Study to Evaluate the Safety of AT2220 (Duvoglustat) in Pompe Disease
Study Details
Study Description
Brief Summary
The main purpose of this study was to determine the safety and tolerability of 3 different doses of duvoglustat (AT2220) in participants affected by Pompe disease. The study also evaluated the effects of duvoglustat on functional parameters in Pompe disease.
Condition or Disease | Intervention/Treatment | Phase |
---|---|---|
Phase 2 |
Detailed Description
This was a Phase 2, open-label study in participants with Pompe disease, a lysosomal storage disorder. Duvoglustat is designed to act as a pharmacological chaperone of alpha-glucosidase, in order to restore enzyme activity. This study consisted of a 28-day screening period, an 11-week treatment period, and a 1-week follow-up period. Three dosing regimens of oral duvoglustat were to be evaluated (Cohort 1: 2.5 g daily for 3 days, followed by no study drug for 4 days; Cohort 2: 5 g daily for 3 days, followed by no study drug for 4 days; Cohort 3: 5 g daily for 7 days, followed by no study drug for 7 days).
Participants meeting all eligibility criteria underwent physical examination, electrocardiogram, spirometry, muscular strength test, functional muscle test, 6-minute walk test (when appropriate), laboratory tests, magnetic resonance imaging, and muscle (needle) biopsy. Quality of life was assessed via the 36-Item Short Form Health Survey questionnaire. Functional ability and level of handicap was assessed by Rotterdam handicap scale.
Study Design
Arms and Interventions
Arm | Intervention/Treatment |
---|---|
Experimental: Cohort 1 Regimen 1: Low-dose duvoglustat (2.5 grams [g]) once a day (QD) for 3 days, followed by no drug for 4 days, for 11 weeks. |
Drug: Duvoglustat
Powder in a bottle for dissolution in water for oral administration
Other Names:
|
Experimental: Cohort 2 Regimen 1: High-dose duvoglustat (5.0 g) QD for 3 days, followed by no drug for 4 days, for 11 weeks. |
Drug: Duvoglustat
Powder in a bottle for dissolution in water for oral administration
Other Names:
|
Experimental: Cohort 3 Regimen 2: High-dose duvoglustat (5.0 g) QD for 7 days, followed by no drug for 7 days, for 11 weeks. |
Drug: Duvoglustat
Powder in a bottle for dissolution in water for oral administration
Other Names:
|
Outcome Measures
Primary Outcome Measures
- Proportion Of Participants Experiencing Severe Treatment-emergent Adverse Events (TEAEs) [Baseline, Week 11]
The number of participants experiencing severe TEAEs is presented for participants who received duvoglustat treatment in this open-label study. The duration of duvoglustat exposure for Cohort 1 ranged from 2 to 24 days, and their exposure ranged from a total of 7,500 to 32,500 milligrams of duvoglustat. An adverse event (AE) refers to any unfavorable and unintended sign, symptom, syndrome, or illness that develops or worsens during the period of observation in the clinical study. The following guideline was used to grade the intensity of an AE: mild, the AE is easily tolerated and does not interfere with daily activity; moderate, the AE interferes with the daily activity but the participant is still able to function; severe, the AE is incapacitating and requires medical intervention. A summary of serious and all other non-serious AEs regardless of causality is located in the Reported Adverse Events module.
Secondary Outcome Measures
- Change In 6-minute Walk Test (6MWT) From Baseline To End Of Study [Baseline, Week 11]
The 6MWT (American Thoracic Society standards) was evaluated in ambulatory participants at screening, baseline, and to the end of the study. It was a standardized test that measured the distance in meters (m) covered over a 6-minute walk. Reference equations used (for 6MWT distance in healthy adults) included: (height in centimeters [cm], weight in kilograms [kg]) 6MWT distance for men = [7.57 × height (cm)] - [5.02 × age] - [1.76 × weight (kg)] - 309 m; 6MWT distance for women = [2.11 × height (cm)] - [5.78 × age] - [2.29 × weight (kg)] + 667 m
Eligibility Criteria
Criteria
Inclusion Criteria:
-
Male or female, 18 to 74 years of age inclusive
-
Diagnosis of Pompe disease based on clinical assessment, enzyme assay, and/or genotyping. Confirmatory genotyping will be performed on all participants who are screened for the study
-
Naïve to enzyme replacement therapy (ERT) or has not received ERT in the 3 months prior to screening
-
Willing not to initiate ERT or other prohibited treatment during study participation
-
Functional grade for arms and/or legs ≥2 OR sitting forced vital capacity ≥30% and <80% of predicted value, reproducible between screening and baseline (±15%)
-
Participants of reproductive potential agree to use reliable methods of contraception during the study
-
Participant or legal representative is willing and able to provide written informed consent
Exclusion Criteria:
-
Any intercurrent condition that may preclude accurate interpretation of study data
-
Obstructive pulmonary disease
-
Invasive ventilatory support
-
Use of noninvasive ventilatory support >8 hours/day while awake
-
History of QTc prolongation >450 milliseconds (msec) for males and >470 msec for females
-
History of allergy or sensitivity to the study drug, including any prior serious adverse reaction to iminosugars (such as miglustat or miglitol)
-
Pregnancy or breast-feeding
-
Current or recent drug or alcohol abuse
-
Treatment with another investigational drug within 30 days of study start
-
Use of prohibited medications ≤3 months prior to screening
-
Otherwise unsuitable for the study in the opinion of the Investigator
Contacts and Locations
Locations
Site | City | State | Country | Postal Code | |
---|---|---|---|---|---|
1 | Decatur | Georgia | United States | 30033 |
Sponsors and Collaborators
- Amicus Therapeutics
Investigators
- Study Director: Medical Monitor Clinical Research, Amicus Therapeutics
Study Documents (Full-Text)
None provided.More Information
Publications
None provided.- POM-CL-201
Study Results
Participant Flow
Recruitment Details | |
---|---|
Pre-assignment Detail |
Arm/Group Title | Cohort 1 | Cohort 2 | Cohort 3 |
---|---|---|---|
Arm/Group Description | Regimen 1: Low-dose duvoglustat (2.5 grams [g]) once a day (QD) for 3 days, followed by no drug for 4 days, for 11 weeks. | Regimen 1: High-dose duvoglustat (5.0 g) QD for 3 days, followed by no drug for 4 days, for 11 weeks. | Regimen 2: High-dose duvoglustat (5.0 g) QD for 7 days, followed by no drug for 7 days, for 11 weeks. |
Period Title: Overall Study | |||
STARTED | 3 | 0 | 0 |
Received at Least 1 Dose of Study Drug | 3 | 0 | 0 |
COMPLETED | 0 | 0 | 0 |
NOT COMPLETED | 3 | 0 | 0 |
Baseline Characteristics
Arm/Group Title | Cohort 1 | Cohort 2 | Cohort 3 | Total |
---|---|---|---|---|
Arm/Group Description | Regimen 1: Low-dose duvoglustat (2.5 g) QD for 3 days, followed by no drug for 4 days, for 11 weeks. | Regimen 1: High-dose duvoglustat (5.0 g) QD for 3 days, followed by no drug for 4 days, for 11 weeks. | Regimen 2: High-dose duvoglustat (5.0 g) QD for 7 days, followed by no drug for 7 days, for 11 weeks. | Total of all reporting groups |
Overall Participants | 3 | 0 | 0 | 3 |
Age (years) [Mean (Standard Deviation) ] | ||||
Mean (Standard Deviation) [years] |
49.07
(11.02)
|
49.07
(11.02)
|
||
Sex: Female, Male (Count of Participants) | ||||
Female |
2
66.7%
|
2
Infinity
|
||
Male |
1
33.3%
|
1
Infinity
|
Outcome Measures
Title | Proportion Of Participants Experiencing Severe Treatment-emergent Adverse Events (TEAEs) |
---|---|
Description | The number of participants experiencing severe TEAEs is presented for participants who received duvoglustat treatment in this open-label study. The duration of duvoglustat exposure for Cohort 1 ranged from 2 to 24 days, and their exposure ranged from a total of 7,500 to 32,500 milligrams of duvoglustat. An adverse event (AE) refers to any unfavorable and unintended sign, symptom, syndrome, or illness that develops or worsens during the period of observation in the clinical study. The following guideline was used to grade the intensity of an AE: mild, the AE is easily tolerated and does not interfere with daily activity; moderate, the AE interferes with the daily activity but the participant is still able to function; severe, the AE is incapacitating and requires medical intervention. A summary of serious and all other non-serious AEs regardless of causality is located in the Reported Adverse Events module. |
Time Frame | Baseline, Week 11 |
Outcome Measure Data
Analysis Population Description |
---|
Safety Population: All participants who received at least 1 dose of duvoglustat. |
Arm/Group Title | Cohort 1 | Cohort 2 | Cohort 3 |
---|---|---|---|
