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Myozyme

Phase 4FDA approved 2006

Pompe Disease Late-Onset | Monoclonal antibody | Rare Disease |Sanofi|Trials Updated: Apr 28, 2015

Myozyme development status

FDA approval Apr 28, 2006
Approval holderGenzyme
ApplicationBLA125141
Highest phase Phase 4 (NCT01597596)
Phase scored for SNYPhase 3
Registered trials 26 across 3 sponsors since Jan 2003

Myozyme target and mechanism

ModalityMonoclonal antibody

Also known as alglucosidase alfa, Alglucosidase alfa GZ419829, Recombinant human acid glucosidase, Lumizyme

Success Probability

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Market & Valuation

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Trial Design

UNCONTROLLEDDMC
Total Trials9
Total Enrollment162

FDA Designations

No designations recorded

Myozyme clinical trials

Myozyme · 9 trials · 9 indications

Phase 3 2Phase 2 6Phase 1 1
NCT00268944Safety and Effectiveness Study of rhGAA in Patients With Advanced Late-Onset Pompe Disease Receiving Respiratory SupportPompe Disease (Late-onset)
COMPLETED5 Analytics
NCT00158600A Placebo-Controlled Study of Safety and Effectiveness of Myozyme (Alglucosidase Alfa) in Patients With Late-Onset Pompe DiseasePompe Disease (Late-onset)
COMPLETED90 Analytics
PHASE3COMPLETED
Safety and Effectiveness Study of rhGAA in Patients With Advanced Late-Onset Pompe Disease Receiving Respiratory Support
Pompe Disease (Late-onset)Unlock trial analytics
PHASE3COMPLETED
A Placebo-Controlled Study of Safety and Effectiveness of Myozyme (Alglucosidase Alfa) in Patients With Late-Onset Pompe Disease
Pompe Disease (Late-onset)Unlock trial analytics

Study Endpoints

Primary Endpoints

Treatment effect on muscle strength and functional status.
six months and one year
Treatment effect on pulmonary function and/or ventilation conditions.
six months and one year
Treatment effect on cardiomyopathy noted at inclusion
six months and one year
Treatment effect on fatigue.
six months and one year
Treatment effect on quality of life.
six months and one year
Treatment effect on muscular atrophy.
six months and one year
Overall patient satisfaction with treatment (visual analog scale).
six months and one year
Pharmacodynamics assessment.
six months and one year
Summary of Patients Reporting Treatment-Emergent Adverse Events
weeks 0-78

Overall safety summary of patients experiencing Adverse Events (AEs), Serious Adverse Events (SAEs), treatment-related AEs, and Infusion Associated Reactions (IARs). Summary is based on Treatment-emergent AEs (TEAEs), defined as AEs that occurred following the initiation of study treatment, i.e., alglucosidase alfa or placebo.

Mean Distance Walked as Measured by Six-minute Walk Test (6MWT) at Weeks 0 and 78, and Mean Change From Baseline
weeks 0, 78

Mean distance walked gives an indication of functional endurance. The greater the distance, the greater the endurance. Mean values of distance walked in a six-minute walk test are offered for baseline, week 78 (or last available observation), and the mean change from baseline (at week 78 or last available post-baseline observation).

Percent of Predicted Forced Vital Capacity (FVC)
weeks 0, 78

Forced vital capacity is a standard pulmonary function test used to quantify respiratory muscle weakness. Forced vital capacity (FVC) is the volume of air that can forcibly be blown out after full inspiration in the upright position, measured in liters. Predicted forced vital capacity is based on a formula using sex, age and height of a person, and is an estimate of healthy lung capacity. Percent of predicted FVC = (observed value)/(predicted value) \* 100%.

Recombinant Human Acid Alpha-Glucosidase (rhGAA) Pharmacokinetic Parameters: Area Under the Curve (AUC)
weeks 0, 12 and 52

Area under the plasma concentration versus time curve from time zero (pre-dose) to 16 hours after the end of infusion. Blood sample time points were 0 (before the start of the infusion), 1 and 2 hours after the start of infusion, end of the infusion, and then 0.25, 0.5, 1, 2, 3, 4, 8, 12,and 16 hours after the end of the infusion (with a 5-minute window for time-points after the start of infusion). Pooled figures combine the values for the three timeframes.

Recombinant Human Acid Alpha-Glucosidase (rhGAA) Pharmacokinetic Parameters: Mean Maximum Plasma Concentration(Cmax)
weeks 0, 12, 52

Maximum plasma concentration observed in blood samples taken at the following time points: 0 (before the start of the infusion), 1 and 2 hours after the start of infusion, end of the infusion, and then 0.25, 0.5, 1, 2, 3, 4, 8, 12,and 16 hours after the end of the infusion (with a 5-minute window for time-points after the start of infusion). Pooled figures combine the values for the three timeframes.

