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Diabetes Mellitus, Type 1 clinical trials

The registry lists 3,754 studies for Diabetes Mellitus, Type 1 across more than 10 countries. 600 are recruiting or about to start. 3,345 of them are mainly about Diabetes Mellitus, Type 1 (how this is decided). Per ClinicalTrials.gov, last updated 2026-11-13.

ClinicalTrials.gov finds 4,671 studies for Diabetes Mellitus, Type 1. How that becomes 3,751 here

This page counts the studies the registry files under Diabetes Mellitus, Type 1, and those it files under no condition that list Diabetes Mellitus, Type 1themselves. Each study its search finds is placed by how the registry filed it and by the conditions it lists. ClinicalTrials.gov counts as of Nov 8, 2026. How condition pages count

  1. 4,671Found by its condition searchIt reads the conditions a study lists and their synonyms, and also titles and keywords.
  2. −69List Diabetes Mellitus, Type 1 as a condition, but the registry did not file them under itMost often written as “Type1diabetes” (27), “Diabete Type 1” (9), and “Type1 Diabetes Mellitus” (8). The registry filed them under other conditions only, most often Diabetes Mellitus (22) and Hypoglycemia (14).
  3. −889Match it another way157 name it in the title, 5 in a keyword, and 727 by a synonym or other text the search reads.
  4. 3,713Counted here and found by its search142 of them list Diabetes Mellitus, Type 1 in their own words; the registry filed them under no condition.
  5. +38
    Counted here, but its search does not find themThe first 20 of 38.
  6. 3,751The count on this page

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Status

Completed
2,415
Recruiting
412
Status unknown
262
Terminated
205
Not yet recruiting
158
Active, not recruiting
135

Phase

Phase 2
534
Phase 1
440
Phase 3
319
Phase 4
197
Early Phase 1
57

Where

United States
1,458
Canada
318
Germany
294
France
271
United Kingdom
268
Denmark
196

Who runs them

Novo Nordisk A/S (225) · Eli Lilly and Company (74) · University of Virginia (73) · Sanofi (64) · University of Colorado, Denver (58) · Yale University (50) · Medtronic Diabetes (48) · Steno Diabetes Center Copenhagen (47)

What is being tested here

Drugs under test in Diabetes Mellitus, Type 1 studies, those with the most open studies first. Medicines only given beside them are not counted. How drugs are counted

DrugOpenPhase 3All
Semaglutide11816
Sotagliflozin6514
Verapamil528
Tirzepatide547
Insulin4851
Insulin Lispro31465
Insulin Aspart22685
Liraglutide21232
Dapagliflozin2821
Metformin2921

Drug classes tested here GLP-1 receptor agonists 19 open · SGLT2 inhibitors 9 open · Calcium channel blockers 5 open · Tyrosine kinase inhibitors (TKIs) 4 open · JAK inhibitors 3 open

Coming up

35phase 3 studies under way
243studies finish main data collection within a year11 of them phase 3

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

The 10 nearest, phase 3 first

Who these studies take

Of the 412 Diabetes Mellitus, Type 1 studies recruiting now, 128 (31%) set no upper age limit and 258 (63%) stop at 75 or younger. 185 (45%) take children under 18. 14 (3%) are for women only and 3 (1%) for men only; 64 (16%) take healthy volunteers.

Recruiting studies that take each age, of 412
AgeWomenMen
10137 (33%)137 (33%)
18339 (82%)331 (80%)
30289 (70%)281 (68%)
40278 (67%)270 (66%)
50258 (63%)251 (61%)
65227 (55%)219 (53%)
75177 (43%)169 (41%)
85146 (35%)140 (34%)

Across all 3,754 studies, recruiting or not: 67% stop at 75 or younger and 57% at 65; 40% take children; 2% are for women only and 2% for men only; 15% take healthy volunteers. From each study’s registry entry; the criteria on its page decide.

How long Diabetes Mellitus, Type 1 studies take

Of 153 phase 1 interventional studies under Diabetes Mellitus, Type 1, half reached primary completion within 12 months of starting, counting those still running.

Start to primary completionEvery sponsorIndustryNon-industry
Phase 112 mo5–32 · 153 studies7 mo4–13 · 98 studies37 mo18–64 · 55 studies
Phase 1/257 mo31–93 · 44 studies——
Phase 236 mo17–63 · 133 studies19 mo7–33 · 50 studies51 mo31–76 · 83 studies
Phase 2/323 mo12–41 · 19 studies——
Phase 318 mo10–31 · 106 studies17 mo9–25 · 78 studies—
Phase 422 mo12–38 · 74 studies—25 mo13–46 · 62 studies
Interventional, no phase18 mo9–35 · 950 studies10 mo5–18 · 105 studies19 mo10–38 · 845 studies
Observational30 mo12–69 · 299 studies22 mo12–42 · 50 studies30 mo12–78 · 249 studies

Each figure is the month by which half the studies had reached primary completion, with the range in which the middle half did. Studies still running count until their last registry update; studies that stopped early are left out. Phase 1 includes early phase 1; observational means prospective or not stated, as retrospective and cross-sectional studies date a window of data rather than a study. How these figures are worked out

What changed recently

From the registry's own updates since Oct 14, 2026.

Started recruiting5

Results posted8

Show 3 more

Stopped2

Newly registered14

Show 9 more

Studies

Recruiting first, then most recently updated. Showing 50 of 3,754. Browse all 3,754 → or search them.