
E.2.1 | Main objective of the trial |
To characterize the pharmacokinetics (PK) of migalastat and validate the population PK (popPK) model and simulations for dose selection in Fabry subjects with severe renal impairment |
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E.2.2 | Secondary objectives of the trial |
• To assess the safety and tolerability of migalastat in Fabry subjects with severe renal impairment
• To evaluate the pharmacodynamics (PD) of migalastat in subjects with Fabry disease and severe renal impairment |
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E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
1. Male or female subjects aged 16 years or older, diagnosed with Fabry disease.
2. Subject is willing and able to provide written informed consent and authorization for use and disclosure of Personal Health Information or research-related health information or subject has a legally authorized representative who has provided written informed consent and authorization, and provides assent, if applicable.
3. Subject has a GLA variant (the gene encoding human α-Gal A) recorded in their medical records that is amenable to migalastat.
- Subjects who do not have a GLA genotype result from a prior Amicus study must have a blood sample drawn for confirmatory GLA genotyping at Visit 1.
- For subjects without a known amenable GLA variant, GLA genotyping must be performed prior to Visit 2.
- For subjects with a GLA variant that has not yet been tested in the Migalastat Amenability Assay, amenability testing must be completed before Visit 2.
4. Subject has at least 1 documented eGFR value of < 30 mL/min/1.73 m2 in his/her medical history within the last 3 months and has an eGFR value of < 30 mL/min/1.73 m2 at Visit 1 per the central laboratory.
5. If of reproductive potential, both male and female patients agree to use a medically accepted method of contraception during the study and for up to 30 days after the last dose of migalastat. |
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E.4 | Principal exclusion criteria |
1. Subject has an eGFR of ≥ 30 mL/min/1.73 m2 at Visit 1 per the central laboratory.
2. Subject has undergone kidney transplantation or is currently on dialysis, or is planned to start dialysis within 3 months of Visit 1.
3. Subject is treated or has been treated with another investigational drug (except migalastat) within the 30 days before Visit 1.
4. Subject has undergone any gene therapy at any time prior to the study and anticipates undergoing gene therapy during the study.
5. Subject has had a documented transient ischemic attack, stroke, unstable angina, or myocardial infarction within the 3 months before Visit 1.
6. Subject has clinically significant unstable cardiac disease in the opinion of the investigator (eg, cardiac disease requiring active management, such as symptomatic arrhythmia, unstable angina, or New York Heart Association Class III or IV congestive heart failure).
7. Subject has any intercurrent illness or condition that may preclude the subject from fulfilling the protocol requirements or suggests to the investigator that the potential subject may have an unacceptable risk by participating in this study.
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 within the 30 days before Visit 1.
11. Female subject is pregnant or breast-feeding.
12. Subject is unable to comply with study requirements, or deemed otherwise unsuitable for study entry, in the opinion of the investigator. |
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E.5 End points |
E.5.1 | Primary end point(s) |
Pharmacokinetic parameters and model validation will be estimated based on concentrations of migalastat in plasma and urine. |
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E.5.1.1 | Timepoint(s) of evaluation of this end point |
Plasma sampling:
-Visit 2 (Week 0): Just prior to first dose of migalastat and 3 hours postdose
-Visit 3 (Week 4-8): Subjects starting at a Q4D regimen will have PK assessments conducted predose and at 1, 2, 3, 4, 6, 8, 12, 24, 48, and 96 hours postdose. Subjects on a Q7D regimen will have PK assessments conducted predose and at 1, 2, 3, 4, 6, 8, 12, 24, 48, 96, and 168 hours postdose.
-Visit 4 (Week 12): Just prior to last administration of migalastat and 3 hours postdose
Urine sampling:
-Visit 3 (Week 4-8): Within 1 hour before dosing followed by a postdose total urine collection for 24 hours in 4 incremental collections: from 0 to 4 hours, 4 to 8 hours, 8 to 12 hours, and 12 to 24 hours. Collection intervals will be the same for subjects on a Q4D regimen and a Q7D regimen.
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E.5.2 | Secondary end point(s) |
• Safety parameters include adverse events, clinical laboratory measures, physical examinations, vital signs, and electrocardiograms.
