2026 data ClinicalTrials.gov official source

Conditions: O

Every condition beginning with O that has a registered US clinical trial, with how many studies cover each.

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829 conditions starting with "O"

Showing 601–650 of 829

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Condition Trials
Osteoporotic Vertebral Compression Fractures 1
Osteoradionecrosis 3
Osteoradionecrosis of the Jaw 1
Osteosarcoma 47
Osteosarcoma in Adolescents and Young Adults 1
Osteosarcoma in Children 4
Osteosarcoma Metastatic 2
Osteosarcoma Recurrent 5
Osteosarcoma, Extraskeletal 1
Ostomy 7
Ostomy - Ileostomy or Colostomy 1
OTC Deficiency 2
OTC Hearing Aids 1
OTCD 1
Other 2
Other Acute Leukemia 1
Other Acute Pain 1
Other Acute Postoperative Pain 1
Other and Unspecified Amputation Stump Complications 1
Other Autoimmune Diseases 1
Other Benign Neoplasm of Skin, Unspecified 1
Other Cancer 6
Other Cancers in the Thoracic Region 1
Other Cardiovascular Conditions 1
Other Chronic Illness 1
Other Clonal Myeloid Neoplasm 1
Other Complications of Bone Marrow Transplant 1
Other Conditions That May Be A Focus of Clinical Attention 1
Other Dementias 1
Other Diagnoses, Comorbidities, and Complications 1
Other Disease 1
Other Disorders of Autonomic Nervous System 1
Other Disorders of Bone Development and Growth 1
Other Disorders of Glucose Regulation and Pancreatic Internal Secretion 1
Other Disorders of Vestibular Function 1
Other Disorders of Vestibular Function, Bilateral 3
Other DLL3 Expressing epNEC 1
Other Emerging Fungi 1
Other Food Allergies 1
Other Gastrointestinal Disorders 1
Other Hematologic Conditions 1
Other IDH1-mutated Positive Hematologic Malignancies 1
Other INI1 Negative Tumors (With PI Approval) 1
Other Instability, Shoulder 1
Other Lesions of Oral Mucosa 1
Other Leukemia 1
Other Lung Disease 1
Other Metastatic Solid Tumors 1
Other Neoplasms Solid Tumors 1
Other Neuropathic Pain 1

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Data sourced from official public datasets. See our methodology for details.