Recombinant Human Acid Alpha-Glucosidase (rhGAA) Pharmacokinetic Parameters: Mean Time to Maximum Plasma Concentration(Tmax)
weeks 0, 12, 52

Time to maximum plasma concentration observed in blood samples taken at the following time points: 0 (before the start of the infusion), 1 and 2 hours after the start of infusion, end of the infusion, and then 0.25, 0.5, 1, 2, 3, 4, 8, 12,and 16 hours after the end of the infusion (with a 5-minute window for time-points after the start of infusion). Pooled figures combine the values for the three timeframes.

Long-term Safety and Efficacy
52 weeks
safety and PK profile rhGAA
74 weeks
FVC
74 weeks
MMT
74 weeks
Effect of treatment on muscle function
74 weeks
Evaluate the safety profile of MZ
52 weeks
To estimate the proportion of patients treated w/ MZ who were alive and free of ventilator support at 12 months of age; compared to historical cohort
52 weeks
Determine PK/PD profile of MZ
52 weeks
Determine effect of different doses of MZ on safety and efficacy
52 weeks
The objective of this extension study was to monitor the long-term safety and efficacy
3 years
The objective of this extension study was to monitor the long-term safety and efficacy of a single patient
3 years
Evaluate safety, pharmacokinetics and pharmacodynamics
52 weeks
Evaluate differences in skeletal muscle gene expression in sibling pair with identical GAA mutations
52 weeks
Evaluate differences in skeletal muscle expression prior to and after ERT
52 weeks
Evaluate the safety of Myozyme
52 weeks
Determine proportion of patients alive over the course of treatment
52 weeks
PK profile of MZ
52 weeks
PD profile of MZ
52 weeks

Secondary Endpoints

Percent Predicted Proximal Muscle Strength of the Lower Limbs as Measured by Quantitative Muscle Testing (QMT)
weeks 0, 78
Health-related Quality of Life Survey Values Related to Physical Components as Measured by the Medical Outcomes Study (MOS) Short Form-36 Health Survey
weeks 0, 78
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Study Design & Arms

AllocationNON_RANDOMIZED
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
1EXPERIMENTAL -
alglucosidase alfaACTIVE_COMPARATORIntravenous (IV) infusions of alglucosidase alfa at 20 milligrams (mg)/kilogram (kg) of body weight every other week (qow) for 78 weeks.
PlaceboPLACEBO_COMPARATORIntravenous (IV) infusions of placebo every other week (qow) for 78 weeks.

Interventions

NameTypeDescription
MyozymeBIOLOGICAL20 mg/kg qow
alglucosidase alfaBIOLOGICALIV infusion of 20mg/kg; qow for 78 weeks.
PlaceboDRUGPlacebo Comparator; qow for 78 weeks.
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites1

Inclusion Criteria: * male or female aged greater than or equal to 18 years * patient's legally authorized guardian(s) must provide signed, informed consent prior to initiation of study; patient's signature required if patient understands informed consent * patient must have a documented deficit in...

Countries:FranceUnited StatesNetherlandsGermanyIsraelItalyTaiwanUnited KingdomSouth Africa
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Frequently asked questions about Myozyme

What is Myozyme used for?

Myozyme is used to treat Pompe disease, also known as glycogen storage disease type II. The listed indications cover infantile-onset Pompe disease and late-onset Pompe disease. It is developed by Sanofi and studied in patients with these forms of the condition, including those receiving respiratory support in one trial.

Who makes Myozyme?

Myozyme is developed by Sanofi, which trades under the ticker SNY. The clinical trial records for Myozyme reference Genzyme-sponsored enzyme replacement therapy studies, and Genzyme is part of Sanofi. Sanofi is the company associated with the development and sponsorship of the Myozyme trials listed.

What phase is Myozyme in?

Myozyme has been studied in Phase 2 and Phase 3 clinical trials. The listed studies include Phase 2 extension studies and a Phase 3 safety and effectiveness study. All four listed trials are completed, and none are currently active. The program covers infantile-onset and late-onset Pompe disease.

What clinical trials is Myozyme in?

Myozyme has been evaluated in completed trials including NCT00765414, an extension study in a single late-onset Pompe disease patient, NCT00763932, an extension study in Pompe disease patients previously enrolled in Genzyme enzyme replacement therapy studies, NCT00268944, a Phase 3 study in advanced late-onset Pompe disease patients receiving respiratory support, and NCT00250939, a Phase 2 study in late-onset Pompe disease.

How many patients were enrolled in Myozyme trials?

The listed Myozyme trials enrolled a total of 52 patients across four completed studies. Enrollment was small, ranging from 1 patient in the single-patient extension study NCT00765414 to 7 patients in the extension study NCT00763932. The other two studies each enrolled 5 patients.

Is Myozyme the same as rhGAA?

Yes, Myozyme is studied under the name rhGAA, which stands for recombinant human acid alpha-glucosidase, in several of its clinical trials. Trial titles for NCT00268944 and NCT00250939 refer to rhGAA in patients with late-onset Pompe disease, and these studies describe the same glycogen storage disease type II population treated with Myozyme.