2026 data ClinicalTrials.gov official source

Conditions: S

Compiled by PlainTrial · January 1, 2026

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

3,009 conditions starting with "S"

Showing 601–650 of 3,009

Condition	Trials	Recruiting
Sialorrhoea	1	-
SIBO	2	1
Sicca Syndrome	1	-
Sick Sinus Syndrome	2	-
Sickle B+ Thalassemia	3	1
Sickle Beta Thalassemia	1	-
Sickle Beta Zero Thalassemia	4	1
Sickle Cell	3	1
Sickle Cell Anemia	23	6
Sickle Cell Anemia (HbSS)	1	1
Sickle Cell Anemia (HbSS, or HbSβ-thalassemia0)	1	1
Sickle Cell Anemia in Children	3	1
Sickle Cell Cardiopulmonary Complications	1	1
Sickle Cell Crisis	1	1
Sickle Cell Disease	214	95
Sickle Cell Disease (SCD)	5	3
Sickle Cell Disease Vaso-occlusive Crisis	1	1
Sickle Cell Disease Without Crisis	1	-
Sickle Cell Disorder	1	-
Sickle Cell Disorders	1	1
Sickle Cell Hemoglobin C	3	1
Sickle Cell Life Expectancy and Risk Factors for Early Death	1	1
Sickle Cell Lung Disease and Sudden Death	1	1
Sickle Cell Organ Damage	1	1
Sickle Cell Pain	1	-
Sickle Cell Syndrome Variant	1	-
Sickle Cell Thalassemia	2	-
Sickle Cell Trait	6	4
Sickle Cell-Beta0-Thalassemia	1	-
Sickle Cells Disease	1	1
Sickle-β0-thalassemia (HbSβ0)	1	1
Sickling Disorder Due to Hemoglobin S	1	1
Side Effect	2	-
Side Effect of Drug	1	1
Side Effects	1	-
Side Effects of Creatine Monohydrate Dosing	1	-
Siderosis	1	-
SIDS	2	1
Siewert Type 1 GEJ Cancer	1	-
Siewert Type I Adenocarcinoma of Esophagogastric Junction	1	1
Siewert Type II Adenocarcinoma of Esophagogastric Junction	1	1
Sigmoid Colon Polyp	1	1
Sigmoid Diseases	1	-
Sigmoid; Lesion	1	1
Sign Language Skills	2	-
Signet Ring Adenocarcinoma of the Colon	3	-
Signet Ring Adenocarcinoma of the Rectum	2	-
Significant Bleeding Risk	1	1
Significant Memory Concern (SMC)	1	-
Signs and Symptoms	7	-

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