Clinical Trials by Condition: C
- CADASIL (20)
- CANDLE Syndrome (6)
- CD4 Deficiency (2)
- CDKL5 Deficiency Disorder (61)
- CHARGE Syndrome (1)
- CHD2 Myoclonic Encephalopathy (1)
- CHILD Syndrome (7)
- CLIPPERS (2)
- CLOVES Syndrome (2)
- COVID-19 (7,925)
- CREST Syndrome (9)
- Cachexia (380)
- Cadaver (21)
- Calcinosis (323)
- Calciphylaxis (15)
- Calcium Metabolism Disorders (535)
- Calculi (920)
- Caliciviridae Infections (14)
- Callosities (17)
- Campylobacter Infections (12)
- Camurati-Engelmann Disease (104)
- Canavan Disease (10)
- Cancer Pain (339)
- Candida Glabrata (2)
- Candidemia (72)
- Candidiasis (313)
- Candidiasis, Chronic Mucocutaneous (5)
- Candidiasis, Invasive (100)
- Candidiasis, Oral (47)
- Candidiasis, Vulvovaginal (82)
- Capillary Leak Syndrome (5)
- Capillary Malformation-arteriovenous Malformation Syndrome (1)
- Capsule Opacification (144)
- Carbamoyl Phosphate Synthetase 1 Deficiency (8)
- Carbamoyl-Phosphate Synthase I Deficiency Disease (8)
- Carbohydrate Metabolism, Inborn Errors (557)
- Carbon Monoxide Poisoning (36)
- Carbuncle (2)
- Carcinogenesis (200)
- Carcinoid Heart Disease (5)
- Carcinoid Syndrome (70)
- Carcinoid Tumor (220)
- Carcinoma (21,594)
- Carcinoma in Situ (744)
- Carcinoma, Acinar Cell (49)
- Carcinoma, Adenoid Cystic (136)
- Carcinoma, Adenosquamous (120)
- Carcinoma, Basal Cell (364)
- Carcinoma, Basosquamous (1)
- Carcinoma, Bronchogenic (5,368)
- Carcinoma, Ductal (340)
- Carcinoma, Ductal, Breast (202)
- Carcinoma, Embryonal (40)
- Carcinoma, Endometrioid (106)
- Carcinoma, Giant Cell (3)
- Carcinoma, Hepatocellular (2,474)
- Carcinoma, Intraductal, Noninfiltrating (231)
- Carcinoma, Islet Cell (74)
- Carcinoma, Large Cell (28)
- Carcinoma, Lobular (88)
- Carcinoma, Medullary (62)
- Carcinoma, Merkel Cell (117)
- Carcinoma, Mucoepidermoid (80)
- Carcinoma, Neuroendocrine (336)
- Carcinoma, Non-Small-Cell Lung (6,012)
- Carcinoma, Ovarian Epithelial (2,810)
- Carcinoma, Pancreatic Ductal (46)
- Carcinoma, Papillary (46)
- Carcinoma, Papillary, Follicular (1)
- Carcinoma, Renal Cell (1,870)
- Carcinoma, Signet Ring Cell (11)
- Carcinoma, Skin Appendage (2)
- Carcinoma, Small Cell (147)
- Carcinoma, Squamous Cell (2,904)
- Carcinoma, Transitional Cell (747)
- Carcinoma, Verrucous (140)
- Carcinosarcoma (104)
- Cardiac Complexes, Premature (212)
- Cardiac Conduction System Disease (979)
- Cardiac Output, High (21)
- Cardiac Output, Low (81)
- Cardiac Rupture (4)
- Cardiac Tamponade (6)
- Cardio-Renal Syndrome (71)
- Cardiofaciocutaneous Syndrome (3)
- Cardiomegaly (315)
- Cardiomyopathies (1,200)
- Cardiomyopathy Due to Anthracyclines (2)
- Cardiomyopathy, Alcoholic (1)
- Cardiomyopathy, Dilated (211)
- Cardiomyopathy, Hypertrophic (201)
- Cardiomyopathy, Hypertrophic, Familial (7)
- Cardiomyopathy, Restrictive (11)
- Cardiospasm (110)
- Cardiotoxicity (221)
- Cardiovascular Abnormalities (1,970)
- Cardiovascular Infections (83)
- Caregiver Burden (200)
- Carney Complex (4)
- Carnitine Palmitoyltransferase 2 Deficiency (5)
- Caroli Disease (3)
- Carotid Artery Diseases (448)
- Carotid Artery Injuries (4)
- Carotid Artery Thrombosis (1)
- Carotid Body Tumor (115)
- Carotid Stenosis (269)
- Carotid-Cavernous Sinus Fistula (1)
- Carpal Tunnel Syndrome (324)
- Carpenter Syndrome (2)
- Cartilage Diseases (146)
- Cartilage-hair Hypoplasia (2)
- Castleman Disease (37)
- Cat-Scratch Disease (2)
- Catalepsy (2)
- Cataplexy (44)
- Cataract (1,381)
- Catastrophic Antiphospholipid Syndrome (2)
- Catastrophic Illness (1)
- Catatonia (12)
- Catecholaminergic Polymorphic Ventricular Tachycardia (10)
- Catheter-Related Infections (95)
- Cauda Equina Syndrome (5)
- Caudal Regression Sequence (2)
- