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Undiagnosed Diseases clinical trials

The registry lists 20 studies for Undiagnosed Diseases across 6 countries. 13 are recruiting or about to start. 6 of them are mainly about Undiagnosed Diseases (how this is decided). Per ClinicalTrials.gov, last updated 2026-11-12.

Get an email when these change. Save the Undiagnosed Diseases studies recruiting or about to start — once a week, free: studies that open, close, add sites or post results.

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Example · made-up studies

Breast cancer · Recruiting: 2 came in, 3 changed

What changed in your saved searches, Oct 31 – Nov 6:

A study of drug A after surgery for early breast cancer

Came in · now Recruiting

Drug B with hormone therapy in advanced breast cancer

Changed

· Sites: 4 added, including Seoul and Busan

· Enrollment: 300 → 450 participants

Exercise during chemotherapy

Now Active, not recruiting

One email a week for all your saved searches. Stop any time.

Status

Recruiting
8
Completed
5
Enrolling by invitation
4
Not yet recruiting
1
Active, not recruiting
1
Terminated
1

Where

United States
15
United Kingdom
1
Spain
1
Canada
1
Mauritius
1
Italy
1

Who runs them

National Human Genome Research Institute (NHGRI) (6) · Mayo Clinic (3) · National Heart, Lung, and Blood Institute (NHLBI) (2) · Wayne State University (1) · University of Manchester (1) · University of Pittsburgh (1) · University of Wisconsin, Madison (1) · Baylor Research Institute (1)

Coming up

0phase 3 studies under way
4studies 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 4

Who these studies take

Of the 8 Undiagnosed Diseases studies recruiting now, 1 (13%) set no upper age limit and 0 (0%) stop at 75 or younger. 6 (75%) take children under 18. 0 (0%) are for women only and 0 (0%) for men only; 5 (63%) take healthy volunteers.

Recruiting studies that take each age, of 8
AgeWomenMen
106 (75%)6 (75%)
188 (100%)8 (100%)
308 (100%)8 (100%)
408 (100%)8 (100%)
508 (100%)8 (100%)
658 (100%)8 (100%)
758 (100%)8 (100%)
858 (100%)8 (100%)

Across all 20 studies, recruiting or not: 10% stop at 75 or younger and 5% at 65; 55% take children; 0% are for women only and 0% for men only; 50% take healthy volunteers. From each study’s registry entry; the criteria on its page decide.

Studies

Recruiting first, then most recently updated. Showing 20 of 20. search them.