Clinical Trials Involving Rare Diseases: C
- CADASIL (24)
- CANDLE Syndrome (6)
- CD4 Deficiency (2)
- CDKL5 Deficiency Disorder (72)
- CHARGE Syndrome (1)
- CHD2 Myoclonic Encephalopathy (1)
- CHILD Syndrome (7)
- CLIPPERS (2)
- CLOVES Syndrome (3)
- COASY Protein-Associated Neurodegeneration (1)
- Calciphylaxis (16)
- Camurati-Engelmann Disease (113)
- Canavan Disease (10)
- Candida Glabrata (2)
- Capillary Malformation-arteriovenous Malformation Syndrome (1)
- Carbamoyl Phosphate Synthetase 1 Deficiency (9)
- Carcinoid Syndrome (71)
- Carcinoid Tumor (224)
- Cardiac Rupture (5)
- Cardiofaciocutaneous Syndrome (3)
- Cardiomyopathy Due to Anthracyclines (2)
- Cardiospasm (112)
- Carney Complex (4)
- Carnitine Palmitoyl Transferase 1A Deficiency (2)
- Carnitine Palmitoyltransferase 2 Deficiency (5)
- Carnitine-acylcarnitine Translocase Deficiency (4)
- Caroli Disease (3)
- Carpenter Syndrome (2)
- Cartilage-hair Hypoplasia (2)
- Castleman Disease (39)
- Cat Scratch Disease (2)
- Catastrophic Antiphospholipid Syndrome (2)
- Catecholaminergic Polymorphic Ventricular Tachycardia (12)
- Cauda Equina Syndrome (6)
- Caudal Regression Sequence (2)
- Central Centrifugal Cicatricial Alopecia (10)
- Central Congenital Hypothyroidism (3)
- Central Core Disease (1)
- Central Diabetes Insipidus (12)
- Central Nervous System Germinoma (75)
- Central Neurocytoma (3)
- Central Pain Syndrome (6)
- Central Serous Chorioretinopathy (79)
- Centronuclear Myopathy (15)
- Cerebellar Astrocytoma, Childhood (94)
- Cerebellar Ataxia Ectodermal Dysplasia (1)
- Cerebellar Ataxia and Hypogonadotropic Hypogonadism (1)
- Cerebellar Degeneration (7)
- Cerebellar Hypoplasia (1)
- Cerebellar Liponeurocytoma (1)
- Cerebral Astrocytoma, Childhood (90)
- Cerebral Folate Deficiency (1)
- Cerebral Palsy Ataxic (4)
- Cerebral Palsy Athetoid (3)
- Cerebral Palsy Spastic Hemiplegic (20)
- Cerebrospinal Fluid Leak (46)
- Cerebrotendinous Xanthomatosis (12)
- Cervical Dystonia (103)
- Cervical Intraepithelial Neoplasia (383)
- Chanarin-Dorfman Syndrome (6)
- Chaotic Atrial Tachycardia (2)
- Charcot-Marie-Tooth Disease (545)
- Charcot-Marie-Tooth Disease Type 1 (14)
- Charcot-Marie-Tooth Disease Type 1A (21)
- Charcot-Marie-Tooth Disease Type 1B (3)
- Charcot-Marie-Tooth Disease Type 2 (2)
- Charcot-Marie-Tooth Disease Type 2A (3)
- Charles Bonnet Syndrome (3)
- Chediak-Higashi Syndrome (14)
- Cherubism (2)
- Chiari Malformation Type 2 (58)
- Chikungunya (63)
- Childhood Acute Lymphoblastic Leukemia (609)
- Childhood Apraxia of Speech (9)
- Childhood Brain Stem Glioma (102)
- Childhood Disintegrative Disorder (2)
- Childhood Hepatocellular Carcinoma (12)
- Childhood Hypophosphatasia (1)
- Childhood Supratentorial Embryonal Tumor, Not Otherwise Specified (86)
- Childhood-Onset Schizophrenia (7)
- Children's Interstitial Lung Disease (2)
- Cholecystitis (200)
- Cholera (78)
- Cholesteatoma (19)
- Cholesteryl Ester Storage Disease (34)
- Chondroblastoma (1)
- Chondrodysplasia Punctata Syndrome (3)
- Chondroma (2)
- Chondrosarcoma (113)
- Chordoid Glioma of the Third Ventricle (2)
- Chordoma (61)
- Chorea-acanthocytosis (1)
- Choriocarcinoma (67)
- Chorioretinitis (12)
- Choroid Plexus Carcinoma (11)
- Choroid Plexus Papilloma (1)
- Choroideremia (26)
- Choroiditis (47)
- Chromophil Renal Cell Carcinoma (50)
- Chromophobe Renal Cell Carcinoma (11)
- Chromosomal Triplication (81)
- Chromosome 15q Duplication (2)
- Chromosome 17p Deletion (20)
- Chromosome 1p36 Deletion Syndrome (2)
- Chromosome 1q21.1 Duplication Syndrome (1)
- Chromosome 3q29 Microduplication Syndrome (1)
- Chromosome 5q Deletion (12)
- Chromosome 7q Duplication (1)
- Chromosome 9p Deletion (1)
- Chronic Active Epstein-Barr Virus Infection (6)
- Chronic Eosinophilic Pneumonia (1)
- Chronic Erosive Gastritis (1)
- Chronic Graft Versus Host Disease (29,135)
- Chronic Granulomatous Disease (74)
- Chronic Inflammatory Demyelinating Polyneuropathy (77)
- Chronic Intestinal Pseudoobstruction (5)
- Chronic Lymphocytic Leukemia (1,989)
- Chronic Myeloid Leukemia (1,276)
- Chronic Myelomonocytic Leukemia (568)
- Chronic Myeloproliferative Disorders (1,942)
- Chronic Neutrophilic Leukemia (111)
- Chronic Progressive External Ophthalmoplegia (7)
- Chronic Recurrent Multifocal Osteomyelitis (5)
- Chronic Thromboembolic Pulmonary Hypertension (111)
- Chylomicron Retention Disease (2)
- Chylothorax, Congenital (1)
- Ciguatera Fish Poisoning (1)
- Citrullinemia Type I (5)
- Citrullinemia Type II (1)
- Classic Galactosemia (12)
- Classical Ehlers-Danlos Syndrome (2)
- Clear Cell Renal Cell Carcinoma (1,384)
- Cleidocranial Dysplasia (1)
- Cloacal Exstrophy (1)
- Coal Worker's Pneumoconiosis (45)
- Coats Disease (9)
- Cocaine Antenatal Exposure (2)
- Coccidioidomycosis (80)
- Coccygodynia (11)
- Cockayne Syndrome (10)
- Coenzyme Q10 Deficiency (4)
- Coffin-Lowry Syndrome (1)
- Cogan's Syndrome (6)
- Cohen Syndrome (1)
- Cold Agglutinin Disease (14)
- Cold Urticaria (16)
- Collecting Duct Carcinoma (12)
- Colloid Cysts of Third Ventricle (1)
- Coloboma of Optic Nerve (2)
- Common Variable Immunodeficiency (53)
- Compartment Syndrome (106)
- Complement Component Deficiency (1)
- Complete Androgen Insensitivity Syndrome (2)
- Complete Atrioventricular Canal (6)
- Complex Regional Pain Syndrome (157)
- Cone Dystrophy (32)
- Cone-rod Dystrophy (18)
- Cone-rod Dystrophy 2 (16)
- Congenital Adrenal Hyperplasia (142)
- Congenital Amegakaryocytic Thrombocytopenia (9)
- Congenital Amputation (3)
- Congenital Aplastic Anemia (99)
- Congenital Central Hypoventilation Syndrome (9)
- Congenital Contractural Arachnodactyly (1)
- Congenital Cytomegalovirus (49)
- Congenital Diaphragmatic Hernia (78)
- Congenital Disorders of Glycosylation (15)
- Congenital Dyserythropoietic Anemia (6)
- Congenital Dyserythropoietic Anemia Type 1 (2)
- Congenital Erythropoietic Porphyria (57)
- Congenital Fiber Type Disproportion (1)
- Congenital Fibrosis of Extraocular Muscles (1)
- Congenital Generalized Lipodystrophy (11)
- Congenital Heart Block (6)
- Congenital Hemolytic Anemia (5)
- Congenital Hepatic Fibrosis (3)
- Congenital Herpes Simplex (8)
- Congenital Human Immunodeficiency Virus (1)
- Congenital Hyperinsulinism (50)
- Congenital Hypopituitarism (2)
- Congenital Hypothyroidism (16)
- Congenital Insensitivity to Pain (1)
- Congenital Lymphedema (13)
- Congenital Mesoblastic Nephroma (7)
- Congenital Mirror Movement Disorder (6)
- Congenital Muscular Dystrophy (16)
- Congenital Muscular Dystrophy Due to Dystroglycanopathy (3)
- Congenital Muscular Dystrophy Due to LMNA Mutation (1)
- Congenital Muscular Dystrophy Type 1A (4)
- Congenital Myasthenic Syndromes (13)
- Congenital Myotonic Dystrophy (6)
- Congenital Pseudoarthrosis (5)
- Congenital Rubella (2)
- Congenital Sucrase-isomaltase Deficiency (9)
- Congenital Thrombotic Thrombocytopenic Purpura (7)
- Congenital Torticollis (11)
- Congenital Tracheal Stenosis (1)
- Congenital Vertical Talus (1)
- Congenital Zika Syndrome (2)
- Congenitally Corrected Transposition of the Great Arteries (3)
- Conjunctival Melanoma (9)
- Conotruncal Heart Malformations (3)
- Continuous Spike-wave During Slow Sleep Syndrome (7)
- Conversion Disorder (189)
- Corneal Endothelial Dystrophy Type 2 (11)
- Cornelia De Lange Syndrome (4)
- Coronary Artery Aneurysm (25)
- Corpus Callosum Agenesis (15)
- Corticobasal Degeneration (40)
- Corticosteroid-sensitive Aseptic Abscesses (1)
- Costello Syndrome (4)
- Cowden Syndrome (8)
- Cramp-fasciculation Syndrome (1)
- Cranioectodermal Dysplasia (1)
- Craniofacial Microsomia (10)
- Craniofrontonasal Dysplasia (1)
- Craniopharyngioma (109)
- Craniosynostosis (38)
- Creutzfeldt-Jakob Disease (8)
- Cri Du Chat Syndrome (1)
- Crigler Najjar Syndrome, Type 1 (13)
- Crouzon Syndrome (45)
- Crusted Scabies (1)
- Cryoglobulinemic Vasculitis (10)
- Cryopyrin-associated Periodic Syndrome (31)
- Cryptococcosis (67)
- Cryptogenic Organizing Pneumonia (3)
- Cryptosporidiosis (28)
- Currarino Triad (1)
- Cushing's Syndrome (103)
- Cutaneous Lupus Erythematosus (64)
- Cutaneous Mastocytosis (10)
- Cutaneous Polyarteritis Nodosa (2)
- Cutaneous Sclerosis (2)
- Cutaneous T-cell Lymphoma (518)
- Cutaneous-skeletal Hypophosphatemia Syndrome (1)
- Cutis Laxa (105)
- Cystic Adenomatoid Malformation of Lung (5)
- Cystic Fibrosis (1,407)
- Cysticercosis (28)
- Cystinosis (34)
- Cystinuria (23)
- Cytomegalic Inclusion Disease (388)
- Cytomegalovirus Retinitis (64)