Clinical Trials Involving Rare Diseases: C
- CADASIL (12)
- CANDLE Syndrome (3)
- CD4 Deficiency (2)
- CDKL5 Deficiency Disorder (5)
- CHD2 Myoclonic Encephalopathy (1)
- CHILD Syndrome (9)
- CLIPPERS (2)
- CLOVES Syndrome (2)
- CREST Syndrome (7)
- Calciphylaxis (11)
- Camurati-Engelmann Disease (68)
- Canavan Disease (6)
- Candida Glabrata (2)
- Capillary Hemangioblastoma (11)
- Carbamoyl Phosphate Synthetase 1 Deficiency (8)
- Carcinoid Syndrome (62)
- Carcinoid Tumor (193)
- Cardiac Rupture (2)
- Cardiomyopathy Due to Anthracyclines (1)
- Cardiospasm (86)
- Carney Complex (4)
- Carnitine Palmitoyltransferase 2 Deficiency (5)
- Caroli Disease (3)
- Carotid Body Tumor (85)
- Carpenter Syndrome (1)
- Cartilage-hair Hypoplasia (2)
- Castleman Disease (28)
- Cat Scratch Disease (2)
- Catastrophic Antiphospholipid Syndrome (1)
- Catecholaminergic Polymorphic Ventricular Tachycardia (5)
- Cauda Equina Syndrome (4)
- Central Centrifugal Cicatricial Alopecia (5)
- Central Congenital Hypothyroidism (1)
- Central Core Disease (2)
- Central Diabetes Insipidus (4)
- Central Nervous System Germinoma (19)
- Central Neurocytoma (2)
- Central Pain Syndrome (4)
- Central Serous Chorioretinopathy (58)
- Centronuclear Myopathy (12)
- Cerebellar Astrocytoma, Childhood (95)
- Cerebellar Ataxia Ectodermal Dysplasia (1)
- Cerebellar Ataxia and Hypogonadotropic Hypogonadism (1)
- Cerebellar Degeneration (3)
- Cerebellar Hypoplasia (1)
- Cerebellar Liponeurocytoma (1)
- Cerebral Astrocytoma, Childhood (92)
- Cerebral Palsy Ataxic (2)
- Cerebral Palsy Athetoid (2)
- Cerebral Palsy Spastic Hemiplegic (9)
- Cerebrospinal Fluid Leak (31)
- Cerebrotendinous Xanthomatosis (6)
- Ceroid Storage Disease (27)
- Cervical Dystonia (88)
- Cervical Intraepithelial Neoplasia (305)
- Chanarin-Dorfman Syndrome (7)
- Chandler's Syndrome (13)
- Chaotic Atrial Tachycardia (2)
- Charcot-Marie-Tooth Disease (322)
- 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 (12)
- Cherubism (2)
- Chiari Malformation Type 2 (49)
- Chikungunya (39)
- Childhood Acute Lymphoblastic Leukemia (491)
- Childhood Apraxia of Speech (4)
- Childhood Brain Stem Glioma (104)
- Childhood Disintegrative Disorder (2)
- Childhood Hepatocellular Carcinoma (12)
- Childhood Hypophosphatasia (1)
- Childhood Non-Hodgkin Lymphoma (24)
- Childhood Supratentorial Embryonal Tumor, Not Otherwise Specified (93)
- Childhood-Onset Schizophrenia (7)
- Children's Interstitial Lung Disease (1)
- Cholecystitis (115)
- Cholera (66)
- Cholesteatoma (11)
- Cholesteryl Ester Storage Disease (28)
- Chondroblastoma (1)
- Chondrodysplasia Punctata Syndrome (2)
- Chondroma (2)
- Chondrosarcoma (83)
- Chordoid Glioma of the Third Ventricle (2)
- Chordoma (46)
- Chorea-acanthocytosis (1)
- Choriocarcinoma (65)
- Chorioretinitis (7)
- Choroid Plexus Carcinoma (8)
- Choroideremia (20)
- Choroiditis (38)
- Chromophil Renal Cell Carcinoma (40)
- Chromophobe Renal Cell Carcinoma (9)
- Chromosomal Triplication (68)
- Chromosome 15q Duplication (2)
- Chromosome 17p Deletion (18)
- Chromosome 1p36 Deletion Syndrome (2)
- 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 (168)
- Chronic Granulomatous Disease (65)
- Chronic Inflammatory Demyelinating Polyneuropathy (46)
- Chronic Intestinal Pseudoobstruction (2)
- Chronic Lymphocytic Leukemia (1,714)
- Chronic Myeloid Leukemia (1,170)
- Chronic Myelomonocytic Leukemia (493)
- Chronic Myeloproliferative Disorders (1,478)
- Chronic Neutrophilic Leukemia (110)
- Chronic Progressive External Ophthalmoplegia (3)
- Chronic Recurrent Multifocal Osteomyelitis (3)
- Chronic Thromboembolic Pulmonary Hypertension (79)
- Chylothorax, Congenital (1)
