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Study identifier: NCT02450851 Synced from ClinicalTrials.gov · July 28, 2026
● Recruiting

Clinical and Genetic Evaluation of Individuals With Undiagnosed Disorders Through the Undiagnosed Diseases Network

Condition: Genetic Disease  ·  Sponsor: National Human Genome Research Institute (NHGRI)

PhaseN/A
Planned participants20000
Who can joinAll sexes, 1 Month to 100 Years
Healthy volunteersYes

About this study

Without an explanation for severe and sometimes life-threatening symptoms, patients and their families are left in a state of unknown. Many individuals find themselves being passed from physician to physician, undergoing countless and often repetitive tests in the hopes of finding answers and insight about what the future may hold. This long and arduous journey to find a diagnosis does not end for many patients- the Office of Rare Diseases Research (ORDR) notes that 6% of individuals seeking their assistance have an undiagnosed disorder. In 2008, the National Institutes of Health (NIH) Undiagnosed Diseases Program (UDP) was established with the goal of providing care and answers for these individuals with mysterious conditions who have long eluded diagnosis. The NIH UDP is a joint venture of the NIH ORDR, the National Human Genome Research Institute Intramural Research Program (NHGRI-IRP), and the NIH Clinical Research Center (CRC) (1-3). The goals of the NIH UDP are to: (1) provide answers for patients with undiagnosed diseases; (2) generate new knowledge about disease mechanisms; (3) assess the application of new approaches to phenotyping and the use of genomic technologies; and (4) identify potential therapeutic targets, if possible. To date, the UDP has evaluated 3300 medical records and admitted 750 individuals with rare and undiagnosed conditions to the NIH Clinical Center. The NIH UDP has identified more than 70 rare disease diagnoses and several new conditions. The su…

This description comes directly from the study's public registry record.

Talk to the study team

Paul Mazur  ·  (844) 746-4836  ·  udn@hms.harvard.edu

Always discuss trial participation with your own doctor first.

Locations (33)

University of Alabama at BirminghamBirmingham, Alabama, United StatesRecruiting
HudsonAlpha Institute for Biotechnology, Inc.Huntsville, Alabama, United StatesCompleted
University of California, Los AngelesLos Angeles, California, United StatesRecruiting
University of California, Irvine Medical CenterOrange, California, United StatesRecruiting
Lucile Salter Packard Children's Hospital at StanfordStanford, California, United StatesCompleted
Stanford UniversityStanford, California, United StatesRecruiting
Leland Stanford Junior UniversityStanford, California, United StatesRecruiting
Stanford Hospital and ClinicsStanford, California, United StatesRecruiting
Childrens National Medical CenterWashington D.C., District of Columbia, United StatesRecruiting
University of Miami Miller School of MedicineMiami, Florida, United StatesRecruiting
Lurie Children s HospitalChicago, Illinois, United StatesNot Yet Recruiting
Indiana UniversityIndianapolis, Indiana, United StatesRecruiting

+ 21 more locations — full list on the registry record.

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Source record: clinicaltrials.gov/study/NCT02450851