A Study of VPRIV in Participants With Gaucher Disease Previously Treated With Other Enzyme Replacement Therapies or Substrate Reduction Therapies

Study Overview
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Brief Summary
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The main aim of this study is to describe the safety profile of velaglucerase alfa (VPRIV) in participants with Gaucher disease type 1. Participants will be transitioning from other enzyme replacement therapies or substrate reduction therapies to VPRIV. Some participants may have already transitioned to treatment with VPRIV before this study started. In this study, data on VPRIV will be collected from the medical records of participants who already transitioned to VPRIV before this study started. Other participants will join this study when they transition to VPRIV. All participants will be followed to allow for 12 months of observation from time of transition to VPRIV. The study sponsor will not be involved in how participants are treated but will provide instructions on how the clinics will record what happens during the study.

Official Title
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VPRIV® Non-Interventional Study in Patients Previously Treated With Other Enzyme Replacement Therapies (ERTs)/Substrate Reduction Therapies (SRTs)

Conditions
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Gaucher Disease

Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Participant with GD1 currently being treated with an ERT/SRT other than VPRIV for at least 6 months before baseline enrolment; or participant previously treated with another ERT/ SRT for at least 6 months prior to transitioning to VPRIV.. Participant or legally authorized representative has provided written informed consent. Exclusion Criteria: In the opinion of the investigator, participant is at high risk of non-compliance. In the opinion of the investigator, participant is unsuitable in any other way to participate in this study. Participant is pregnant.
Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| VPRIV Participants<br>Participants who has been transitioned from ERTs/SRTs to VPRIV, the data will be collected retrospectively from time of transition until the point at which participant begins in this study and then will be followed up prospectively for 12 months. | |

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Number of Participants with Adverse Events (AEs) Following the Transition From Other ERTs/SRTs to VPRIV | An AE is any untoward medical occurrence in a clinical investigation participant administered a pharmaceutical product and that does not necessarily have a causal relationship with this treatment. Number of participants transitioning from other ERTs/SRTs to VPRIV with AEs will be reported. | Baseline up to 12 months | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Change From Baseline in Use of Glucosylspingosine (Lyso-Gb1) Biomarker | Change in use of Lyso-Gb1 by participants following the transition from other ERTs/SRTs to velaglucerase alfa (VPRIV) will be assessed. | Baseline, Month 12 | 
| Change From Baseline in Gaucher Disease Questionnaire Patient Reported Outcomes (PRO) Score at Month 12 | Gaucher disease questionnaire (PRO) scores will be calculated for each adult participant. The questionnaire asks how much the participant is affected by the Gaucher disease. A total summated score is calculated and ranges from 0 to 100 with higher scores indicating more severe impairment and worse quality of life. | Baseline, Month 12 |