ClinicalTrials.gg
RecruitingNCT07223944GALILEO-3Updated Oct 14, 2026

A Gaucher Disease Gene Therapy Trial With FLT201

A Phase 3 interventional study of FLT201 in Gaucher Disease Type 1, sponsored by Spur Therapeutics. Recruiting at 32 sites in 10 countries. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-10-14.

Sponsored by Spur Therapeutics · Phase 3, Interventional, and Treatment

From the registry’s dates

  • Started Apr 2026; still recruiting 7 months later.
Updated Oct 14, 2026Site recruiting status changed1 site removedGo to Updates ↓
Phase
Phase 3
Study type
Interventional
Enrollment
45
Allocation
Not applicable
Ages
18 Years and older
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-12

Among 92 studies in Gaucher Disease with a site in United States — 20 open to participants now, 27 under way, 2 of them phase 3. Gaucher Disease · United States.

Planned enrollment
12th of 51
45 · median 30
Started
2026
with 2 others
Phase 3
10 of 92
1 open now
Primary completion
2028-07
later than 13 of 25 live
Registered
90th of 92
by date

Among the 92 studies in Gaucher Disease with a site in United States, this one is the 12th largest by planned enrollment of the 51 interventional ones, is one of 3 that started in 2026, is one of 10 in phase 3, reaches primary completion later than 13 of the 25 other live ones, and was the 90th registered.

By phase

92 studies; the count open now beside each. This study's row is marked.

Observational39 · 16 open
Phase 114 · 2 open
Phase 211 · 1 open
Phase 3this study10 · 1 open
Phase 1/26 · 0 open
Phase 46 · 0 open
No phase2 · 0 open
Other kind2 · 0 open
Phase 2/32 · 0 open

By the year they started

First in 1988; this study’s year is marked. 3 started in 2026.

Size and results

Median enrollment 30 across the 51 interventional studies, 60 across the 39 observational. Of the 50 that completed or were terminated, 20 (40%) have results posted.

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Watch this landscapeDownload CSVWith an account: a weekly mail of what changed among 92 studies in Gaucher Disease with a site in United States, or all of them as a file.
02

Study summary

This study is a Phase 3, non-randomized, multicenter, efficacy and safety study in adult patients with Gaucher disease Type 1, on stable treatment with enzyme replacement therapy (ERT) or substrate reduction therapy (SRT) for at least 2 years. The study aims to confirm the efficacy and safety of FLT201 in this population after discontinuation of ERT/SRT.

03

Conditions studied

  • Gaucher Disease Type 1

Browse trials for

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Eligibility criteria

Key Inclusion Criteria:

  • Aged ≥18 years at time of screening.
  • Clinical diagnosis of Gaucher disease type 1
  • Stable concentration at baseline
  • Stable count at baseline
  • Receiving ERT or SRT without interruption for at least 2 years

Key Exclusion Criteria:

  • Diagnosed or suspected Gaucher disease type 2 or type 3
  • Positive for AAVS3 neutralizing antibodies.
  • Abnormal lab values, conditions or diseases that would make the participant unsuitable for the study
  • Positive pregnancy test or lactating
  • History of hematopoietic stem cell transplant ()/bone marrow transplant or any solid organ transplant.
  • History of receiving any gene therapy or cell therapy.
  • History of total splenectomy. Note: Additional protocol defined Inclusion and Exclusion criteria apply
Terms in these criteria, in plain language(3)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Hemoglobin (Hb)

The protein in red blood cells that carries oxygen. A low level is anaemia, which can cause tiredness and breathlessness. Measured in g/dL or g/L (9 g/dL is 90 g/L).

Platelets

Blood cells that help blood clot. Too few raises the risk of bleeding and bruising. A usual adult range is about 150–400 × 10⁹/L (150,000–400,000 per µL); each lab has its own reference range.

Allogeneic and autologous transplant

Stem cell (bone marrow) transplants. Allogeneic uses cells from a donor; autologous uses your own cells, collected earlier and given back.

05

Study design

Phase
Phase 3
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
45 participants (estimated)

Study arms

  • Experimental
    FLT201

    FLT201 is an advanced therapy investigational medicinal product (ATIMP) administered as a single intravenous infusion

    Genetic: FLT201

Interventions

  • GeneticFLT201

    FLT201 is a replication-incompetent single-stranded (ss) recombinant adeno-associated virus (AAV) vector. The vector is composed of a ss DNA genome packaged in an AAV-derived protein capsid.

06

What researchers measure

Primary outcomes

  1. To evaluate the efficacy of FLT201

    Proportion of participants with stable hemoglobin concentration (decrease from baseline of no more than 1.5 g/dL) at Week 52

    Time frame: 1 Year

07

Study locations

25 of 32 sites recruiting
08

Timeline

1 registry update since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Started Apr 2026 (actual). Primary completion is estimated for Jul 2028, 26 months after the start.

Of 11 phase 3 interventional studies under Gaucher Disease, half reached primary completion within 25 months of starting (the median), counting those still running; a quarter within 15 and three quarters within 57. This study's planned 26 months is close to that.

How these figures are worked out, and which studies are left out of them.

Registered
Oct 30, 2025
First posted
Nov 3, 2025
StartActual
Apr 7, 2026
Primary completionEst.
Jul 1, 2028
CompletionEst.
Oct 1, 2032
Last update
Oct 14, 2026
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
Sites
1 site removed. 4 sites changed recruiting status (4 now recruiting)
Show 4 sites
  • Hackensack University Medical Center · Hackensack, United StatesNot yet recruiting→Recruiting
  • Gazi University Medical Faculty · Ankara, Turkey (Türkiye)Not yet recruiting→Recruiting
  • Salford Royal Hospital · Salford, United KingdomNot yet recruiting→Recruiting
  • Addenbrooke's Hospital · Cambridge, United KingdomNot yet recruiting→Recruiting
Show 1 removed
  • Columbia University · New York, United States
Oct 14, 2026
Show all 1 update
  1. Oct 14, 2026
    1 site removed. 4 sites changed recruiting status (4 now recruiting)
    Show 4 sites
    • Hackensack University Medical Center · Hackensack, United StatesNot yet recruiting→Recruiting
    • Gazi University Medical Faculty · Ankara, Turkey (Türkiye)Not yet recruiting→Recruiting
    • Salford Royal Hospital · Salford, United KingdomNot yet recruiting→Recruiting
    • Addenbrooke's Hospital · Cambridge, United KingdomNot yet recruiting→Recruiting
    Show 1 removed
    • Columbia University · New York, United States

From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗

09

Registry details

Key details

Study ID
NCT07223944
Lead sponsor
Spur Therapeutics
Responsible party
Sponsor
First posted
Nov 3, 2025
Start date
Apr 7, 2026
Primary completion
Jul 1, 2028 (estimated)
Completion
Oct 1, 2032 (estimated)
Last update
Oct 14, 2026

Study contacts

Spur Clinical Trials Contact
Contact
clinicaltrials@spurtherapeutics.com
+44 (0)1438 906870

Oversight

FDA-regulated drug
Yes
FDA-regulated device
Yes
View the source record on ClinicalTrials.gov ↗

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