- Cicatricial Pemphigoid (10)
- Ciguatera Fish Poisoning (1)
- Citrullinemia Type I (8)
- Classic Galactosemia (7)
- Clear Cell Renal Cell Carcinoma (200)
- Cloacal Exstrophy (1)
- Coal Worker's Pneumoconiosis (28)
- Coats Disease (5)
- Cocaine Antenatal Exposure (2)
- Coccidioidomycosis (64)
- Coccygodynia (2)
- Cockayne Syndrome (7)
- Cogan's Syndrome (4)
- Cohen Syndrome (1)
- Cold Agglutinin Disease (9)
- Cold Urticaria (10)
- Collecting Duct Carcinoma (8)
- Coloboma of Optic Nerve (2)
- Common Variable Immunodeficiency (46)
- Compartment Syndrome (70)
- Complement Component 5 Deficiency (1)
- Complement Component Deficiency (1)
- Complete Atrioventricular Canal (4)
- Complex Regional Pain Syndrome (121)
- Cone Dystrophy (23)
- Cone-rod Dystrophy (13)
- Cone-rod Dystrophy 2 (12)
- Congenital Adrenal Hyperplasia (106)
- Congenital Amegakaryocytic Thrombocytopenia (7)
- Congenital Aplastic Anemia (85)
- Congenital Central Hypoventilation Syndrome (8)
- Congenital Contractural Arachnodactyly (1)
- Congenital Cytomegalovirus (35)
- Congenital Diaphragmatic Hernia (54)
- Congenital Disorders of Glycosylation (5)
- Congenital Dyserythropoietic Anemia (4)
- Congenital Dyserythropoietic Anemia Type 1 (2)
- Congenital Erythropoietic Porphyria (46)
- Congenital Fiber Type Disproportion (2)
- Congenital Fibrosis of Extraocular Muscles (1)
- Congenital Generalized Fibromatosis (1)
- Congenital Generalized Lipodystrophy (8)
- Congenital Heart Block (6)
- Congenital Hemolytic Anemia (3)
- Congenital Hepatic Fibrosis (3)
- Congenital Herpes Simplex (5)
- Congenital Human Immunodeficiency Virus (1)
- Congenital Hydrocephalus (126)
- Congenital Hyperinsulinism (34)
- Congenital Hypothyroidism (10)
- Congenital Insensitivity to Pain (1)
- Congenital Lymphedema (7)
- Congenital Mesoblastic Nephroma (7)
- Congenital Mirror Movement Disorder (3)
- Congenital Muscular Dystrophy (11)
- Congenital Muscular Dystrophy Due to Dystroglycanopathy (3)
- Congenital Muscular Dystrophy Type 1A (2)
- Congenital Myasthenic Syndrome (11)
- Congenital Myotonic Dystrophy (4)
- Congenital Pseudoarthrosis (4)
- Congenital Rubella (1)
- Congenital Sucrase-isomaltase Deficiency (2)
- Congenital Sucrose Isomaltose Malabsorption (2)
- Congenital Thrombotic Thrombocytopenic Purpura (6)
- Congenital Torticollis (9)
- Congenital Tracheal Stenosis (1)
- Congenital Vertical Talus (1)
- Conotruncal Heart Malformations (3)
- Continuous Spike-wave During Slow Sleep Syndrome (5)
- Conversion Disorder (117)
- Corneal Endothelial Dystrophy Type 2 (5)
- Cornelia De Lange Syndrome (2)
- Coronary Artery Aneurysm (13)
- Corpus Callosum Agenesis (13)
- Corticobasal Degeneration (27)
- Costello Syndrome (1)
- Cowden Syndrome (6)
- Cramp-fasciculation Syndrome (1)
- Craniofacial Microsomia (9)
- Craniofrontonasal Dysplasia (1)
- Craniopharyngioma (100)
- Craniosynostosis (45)
- Creutzfeldt-Jakob Disease (6)
- Cri Du Chat Syndrome (1)
- Crigler Najjar Syndrome, Type 1 (11)
- Crouzon Syndrome (32)
- Crusted Scabies (1)
- Cryoglobulinemia (10)
- Cryopyrin-associated Periodic Syndrome (23)
- Cryptococcosis (57)
- Cryptogenic Organizing Pneumonia (2)
- Cryptosporidiosis (24)
- Currarino Triad (1)
- Cushing's Syndrome (78)
- Cutaneous Lupus Erythematosus (49)
- Cutaneous Mastocytosis (7)
- Cutaneous Polyarteritis Nodosa (1)
- Cutaneous Sclerosis (2)
- Cutaneous T-cell Lymphoma (466)
- Cutaneous-skeletal Hypophosphatemia Syndrome (1)
- Cutis Laxa (62)
- Cylindroma (118)
- Cystic Adenomatoid Malformation of Lung (3)
- Cystic Fibrosis (1,117)
- Cysticercosis (25)
- Cystinosis (27)
- Cystinuria (17)
- Cytomegalic Inclusion Disease (316)
- Cytomegalovirus Retinitis (63)