Arm/Group Description | Regimen 1: Low-dose duvoglustat (2.5 g) QD for 3 days, followed by no drug for 4 days, for 11 weeks. | Regimen 1: High-dose duvoglustat (5.0 g) QD for 3 days, followed by no drug for 4 days, for 11 weeks. | Regimen 2: High-dose duvoglustat (5.0 g) QD for 7 days, followed by no drug for 7 days, for 11 weeks. |
Measure Participants | 3 | 0 | 0 |
Count of Participants [Participants] |
1
33.3%
|
Title | Change In 6-minute Walk Test (6MWT) From Baseline To End Of Study |
---|---|
Description | The 6MWT (American Thoracic Society standards) was evaluated in ambulatory participants at screening, baseline, and to the end of the study. It was a standardized test that measured the distance in meters (m) covered over a 6-minute walk. Reference equations used (for 6MWT distance in healthy adults) included: (height in centimeters [cm], weight in kilograms [kg]) 6MWT distance for men = [7.57 × height (cm)] - [5.02 × age] - [1.76 × weight (kg)] - 309 m; 6MWT distance for women = [2.11 × height (cm)] - [5.78 × age] - [2.29 × weight (kg)] + 667 m |
Time Frame | Baseline, Week 11 |
Outcome Measure Data
Analysis Population Description |
---|
Safety Population: All participants who received at least 1 dose of duvoglustat. |
Arm/Group Title | Cohort 1 | Cohort 2 | Cohort 3 |
---|---|---|---|
Arm/Group Description | Regimen 1: Low-dose duvoglustat (2.5 g) QD for 3 days, followed by no drug for 4 days, for 11 weeks. | Regimen 1: High-dose duvoglustat (5.0 g) QD for 3 days, followed by no drug for 4 days, for 11 weeks. | Regimen 2: High-dose duvoglustat (5.0 g) QD for 7 days, followed by no drug for 7 days, for 11 weeks. |
Measure Participants | 3 | 0 | 0 |
Mean (Standard Deviation) [m] |
-19.660
(41.1845)
|
Adverse Events
Time Frame | Day 1 (after dosing) through end of follow up. | |||||
---|---|---|---|---|---|---|
Adverse Event Reporting Description | Due to the discontinuation of the study, AEs were not encoded. | |||||
Arm/Group Title | Cohort 1 | Cohort 2 | Cohort 3 | |||
Arm/Group Description | Regimen 1: Low-dose duvoglustat (2.5 g) QD for 3 days, followed by no drug for 4 days, for 11 weeks. | Regimen 1: High-dose duvoglustat (5.0 g) QD for 3 days, followed by no drug for 4 days, for 11 weeks. | Regimen 2: High-dose duvoglustat (5.0 g) QD for 7 days, followed by no drug for 7 days, for 11 weeks. | |||
All Cause Mortality |
||||||
Cohort 1 | Cohort 2 | Cohort 3 | ||||
Affected / at Risk (%) | # Events | Affected / at Risk (%) | # Events | Affected / at Risk (%) | # Events | |
Total | / (NaN) | / (NaN) | / (NaN) | |||
Serious Adverse Events |
||||||
Cohort 1 | Cohort 2 | Cohort 3 | ||||
Affected / at Risk (%) | # Events | Affected / at Risk (%) | # Events | Affected / at Risk (%) | # Events | |
Total | 2/3 (66.7%) | 0/0 (NaN) | 0/0 (NaN) | |||
General disorders | ||||||
Muscular weakness | 2/3 (66.7%) | 0/0 (NaN) | 0/0 (NaN) | |||
Other (Not Including Serious) Adverse Events |
||||||
Cohort 1 | Cohort 2 | Cohort 3 | ||||
Affected / at Risk (%) | # Events | Affected / at Risk (%) | # Events | Affected / at Risk (%) | # Events | |
Total | 3/3 (100%) | 0/0 (NaN) | 0/0 (NaN) | |||
General disorders | ||||||
Muscular weakness | 2/3 (66.7%) | 0/0 (NaN) | 0/0 (NaN) | |||
Flatulence | 1/3 (33.3%) | 0/0 (NaN) | 0/0 (NaN) | |||
Abdominal pain upper | 1/3 (33.3%) | 0/0 (NaN) | 0/0 (NaN) | |||
Alanine aminotransferase increased | 3/3 (100%) | 0/0 (NaN) | 0/0 (NaN) | |||
Aspartate aminotransferase increased | 3/3 (100%) | 0/0 (NaN) | 0/0 (NaN) | |||
Blood creatine phosphokinase increased | 3/3 (100%) | 0/0 (NaN) | 0/0 (NaN) | |||
Fall | 2/3 (66.7%) | 0/0 (NaN) | 0/0 (NaN) | |||
Dysphagia | 1/3 (33.3%) | 0/0 (NaN) | 0/0 (NaN) | |||
Joint injury | 1/3 (33.3%) | 0/0 (NaN) | 0/0 (NaN) |
Limitations/Caveats
More Information
Certain Agreements
Principal Investigators are NOT employed by the organization sponsoring the study.
The investigator can only publish the results from this trial provided they supply the sponsor (or authorized entity) a copy of any proposed publication for review. If requested, the investigator will remove information deemed confidential or proprietary by the sponsor and will withhold publication for an additional period of time to allow the sponsor to take appropriate measures to establish and preserve its proprietary rights.
Results Point of Contact
Name/Title | Amicus Therapeutics |
---|---|
Organization | Patient Advocacy |
Phone | +1-609-662-2000 |
clinicaltrials@amicusrx.com |
- POM-CL-201