2026 data ClinicalTrials.gov official source

Conditions: A

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

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2,835 conditions starting with "A"

Showing 2,601–2,650 of 2,835

Sort by: Name Most Trials Recruiting
Condition Trials
Atrial Flutter 25
Atrial Flutter Typical 1
Atrial Flutter With Rapid Ventricular Response 1
Atrial Functional Mitral Regurgitation 1
Atrial Septal Defect 1
Atrial Tachycardia 4
Atrio-Esophageal Fistula 1
Atrioventricular Block 3
Atrioventricular Septal Defects (AVSD) 1
Atrium; Fibrillation 1
Atrophic Acne Scar 1
Atrophic Endometrium 1
Atrophic Gastritis 1
Atrophic Vaginitis 2
Atrophy 6
Atrophy of Muscle Due to Disuse 1
Atrophy, Geographic 2
Atrophy; Larynx 1
Atropine 1
ATRT Recurrent 1
Attachment 1
Attachment Disorder 1
Attachment Loss, Periodontal 1
Attendance at Treatment 1
Attention 14
Attention - no Condition is Being Assessed - Healthy Adults 1
Attention Concentration Difficulty 3
Attention Deficit and Disruptive Behavior Disorder 1
Attention Deficit and Disruptive Behavior Disorders 2
Attention Deficit Disorder 5
Attention Deficit Disorder With Hyperactivity 21
Attention Deficit Disorder With Hyperactivity (ADHD) 3
Attention Deficit Disorders With Hyperactivity 1
Attention Deficit Hyerpactivity Disorder 1
Attention Deficit Hyper Activity 1
Attention Deficit Hyperactivity Disorder 89
Attention Deficit Hyperactivity Disorder (ADHD) 16
Attention Deficit Hyperactivity Disorder Combined 1
Attention Deficit Hyperactivity Disorder Symptoms 1
Attention Deficit Hyperactivity Disorders 1
Attention Deficit/Hyperactivity Disorder 14
Attention Deficit/Hyperactivity Disorder (ADHD) 3
Attention Difficulties 3
Attention Disturbances 1
Attention Impaired 1
Attention-deficit 3
Attention-deficit Hyperactivity 1
Attention-Deficit/Hyperactivity Disorder (Combined-subtype) 1
Attentional Bias 2
Attenuated Familial Adenomatous Polyposis 1

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