2026 data ClinicalTrials.gov official source

Conditions: A

Compiled by PlainTrial Editorial, Clinical Trial Intelligence Editorial Team · January 1, 2026

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

2,835 conditions starting with "A"

Showing 2,501–2,550 of 2,835

Condition	Trials	Recruiting
Asthmatic	1	-
Astigmatism	32	9
Astigmatism Bilateral	3	1
Astigmatism of Both Eyes	1	-
Astroblastoma	1	1
Astrocytoma	20	10
Astrocytoma of Brain	2	1
Astrocytoma, Cerebellar	1	1
Astrocytoma, Grade II	1	-
Astrocytoma, Grade III	5	4
Astrocytoma, Grade IV	5	4
Astrocytoma, Grades II, III and IV	1	-
Astrocytoma, IDH-Mutant	1	1
Astrocytoma, IDH-Mutant, Grade 2	3	2
Astrocytoma, IDH-Mutant, Grade 3	2	1
Astrocytoma, IDH-Mutant, Grade 4	2	1
Astrocytoma, Malignant	3	3
Astrocytoma, Oligoastrocytoma, Mixed	1	-
ASXL1 Gene Mutation	1	1
ASXL2 Gene Mutation	1	1
ASXL3 Gene Mutation	1	1
Asymmetric Hearing Loss	1	-
Asymmetrical Hearing Loss	1	-
Asymptomatic	1	-
Asymptomatic Bacteriuria	2	1
Asymptomatic Carotid Artery Stenosis	2	1
Asymptomatic Carotid Stenosis (50-69%)	1	1
Asymptomatic Condition	1	-
Asymptomatic COVID-19	1	-
Asymptomatic COVID-19 Infection Laboratory-Confirmed	1	-
Asymptomatic Left Ventricular Systolic Dysfunction (Disorder)	1	-
Asystole	1	-
At Risk for AD-dementia, With Subjective Cognitive Decline	1	1
At Risk for Cognitive Decline	1	-
At Risk for HIV	1	-
At Risk for Type 2 Diabetes Mellitus	1	1
Ataxia	5	3
Ataxia, Cerebellar	1	1
Ataxia-Telangiectasia	2	-
Ataxia-Telangiectasia (A-T)	1	-
Atelectasis	4	1
ATFL	1	1
Atheroscleroses, Coronary	1	1
Atherosclerosis	70	16
Atherosclerosis of Arteries of the Extremities, Unspecified	1	-
Atherosclerosis of Coronary Artery	1	-
Atherosclerosis of Extremities	1	1
Atherosclerosis, Coronary	1	-
Atherosclerotic Cardiovascular Disease	22	6
Atherosclerotic Cardiovascular Disease (ASCVD)	5	3

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