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Active, not recruitingNCT06488261Updated Jul 22, 2025

Long Term Follow-Up for Safety of AVR-RD-02

An observational study in Gaucher Disease, sponsored by John Bernat. Active, not recruiting at 1 site in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2025-07-22.

Sponsored by John Bernat · Observational

Study type
Observational
Model
Cohort
Time perspective
Prospective
Enrollment
2
Ages
18 Years and older
Sex
All
01

Study summary

The goal of this observational study is to assess the safety and tolerability of AVR-RD-02 treatment in subjects who previously received AVR-RD-02 treatment (single dose administration).

Read the detailed description

Subjects who received AVR-RD-02 in the preceding treatment study (NCT04145037) and who meet all eligibility criteria may participate. Subjects will be asked to return for study visits annually for 14 years to assess measures of safety and persistence of AVR-RD-02 treatment.

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Conditions studied

  • Gaucher Disease

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03

In context

Gaucher Disease

171 studies on the registry are indexed under Gaucher Disease; 37 are open to participants now.

This study's enrollment of 2 is below the median of 60 across 63 observational studies indexed under Gaucher Disease.

Browse Gaucher Disease studies →

Lead sponsor

This is the only study on the registry with John Bernat as lead sponsor.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

Subjects with Gaucher disease who previously received the investigational gene therapy product AVR-RD-02

Inclusion criteria

Subjects must meet all of the following inclusion criteria for participation in this study:

  1. Subject must be willing and able to provide written informed consent for the JAB-GD-001 study in accordance with applicable regulations and guidelines and to comply with all study visits and procedures.
  2. Subject must have been enrolled in the preceding AVROBIO AVRO-RD-02-201 treatment study and have received AVR-RD-02 treatment

Exclusion criteria

Exclusion Criteria

Subject has any medical, psychological, or other condition that, in the opinion of the Investigator:

  • Might interfere with the subject's participation in the study (including consenting to procedures); and/or
  • Poses any additional risk to the subject; and/or
  • Might confound the results of any study-required assessments.
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Study design

Observational model
Cohort
Time perspective
Prospective
Enrollment
2 participants (actual)
Patient registry
No

Groups and cohorts

  • Subjects who received AVR-RD-02

    Subjects who received AVR-RD-02 in a separate parent trial

    Biological: AVR-RD-02

Interventions

  • BiologicalAVR-RD-02

    No study drug is administered in this study. Subjects who received AVR-RD-02 in a separate parent trial will be evaluated in this trial for long-term safety.

06

What researchers measure

Primary outcomes

  1. Incidence of newly diagnosed malignancy, hematologic disorder, and/or autoimmune or rheumatologic disorder

    Time frame: Baseline to Year 14

  2. Change from baseline over time in hemoglobin concentration

    Time frame: Baseline to Year 14

  3. Change from baseline over time in platelet count

    Time frame: Baseline to Year 14

Secondary outcomes

  1. Change from baseline over time in glucocerebrosidase (GCase) enzyme activity in whole blood

    Time frame: Baseline to Year 14

  2. Average vector copy number (VCN) from whole blood using quantitative polymerase chain reaction (qPCR) analysis

    Time frame: Baseline to Year 14

  3. Change from baseline over time in anti-GCase total antibodies and subsequent titers

    Time frame: Baseline to Year 14

  4. Identification of potential aberrant clonal expansion(s) assessed by performing insertional site analysis (ISA) from whole blood

    Time frame: Baseline to Year 14

  5. Presence of replication competent lentivirus (RCL)

    Time frame: Baseline to Year 14

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Study locations

1 site
  • University of Iowa Hospitals and Clinics
    Iowa City, Iowa 52242, United States
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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jul 22, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT06488261
Lead sponsor
John Bernat
Responsible party
John Bernat (Clinical Associate Professor, University of Iowa) — Sponsor-investigator
First posted
Jul 5, 2024
Start date
Feb 21, 2024
Primary completion
Jun 2037 (estimated)
Completion
Oct 2037 (estimated)
Last update
Jul 22, 2025

Study contacts

John A. Bernat, MD, PhD
principal investigator · University of Iowa

Oversight

Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is active, not recruiting, as verified in Jul 2025. You cannot join it, but the record below documents what was studied.

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Discussion

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