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 51–100 of 1,243

Condition	Trials	Recruiting
Lactose Intolerance	1	-
Lactose Intolerance, Adult Type	1	1
LAD-1	1	1
Lafora Disease	1	1
LAL-Deficiency	1	1
Lalonde Protocol	1	1
LAM	1	-
LAMA2-MD \(Merosin Deficient Congenital Muscular Dystrophy, MDC1A\)	1	1
Lambert-eaton Myasthenic Syndrome	3	1
Lamellar Ichthyosis	2	-
Laminectomy	1	1
Langerhans Cell Histiocytosis	9	5
Langerhans Cell Histiocytosis (LCH)	2	1
Language	7	6
Language Acquisition	1	-
Language Delay	2	2
Language Development	14	5
Language Development Disorders	3	2
Language Developmental Disorders	1	-
Language Discordance	1	-
Language Disorder	1	-
Language Disorder, Acquired	1	-
Language Disorders	8	5
Language Disorders in Children	4	-
Language Environments of Children of Low-socioeconomic Status	1	-
Language Impairment	2	2
Language, Child	1	1
Laparoscopic Cholecystectomy	5	1
Laparoscopic Colonic Resection	1	-
Laparoscopic Gastric Bypass Surgery	1	-
Laparoscopic Gynecologic Surgery	1	-
Laparoscopic Hysterectomy	2	1
Laparoscopic Myomectomy	1	-
Laparoscopic Radical Cystectomy	1	-
Laparoscopic Salpingectomy	1	-
Laparoscopic Sleeve Gastrectomy	3	2
Laparoscopic Sleeve Gastrectomy (LSG)	1	-
Laparoscopic Surgery	3	2
Laparoscopic/Minimally Invasive Colorectal Surgery	1	-
Laparotomy	2	1
Large B-cell Lymphoma	29	20
Large B-Cell Lymphoma (LBCL)	1	1
Large B-Cell Lymphoma With IRF4 Rearrangement	2	1
Large Cell Carcinoma	1	-
Large Cell Lung Cancer	2	-
Large Cell Lymphoma, Diffuse	1	1
Large Cell Neuroendocrine (NE) Tumors	1	1
Large Cell Neuroendocrine Cancer (LCNEC)	1	1
Large Cell Neuroendocrine Carcinoma	3	1
Large Cell Neuroendocrine Carcinoma of the Lung	5	4

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