2026 data ClinicalTrials.gov official source

Conditions: L

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

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

1,243 conditions starting with "L"

Showing 201–250 of 1,243

Condition	Trials	Recruiting
Learning Curve	1	1
Learning Disabilities	1	1
Learning Disability	1	-
Learning Disabled	1	1
Learning Quality	1	1
Learning; Lack of (Specific)	1	-
Leber Congenital Amaurosis	7	2
Leber Congenital Amaurosis 10	3	1
Leber Hereditary Optic Neuropathy	3	2
Leber Hereditary Optic Neuropathy (LHON)	1	-
Leber's Hereditary Optic Neuropathy	1	-
Lebers Hereditory Optic Neuropathy With Extra Ocular Symptoms (LHON-Plus)	1	1
Ledderhose Disease	1	-
Left Atrial Appendage Closure	3	2
Left Atrial Appendage Exclusion	1	-
Left Atrial Appendage Ligation	1	-
Left Atrial Appendage Occlusion	1	-
Left Atrial Appendage Thrombosis	1	1
Left Atrial Dilatation	1	1
Left Branch Bundle Block	1	1
Left Bundle-Branch Block	3	2
Left Heart Disease	1	1
Left Sided Breast Cancer	1	-
Left Ventricle Dilated	1	1
Left Ventricle Remodeling	1	1
Left Ventricular Diastolic Dysfunction	2	1
Left Ventricular Dysfunction	8	3
Left Ventricular Ejection Fraction	1	-
Left Ventricular Fibrosis	1	1
Left Ventricular Function Systolic Dysfunction	2	-
Left Ventricular Hypertrophy	8	7
Left Ventricular Non-compaction Cardiomyopathy	1	1
Left Ventricular Systolic Dysfunction	3	3
Left-sided Colon Resection	1	1
Left-Sided Heart Failure	2	-
Leg Edema	1	1
Leg Injury	2	2
Leg Pain	2	1
Leg Pain and/or Back Pain	1	1
Leg Ulcer	9	5
Leg Ulcers	4	1
Leg Ulcers Venous	1	1
Legal Intervention	1	1
Legally Induced Abortion Without Mention of Complication	1	-
Legg-Calvâe-Perthes Disease	1	-
Legg-Calvé-Perthes Disease	1	1
Legionnaires' Disease	1	-
Legislation	1	1
Legius Syndrome	3	3
Leigh Disease	2	2

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