2026 data ClinicalTrials.gov official source

Conditions: R

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

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1,691 conditions starting with "R"

Showing 1–50 of 1,691

Sort by: Name Most Trials Recruiting
Condition Trials
r-axSpa 1
RA - Rheumatoid Arthritis 1
Rabies 3
Rabies Human 1
Racial Disparities 6
Racially/Ethnically Diverse Families From Urban Settings 1
Racism 7
Racism, Systemic 3
RAD51 Gene Mutation 1
RAD51B, RAD51C, RAD51D, or RAD54L Mutations 1
RAD51C Gene Mutation 2
RAD51D Gene Mutation 1
Radial Artery Occlusion 1
Radial Head Fracture 1
Radial Head Fractures 2
Radial Head or Neck Fractures 1
Radial Malunion 1
Radiating Pain 1
Radiation 2
Radiation Cystitis 1
Radiation Dermatitis 6
Radiation Dermatitis Acute 1
Radiation Esophagitis 2
Radiation Exposure 8
Radiation Fibrosis 2
Radiation Induced Fibrosis 1
Radiation Injuries 2
Radiation Monitoring 1
Radiation Mucositis 1
Radiation Necrosis 3
Radiation Pneumonitis 1
Radiation Protection 2
Radiation Retinopathy 3
Radiation Therapy 8
Radiation Therapy Patient 2
Radiation Therapy Recipient 1
Radiation Toxicity 14
Radiation-Induced Dermatitis 1
Radiation-Induced Lung Injury 2
Radiation-Induced Telangiectasias 1
Radiation-induced Xerostomia 2
Radiation-Induced Xerostomia and Hyposalivation 1
Radical Cystectomy 3
Radical Pelvic Surgery 1
Radical Prostatectomy 4
Radicular; Neuropathic, Lumbar, Lumbosacral 1
Radiculopathy 4
Radiculopathy Lumbar 2
Radiculopathy Multiple Sites 1
Radiculopathy Sacral 1

Download the state trial statistics CSV cited on this page: clinicaltrials-gov-us-state-statistics.csv (ClinicalTrials.gov · CC0).

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