Clinical Trials Involving Rare Diseases: S
- SAPHO Syndrome (4)
- SCN8A Encephalopathy (1)
- SLC35A2-CDG (2)
- STING-associated Vasculopathy With Onset in Infancy (1)
- Sacrococcygeal Teratoma (3)
- Saethre-Chotzen Syndrome (38)
- Sandhoff Disease (21)
- Sarcoma Botryoides (3)
- Scheie Syndrome (20)
- Scheuermann Disease (8)
- Schindler Disease Type 1 (1)
- Schistosomiasis (72)
- Schnitzler Syndrome (10)
- Schwannoma (111)
- Schwannomatosis (6)
- Scleredema (2)
- Scleritis (18)
- Scleromyxedema (1)
- Sclerosing Mesenteritis (1)
- Sclerosteosis (23)
- Scott Syndrome (1)
- Scurvy (12)
- Seckel Syndrome (2)
- Secondary Adrenal Insufficiency (44)
- Semantic Dementia (246)
- Senior Loken Syndrome (1)
- Septo-optic Dysplasia Spectrum (2)
- Serpiginous Choroiditis (2)
- Sertoli-leydig Cell Tumors (10)
- Severe Acute Respiratory Syndrome (584)
- Severe Combined Immunodeficiency (81)
- Severe Combined Immunodeficiency, Atypical (1)
- Severe Congenital Neutropenia (21)
- Sezary Syndrome (355)
- Shashi-Pena Syndrome (1)
- Sheldon-Hall Syndrome (2)
- Shigellosis (50)
- Short Bowel Syndrome (132)
- Shprintzen-Goldberg Craniosynostosis Syndrome (2)
- Shwachman-Diamond Syndrome (16)
- Sialadenitis (7)
- Sickle Beta Thalassemia (8)
- Sickle Cell Anemia (884)
- Sideroblastic Anemia Pyridoxine-refractory Autosomal Recessive (72)
- Siderosis (18)
- Silicosis (13)
- Single Ventricular Heart (93)
- Singleton-Merten Syndrome (1)
- Sinonasal Undifferentiated Carcinoma (2)
- Sinus Cancer (12)
- Sitosterolemia (13)
- Situs Inversus (41)
- Sixth Nerve Palsy (4)
- Sjogren-Larsson Syndrome (4)
- Small Cell Lung Cancer (1,112)
- Small Intestinal Adenocarcinoma (50)
- Small Intestine Cancer (138)
- Smallpox (76)
- Smith-Kingsmore Syndrome (1)
- Smith-Lemli-Opitz Syndrome (15)
- Smith-Magenis Syndrome (15)
- Soft Tissue Sarcoma (2,231)
- Somatostatinoma (35)
- Sotos Syndrome (2)
- Spasmodic Dysphonia (37)
- Spastic Ataxia Charlevoix-Saguenay Type (2)
- Spastic Diplegia Cerebral Palsy (38)
- Spastic Paraparesis (21)
- Spastic Paraplegia 11 (4)
- Spastic Paraplegia 47 (2)
- Spastic Paraplegia 5A (1)
- Spastic Paraplegia 7 (1)
- Specific Antibody Deficiency (2)
- Spermatogenesis Arrest (1)
- Sphingolipidosis (425)
- Spina Bifida (131)
- Spinal Muscular Atrophy (186)
- Spinal Muscular Atrophy 1 (17)
- Spinal Muscular Atrophy Type 2 (19)
- Spinal Muscular Atrophy Type 3 (23)
- Spinal Muscular Atrophy Type 4 (3)
- Spinal Muscular Atrophy With Respiratory Distress 1 (4)
- Spinal Shock (3)
- Spinocerebellar Ataxia (198)
- Spinocerebellar Ataxia 1 (15)
- Spinocerebellar Ataxia 10 (5)
- Spinocerebellar Ataxia 11 (1)
