Clinical Trials Involving Rare Diseases: C
- CADASIL (16)
- CANDLE Syndrome (5)
- CD4 Deficiency (2)
- CDKL5 Deficiency Disorder (46)
- CHARGE Syndrome (1)
- CHD2 Myoclonic Encephalopathy (1)
- CHILD Syndrome (5)
- CLIPPERS (2)
- CLOVES Syndrome (2)
- Calciphylaxis (12)
- Camurati-Engelmann Disease (88)
- Canavan Disease (7)
- Candida Glabrata (2)
- Carbamoyl Phosphate Synthetase 1 Deficiency (6)
- Carcinoid Syndrome (63)
- Carcinoid Tumor (202)
- Cardiac Rupture (3)
- Cardiofaciocutaneous Syndrome (1)
- Cardiomyopathy Due to Anthracyclines (2)
- Cardiospasm (93)
- Carney Complex (4)
- Carnitine Palmitoyltransferase 2 Deficiency (5)
- Caroli Disease (3)
- Carotid Body Tumor (95)
- Carpenter Syndrome (2)
- Cartilage-hair Hypoplasia (2)
- Castleman Disease (28)
- Cat Scratch Disease (2)
- Catastrophic Antiphospholipid Syndrome (2)
- Catecholaminergic Polymorphic Ventricular Tachycardia (7)
- Cauda Equina Syndrome (4)
- Central Centrifugal Cicatricial Alopecia (7)
- Central Congenital Hypothyroidism (1)
- Central Core Disease (2)
- Central Diabetes Insipidus (6)
- Central Nervous System Germinoma (19)
- Central Neurocytoma (2)
- Central Pain Syndrome (5)
- Central Serous Chorioretinopathy (64)
- Centronuclear Myopathy (12)
- Cerebellar Astrocytoma, Childhood (95)
- Cerebellar Ataxia Ectodermal Dysplasia (1)
- Cerebellar Ataxia and Hypogonadotropic Hypogonadism (1)
- Cerebellar Degeneration (4)
- Cerebellar Hypoplasia (1)
- Cerebellar Liponeurocytoma (1)
- Cerebral Astrocytoma, Childhood (91)
- Cerebral Palsy Ataxic (2)
- Cerebral Palsy Athetoid (2)
- Cerebral Palsy Spastic Hemiplegic (12)
- Cerebrospinal Fluid Leak (41)
- Cerebrotendinous Xanthomatosis (9)
- Cervical Dystonia (92)
- Cervical Intraepithelial Neoplasia (333)
- Chanarin-Dorfman Syndrome (7)
- Chandler's Syndrome (20)
- Chaotic Atrial Tachycardia (2)
- Charcot-Marie-Tooth Disease (376)
- Charcot-Marie-Tooth Disease Type 1 (11)
- Charcot-Marie-Tooth Disease Type 1A (16)
- Charcot-Marie-Tooth Disease Type 1B (2)
- Charcot-Marie-Tooth Disease Type 2 (1)
- Charcot-Marie-Tooth Disease Type 2A (2)
- Charles Bonnet Syndrome (1)
- Chediak-Higashi Syndrome (13)
- Cherubism (2)
- Chiari Malformation Type 2 (54)
- Chikungunya (48)
- Childhood Acute Lymphoblastic Leukemia (510)
- Childhood Apraxia of Speech (4)
- Childhood Brain Stem Glioma (103)
- Childhood Disintegrative Disorder (2)
- Childhood Hepatocellular Carcinoma (13)
- Childhood Hypophosphatasia (1)
- Childhood Supratentorial Embryonal Tumor, Not Otherwise Specified (88)
- Childhood-Onset Schizophrenia (7)
- Children's Interstitial Lung Disease (2)
- Cholecystitis (146)
- Cholera (69)
- Cholesteatoma (14)
- Cholesteryl Ester Storage Disease (29)
- Chondroblastoma (1)
- Chondrodysplasia Punctata Syndrome (2)
- Chondroma (2)
- Chondrosarcoma (93)
- Chordoid Glioma of the Third Ventricle (2)
- Chordoma (53)
- Chorea-acanthocytosis (1)
- Choriocarcinoma (65)
- Chorioretinitis (8)
- Choroid Plexus Carcinoma (10)
- Choroideremia (21)
- Choroiditis (38)
- Chromophil Renal Cell Carcinoma (41)
- Chromophobe Renal Cell Carcinoma (10)
- Chromosomal Triplication (69)
- Chromosome 15q Duplication (3)
- Chromosome 17p Deletion (19)
- Chromosome 1p36 Deletion Syndrome (2)
- Chromosome 1q21.1 Duplication Syndrome (1)
- Chromosome 3q29 Microduplication Syndrome (1)
- Chromosome 5q Deletion (11)
- Chromosome 7q Duplication (1)
- Chronic Active Epstein-Barr Virus Infection (3)
- Chronic Eosinophilic Pneumonia (1)
- Chronic Erosive Gastritis (1)
- Chronic Graft Versus Host Disease (186)
- Chronic Granulomatous Disease (66)
- Chronic Inflammatory Demyelinating Polyneuropathy (56)
- Chronic Intestinal Pseudoobstruction (5)
- Chronic Lymphocytic Leukemia (1,785)
- Chronic Myeloid Leukemia (1,198)
- Chronic Myelomonocytic Leukemia (515)
- Chronic Myeloproliferative Disorders (1,722)
- Chronic Neutrophilic Leukemia (110)