• Change from baseline in eGFRMDRD, eGFRCKD-EPI, plasma lyso-Gb3, and LVMi. |
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E.5.2.1 | Timepoint(s) of evaluation of this end point |
Safety parameters include:
-adverse events: Day -30 to -1, prior to Week (W) 0, W 0, W 4-8, W 12 or upon early termination and W 14
-clinical laboratory measures: Day -30 to -1, prior to W 0, W 0, W 12 or upon early termination and W 14
-physical examinations: Day -30 to -1, prior to W 0, W 0, W 12 or upon early termination and W 14
-vital signs: Day -30 to -1, prior to W 0, W 0, W 4-8, W 12 or upon early termination and W 14
-electrocardiograms: Day -30 to -1, prior to W 0, W 0, W 12 or upon early termination and W 14
Change from baseline in:
-eGFRMDRD, eGFRCKD-EPI: W 0, W 12 or upon early termination and W 14
-plasma lyso-Gb3: W 0, W 4-8 and W 12 or upon early termination
-LVMi: W 0 and W 12 or upon early termination
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E.6 and E.7 Scope of the trial |
E.6 | Scope of the trial |
E.6.1 | Diagnosis | No |
E.6.2 | Prophylaxis | No |
E.6.3 | Therapy | Yes |
E.6.4 | Safety | Yes |
E.6.5 | Efficacy | Yes |
E.6.6 | Pharmacokinetic | Yes |
E.6.7 | Pharmacodynamic | Yes |
E.6.8 | Bioequivalence | No |
E.6.9 | Dose response | Yes |
E.6.10 | Pharmacogenetic | No |
E.6.11 | Pharmacogenomic | No |
E.6.12 | Pharmacoeconomic | No |
E.6.13 | Others | No |
E.7 | Trial type and phase |
E.7.1 | Human pharmacology (Phase I) | No |
E.7.1.1 | First administration to humans | No |
E.7.1.2 | Bioequivalence study | No |
E.7.1.3 | Other | No |
E.7.1.3.1 | Other trial type description | |
E.7.2 | Therapeutic exploratory (Phase II) | No |
E.7.3 | Therapeutic confirmatory (Phase III) | Yes |
E.7.4 | Therapeutic use (Phase IV) | No |
E.8 Design of the trial |
E.8.1 | Controlled | No |
E.8.1.1 | Randomised | No |
E.8.1.2 | Open | Yes |
E.8.1.3 | Single blind | No |
E.8.1.4 | Double blind | No |
E.8.1.5 | Parallel group | No |
E.8.1.6 | Cross over | No |
E.8.1.7 | Other | No |
E.8.2 | Comparator of controlled trial |
E.8.2.1 | Other medicinal product(s) | No |
E.8.2.2 | Placebo | No |
E.8.2.3 | Other | No |
E.8.2.4 | Number of treatment arms in the trial | 2 |
E.8.3 |
The trial involves single site in the Member State concerned
| Yes |
E.8.4 | The trial involves multiple sites in the Member State concerned | No |
E.8.5 | The trial involves multiple Member States | Yes |
E.8.5.1 | Number of sites anticipated in the EEA | 8 |
E.8.6 Trial involving sites outside the EEA |
E.8.6.1 | Trial being conducted both within and outside the EEA | Yes |
E.8.6.2 | Trial being conducted completely outside of the EEA | No |
E.8.6.3 | If E.8.6.1 or E.8.6.2 are Yes, specify the regions in which trial sites are planned |
Belgium |
France |
Italy |
Japan |
Spain |
United Kingdom |
United States |
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E.8.7 | Trial has a data monitoring committee | No |
E.8.8 |
Definition of the end of the trial and justification where it is not the last
visit of the last subject undergoing the trial
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E.8.9 Initial estimate of the duration of the trial |
E.8.9.1 | In the Member State concerned years | 2 |
E.8.9.1 | In the Member State concerned months | |
E.8.9.1 | In the Member State concerned days | |
E.8.9.2 | In all countries concerned by the trial years | 2 |