- Spinocerebellar Ataxia 12 (1)
- Spinocerebellar Ataxia 13 (1)
- Spinocerebellar Ataxia 14 (1)
- Spinocerebellar Ataxia 15 (2)
- Spinocerebellar Ataxia 17 (2)
- Spinocerebellar Ataxia 18 (1)
- Spinocerebellar Ataxia 2 (16)
- Spinocerebellar Ataxia 20 (1)
- Spinocerebellar Ataxia 21 (1)
- Spinocerebellar Ataxia 23 (3)
- Spinocerebellar Ataxia 25 (1)
- Spinocerebellar Ataxia 26 (1)
- Spinocerebellar Ataxia 27 (1)
- Spinocerebellar Ataxia 28 (1)
- Spinocerebellar Ataxia 29 (2)
- Spinocerebellar Ataxia 3 (33)
- Spinocerebellar Ataxia 30 (1)
- Spinocerebellar Ataxia 31 (1)
- Spinocerebellar Ataxia 34 (1)
- Spinocerebellar Ataxia 35 (1)
- Spinocerebellar Ataxia 36 (1)
- Spinocerebellar Ataxia 37 (1)
- Spinocerebellar Ataxia 4 (1)
- Spinocerebellar Ataxia 5 (1)
- Spinocerebellar Ataxia 7 (7)
- Spinocerebellar Ataxia 8 (3)
- Spinocerebellar Ataxia Autosomal Recessive 3 (1)
- Spinocerebellar Ataxia Autosomal Recessive 7 (2)
- Spinocerebellar Ataxia Type 6 (10)
- Spitz Nevus (1)
- Splenomegaly (42)
- Split Spinal Cord Malformation (1)
- Spondylarthropathy (760)
- Spontaneous Coronary Artery Dissection (17)
- Sporotrichosis (3)
- Spotted Fever (5)
- Staphylococcal Toxic Shock Syndrome (1)
- Stargardt Disease (41)
- Status Epilepticus (88)
- Stenotrophomonas Maltophilia Infection (3)
- Stevens-Johnson Syndrome/toxic Epidermal Necrolysis (34)
- Stickler Syndrome (4)
- Stiff Person Syndrome (8)
- Stomach Cancer (2,552)
- Storm Syndrome (6)
- Streptococcal Group A Invasive Disease (18)
- Strongyloidiasis (14)
- Sturge-Weber Syndrome (23)
- Subcorneal Pustular Dermatosis (2)
- Subcortical Band Heterotopia (1)
- Subcutaneous Panniculitis-like T-cell Lymphoma (11)
- Subependymal Giant Cell Astrocytoma (50)
- Subependymoma (45)
- Succinic Semialdehyde Dehydrogenase Deficiency (5)
- Sudden Arrhythmia Death Syndrome (1)
- Sudden Infant Death Syndrome (22)
- Sudden Sensorineural Hearing Loss (31)
- Sulfite Oxidase Deficiency (1)
- Superficial Spreading Melanoma (4)
- Superior Limbic Keratoconjunctivitis (3)
- Superior Mesenteric Artery Syndrome (2)
- Superior Semicircular Canal Dehiscence Syndrome (1)
- Supraglottic Laryngeal Cancer (2)
- Supranuclear Ocular Palsy (2)
- Supratentorial Primitive Neuroectodermal Tumor (107)
- Supravalvular Aortic Stenosis (19)
- Susac Syndrome (2)
- Sutton Disease 2 (1)
- Sydenham's Chorea (3)
- Synostoses, Tarsal, Carpal, and Digital (1)
- Synovial Sarcoma (118)
- Synovitis (86)
- Syringomyelia (12)
- Systemic Candidiasis (72)
- Systemic Capillary Leak Syndrome (5)
- Systemic Mastocytosis (44)
- Systemic Onset Juvenile Idiopathic Arthritis (53)
- Systemic Scleroderma (537)