2026 data ClinicalTrials.gov official source

Conditions: A

Compiled by PlainTrial · January 1, 2026

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

2,809 conditions starting with "A"

Showing 2,651–2,700 of 2,809

Condition	Trials	Recruiting
Atypical Endometrial Hyperplasia	5	1
Atypical Fibroxanthoma	2	1
Atypical Hemolytic Uremic Syndrome (aHUS)	1	1
Atypical Hemolytic-Uremic Syndrome	4	1
Atypical Hyperplasia of the Breast	1	-
Atypical Lobular Hyperplasia	1	-
Atypical Meningioma	1	1
Atypical Neurofibroma	3	1
Atypical Neurofibromatosis	1	-
Atypical Nevus	1	-
Atypical Parkinson Disease	2	1
Atypical Parkinsonism	2	-
Atypical Teratoid/Rhabdoid Tumor	10	4
Atypical Teratoid/Rhabdoid Tumor (ATRT) of the CNS	1	1
Atypical Teratoid/Rhabdoid Tumor of CNS	1	1
Audio Computer Assisted Self-administered Questionnaire	1	-
Audio Visual Hallucinations	1	-
Auditory Diseases, Central	1	1
Auditory Hallucination	1	1
Auditory Over Responsivity	1	1
Auditory Perception; Abnormal	1	1
Auditory Perceptual Disorders	1	-
Auditory Perceptual Impairment	1	1
Auditory Processing Disorder	1	1
Augmented Renal Clearance (ARC)	1	1
Auricular Stimulation	1	1
Auriculotherapy	1	1
Autism	105	49
Autism Disorder	3	1
Autism in Children	1	1
Autism or Autistic Traits	3	2
Autism Sibling	2	1
Autism Spectrum Disorder	225	112
Autism Spectrum Disorder (ASD)	17	11
Autism Spectrum Disorder High-Functioning	1	1
Autism Spectrum Disorder With Impaired Functional Language	1	-
Autism Spectrum Disorders	21	1
Autistic Behavior	1	-
Autistic Disorder	28	5
Autistic Disorders Spectrum	2	1
Autistic Spectrum Disorder	2	-
Autistic Spectrum Disorder (ASD)	1	-
Autistic Spectrum Disorders	2	-
Auto-Brewery Syndrome	1	1
Autoantibody Positive	1	-
Autobiographical Memory	1	1
Autogenous Bone Graft	1	-
Autografts	1	-
Autoimmune	2	1
Autoimmune Blistering Disease	1	-

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