2026 data ClinicalTrials.gov official source

Conditions: D

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

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

1,173 conditions starting with "D"

Showing 151–200 of 1,173

Condition	Trials	Recruiting
Deleterious BARD1 Gene Mutation	1	-
Deleterious BRCA1 Gene Mutation	4	-
Deleterious BRCA2 Gene Mutation	4	-
Deleterious BRIP1 Gene Mutation	1	-
Deleterious EPCAM Gene Mutation	1	-
Deleterious Familial Adenomatous Polyposis	1	-
Deleterious MLH1 Gene Mutation	1	-
Deleterious MSH2 Gene Mutation	1	-
Deleterious MSH6 Gene Mutation	1	-
Deleterious PALB2 Gene Mutation	2	-
Deleterious PMS2 Gene Mutation	1	-
Deletion and Duplication of Mitochondrial DNA	1	1
Deliberate Self-Harm	1	-
Delinquency	6	-
Delirium	63	24
Delirium Confusional State	2	2
Delirium in Old Age	5	3
Delirium of Mixed Origin	1	1
Delirium on Emergence	1	1
Delirium Superimposed on Dementia	2	1
Delirium Treatment	1	1
Delirium With Dementia	1	1
Delirium, Post-Operative	1	-
Delirium, Postoperative	1	1
Delirium, Sepsis Associated	2	1
Delivery Complication	1	1
Delivery of Health Care	1	1
Delivery of Small for Gestational Age (SGA) Baby	1	-
Delivery Problem	1	1
Delivery Room Resuscitation	2	2
Delivery Systems	4	-
Delivery, Obstetric	4	1
Delivery; Proteinuria, With Gestational Hypertension (Pre-eclampsia, Severe)	1	-
Delusional Disorder	2	1
Delusional Disorder (Late Onset)	1	1
Dementia	202	79
Dementia Alzheimer Type	9	6
Dementia Alzheimer's Type	1	-
Dementia Alzheimers	12	3
Dementia Associated With Cerebrovascular Disease	1	1
Dementia Caregiver	2	2
Dementia Caregivers	1	-
Dementia Family Caregivers	1	-
Dementia Frontal	2	1
Dementia of Alzheimer Type	11	5
Dementia of Alzheimer's Type	1	-
Dementia of the Alzheimer's Type	1	-
Dementia or a Related Disorder	1	-
Dementia Prevention	2	1
Dementia Severe	3	2

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