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 2,551–2,600 of 2,809

Condition	Trials	Recruiting
Atopic Dermatitis Eczema	9	2
Atopic Dermatitis of Scalp	1	-
Atopic Dermatitis, Unspecified	1	1
Atopic Eczema	2	-
Atopic Hand and Foot Dermatitis	1	-
Atopic Hand Eczema	1	-
Atopic Hypersensitivity	1	-
Atopic Keratoconjunctivitis	1	1
Atoptic Dermatitis	1	1
Atopy	5	2
ATP-Binding Cassette Subfamily C Member 6 Deficiency	2	2
Atrial Arrhythmia	5	2
Atrial Enlargement	1	1
Atrial Fibrillation	204	60
Atrial Fibrillation (AF)	18	12
Atrial Fibrillation - Symptomatic	1	1
Atrial Fibrillation Ablation	1	-
Atrial Fibrillation and Flutter	1	-
Atrial Fibrillation Chronic	1	-
Atrial Fibrillation in High Risk Patients	1	-
Atrial Fibrillation New Onset	4	1
Atrial Fibrillation or Atrial Flutter	1	-
Atrial Fibrillation Paroxysmal	5	3
Atrial Fibrillation Rapid	3	1
Atrial Fibrillation Recurrent	1	-
Atrial Fibrillation, Bradycardia	1	-
Atrial Fibrillation, Paroxysmal or Persistent	1	-
Atrial Fibrillation, Persistent	4	1
Atrial Fibrillation, Postoperative	2	2
Atrial Flutter	25	4
Atrial Flutter Typical	1	1
Atrial Flutter With Rapid Ventricular Response	1	1
Atrial Functional Mitral Regurgitation	1	1
Atrial Septal Defect	1	-
Atrial Tachycardia	4	2
Atrio-Esophageal Fistula	1	-
Atrioventricular Block	3	-
Atrioventricular Septal Defects (AVSD)	1	-
Atrium; Fibrillation	1	-
Atrophic Acne Scar	1	-
Atrophic Endometrium	1	1
Atrophic Gastritis	1	1
Atrophic Vaginitis	2	2
Atrophy	6	1
Atrophy of Muscle Due to Disuse	1	1
Atrophy, Geographic	2	-
Atrophy; Larynx	1	-
Atropine	1	-
ATRT Recurrent	1	1
Attachment	1	-

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