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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2,809 conditions starting with "A"

Showing 2,601–2,650 of 2,809

Sort by: Name Most Trials Recruiting
Condition Trials
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 2
Attention Deficit Hyperactivity Disorder 103
Attention Deficit Hyperactivity Disorder (ADHD) 19
Attention Deficit Hyperactivity Disorder Combined 1
Attention Deficit Hyperactivity Disorder Symptoms 1
Attention Deficit Hyperactivity Disorders 1
Attention Difficulties 3
Attention Disturbances 1
Attention Impaired 1
Attention-deficit 3
Attention-Deficit/Hyperactivity Disorder (Combined-subtype) 1
Attentional Bias 2
Attenuated Familial Adenomatous Polyposis 1
Attenuated Psychosis Syndrome 1
Attitude 2
Attitude of Health Personnel 1
Attitude to Health 2
Attitudes 4
ATTR 1
ATTR Amyloidosis 3
ATTR Amyloidosis Wild Type 1
ATTR Gene Mutation 1
ATTR-CM 2
ATTR-CM (Transthyretin Amyloid Cardiomyopathy) 1
ATTR-Mixed 1
ATTRv-PN 1
ATTRV122I Amyloidosis 1
Atypical Alzheimer's Disease 2
Atypical Anorexia Nervosa 3
Atypical Bulimia Nervosa 1
Atypical Choroid Plexus Papilloma 1
Atypical Chronic Myeloid Leukemia 5
Atypical Chronic Myeloid Leukemia, BCR-ABL Negative 1
Atypical Chronic Myeloid Leukemia, BCR-ABL1 Negative 2
Atypical Chronic Myeloid Leukemia, Breakpoint Cluster Region-abl Translocation (BCR-ABL) Negative 1
Atypical Ductal Breast Hyperplasia 1
Atypical Ductal Hyperplasia 2

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