- Chronic Progressive External Ophthalmoplegia (3)
- Chronic Recurrent Multifocal Osteomyelitis (3)
- Chronic Thromboembolic Pulmonary Hypertension (84)
- Chylothorax, Congenital (1)
- Ciguatera Fish Poisoning (1)
- Citrullinemia Type I (1)
- Classic Galactosemia (8)
- Clear Cell Renal Cell Carcinoma (1,174)
- Cloacal Exstrophy (1)
- Coal Worker's Pneumoconiosis (33)
- Coats Disease (8)
- Cocaine Antenatal Exposure (2)
- Coccidioidomycosis (70)
- Coccygodynia (3)
- Cockayne Syndrome (7)
- Coffin-Lowry Syndrome (1)
- Cogan's Syndrome (5)
- Cohen Syndrome (1)
- Cold Agglutinin Disease (10)
- Cold Urticaria (12)
- Collecting Duct Carcinoma (9)
- Coloboma of Optic Nerve (2)
- Common Variable Immunodeficiency (47)
- Compartment Syndrome (82)
- Complement Component 5 Deficiency (1)
- Complement Component Deficiency (1)
- Complete Androgen Insensitivity Syndrome (1)
- Complete Atrioventricular Canal (4)
- Complex Regional Pain Syndrome (125)
- Cone Dystrophy (25)
- Cone-rod Dystrophy (15)
- Cone-rod Dystrophy 2 (13)
- Congenital Adrenal Hyperplasia (120)
- Congenital Amegakaryocytic Thrombocytopenia (8)
- Congenital Amputation (2)
- Congenital Aplastic Anemia (90)
- Congenital Central Hypoventilation Syndrome (9)
- Congenital Contractural Arachnodactyly (1)
- Congenital Cytomegalovirus (36)
- Congenital Diaphragmatic Hernia (62)
- Congenital Disorders of Glycosylation (8)
- Congenital Dyserythropoietic Anemia (4)
- Congenital Dyserythropoietic Anemia Type 1 (2)
- Congenital Erythropoietic Porphyria (47)
- Congenital Fiber Type Disproportion (2)
- Congenital Fibrosis of Extraocular Muscles (1)
- Congenital Generalized Lipodystrophy (10)
- Congenital Heart Block (6)
- Congenital Hemolytic Anemia (3)
- Congenital Hepatic Fibrosis (3)
- Congenital Herpes Simplex (6)
- Congenital Human Immunodeficiency Virus (1)
- Congenital Hyperinsulinism (40)
- Congenital Hypopituitarism (1)
- Congenital Hypothyroidism (11)
- Congenital Insensitivity to Pain (1)
- Congenital Lymphedema (10)
- Congenital Mesoblastic Nephroma (7)
- Congenital Mirror Movement Disorder (3)
- Congenital Muscular Dystrophy (13)
- Congenital Muscular Dystrophy Due to Dystroglycanopathy (3)
- Congenital Muscular Dystrophy Type 1A (5)
- Congenital Myasthenic Syndromes (11)
- Congenital Myotonic Dystrophy (4)
- Congenital Pseudoarthrosis (4)
- Congenital Rubella (2)
- Congenital Sucrase-isomaltase Deficiency (2)
- Congenital Thrombotic Thrombocytopenic Purpura (6)
- Congenital Torticollis (10)
- Congenital Tracheal Stenosis (1)
- Congenital Vertical Talus (1)
- Congenital Zika Syndrome (1)
- Conotruncal Heart Malformations (3)
- Continuous Spike-wave During Slow Sleep Syndrome (5)
- Conversion Disorder (130)
- Corneal Endothelial Dystrophy Type 2 (7)
- Cornelia De Lange Syndrome (4)
- Coronary Artery Aneurysm (16)
- Corpus Callosum Agenesis (13)
- Corticobasal Degeneration (28)
- Costello Syndrome (2)
- Cowden Syndrome (7)
- Cramp-fasciculation Syndrome (1)
- Cranioectodermal Dysplasia (1)
- Craniofacial Microsomia (8)
- Craniofrontonasal Dysplasia (1)
- Craniopharyngioma (103)
- Craniosynostosis (49)
- Creutzfeldt-Jakob Disease (5)
- Cri Du Chat Syndrome (2)
- Crigler Najjar Syndrome, Type 1 (12)
- Crouzon Syndrome (37)
- Crusted Scabies (1)
- Cryoglobulinemic Vasculitis (7)
- Cryopyrin-associated Periodic Syndrome (27)
- Cryptococcosis (61)
- Cryptogenic Organizing Pneumonia (3)
- Cryptosporidiosis (26)
- Currarino Triad (1)
- Cushing's Syndrome (85)
- Cutaneous Lupus Erythematosus (50)
- Cutaneous Mastocytosis (8)
- Cutaneous Polyarteritis Nodosa (1)
- Cutaneous Sclerosis (2)
- Cutaneous T-cell Lymphoma (476)
- Cutaneous-skeletal Hypophosphatemia Syndrome (1)
- Cutis Laxa (75)
- Cylindroma (127)
- Cystic Adenomatoid Malformation of Lung (4)
- Cystic Fibrosis (1,214)
- Cysticercosis (25)
- Cystinosis (29)
- Cystinuria (19)
- Cytomegalic Inclusion Disease (331)
- Cytomegalovirus Retinitis (63)