Glut1 Deficiency Syndrome clinical trials

The registry lists 22 studies for Glut1 Deficiency Syndrome across more than 10 countries. 2 are recruiting or about to start. 14 of them are mainly about Glut1 Deficiency Syndrome (how this is decided). Per ClinicalTrials.gov, last updated 2026-07-01.

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Status

Completed: 12
Withdrawn: 2
Terminated: 2
Recruiting: 2
Active, not recruiting: 1
No longer available: 1

Phase

Phase 2: 8
Phase 1: 3
Early Phase 1: 1
Phase 3: 1

Where

United States: 14
United Kingdom: 5
France: 4
Spain: 3
Australia: 2
Italy: 2

Who runs them

Juan Pascual (4) · Vitaflo International, Ltd (3) · Ultragenyx Pharmaceutical Inc (3) · University of Texas Southwestern Medical Center (2) · Weill Medical College of Cornell University (2) · Oregon Health and Science University (1) · Radboud University Medical Center (1) · University of British Columbia (1)

Coming up

0phase 3 studies under way

2studies finish main data collection within a year

Studies recruiting or running, from their records. “Main data collection” ends at the primary completion date, the sponsor’s own estimate, which often moves.

All 2

Nov 2026Early Check: Expanded Screening in Newborns · RTI International
Jul 2027A Phase II Study With Exploratory Outcomes of Fucose Supplementation in GLUT1 Deficiency Syndrome · Oregon Health and Science University

Who these studies take

Of the 2 Glut1 Deficiency Syndrome studies recruiting now, 1 (50%) set no upper age limit and 0 (0%) stop at 75 or younger. 1 (50%) take children under 18. 0 (0%) are for women only and 0 (0%) for men only; 1 (50%) take healthy volunteers.

Recruiting studies that take each age, of 2
Age	Women	Men
10	0 (0%)	0 (0%)
18	2 (100%)	2 (100%)
30	2 (100%)	2 (100%)
40	2 (100%)	2 (100%)
50	2 (100%)	2 (100%)
65	2 (100%)	2 (100%)
75	2 (100%)	2 (100%)
85	1 (50%)	1 (50%)

Across all 22 studies, recruiting or not: 50% stop at 75 or younger and 50% at 65; 95% take children; 0% are for women only and 0% for men only; 18% take healthy volunteers. From each study’s registry entry; the criteria on its page decide.

Studies

Recruiting first, then most recently updated. Showing 22 of 22. search them.