2026 data ClinicalTrials.gov official source

Conditions: N

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

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

1,046 conditions starting with "N"

Showing 601–650 of 1,046

Condition	Trials	Recruiting
Nightmares	4	3
Nightmares Associated With Chronic Post-Traumatic Stress Disorder	1	-
Nightmares Associated With Trauma and Stress	1	1
Nightmares, REM-Sleep Type	1	-
Nightshift Work	1	1
Nipah Virus Infection	1	-
Nipple Graft Loss	1	1
Nipple Necrosis	1	1
Nipple Sparing Mastectomy	1	-
NIRS	1	1
Nitrate Supplementation	1	1
Nitrates	1	-
Nitric Oxide	4	3
Nitrous Oxide	1	-
Nivolumab	1	1
NK-Cell Leukemia	2	1
NK-Cell Lymphoma	2	2
NK-Cell Lymphomas	1	1
NK/T-Cell Lymphoma of Nasal Cavity (Diagnosis)	1	-
NK/T-Cell Lymphoma of Nasopharynx (Diagnosis)	1	-
NLRC4-GOF, AIFEC (Autoinflammation With Infantile Enterocolitis), XIAP Deficiency, CDC42 Mutations	1	-
NLRC4-MAS	1	1
NMDAR Autoimmune Encephalitis	1	1
NMIBC	3	1
NMO Spectrum Disorder	1	1
NMOSD	3	3
No Abdominal Aortic Aneurysm (Non-AAA)	1	-
No Applicable Condition; Study of Physiologic Monitor Alarms	1	1
No Condition	3	3
No Condition is the Focus of the Study	1	-
No Disease	1	1
No Disease or Condition is Being Studied	3	2
No Evidence of Disease	2	-
no Interaction VRET	1	1
No Medicaid Coverage	1	1
No Message Exposure (Control Condition)	1	1
No Restrictions on Diagnosis	1	1
No Specific Condition	1	-
No Specific Conditions	1	1
No Specific Medical Conditions or Disease States	1	1
Nociceptive Pain	4	1
Nocturia	10	5
Nocturnal Blood Pressure	1	1
Nocturnal Enuresis	3	1
Nocturnal Hypoglycemia	2	-
Nodal Marginal Zone B-cell Lymphoma	12	-
Nodal Marginal Zone Lymphoma	3	3
Nodal Peripheral T-Cell Lymphoma With TFH Phenotype	2	1
Node Negative Breast Cancer	2	1
Node-positive Breast Cancer	5	3

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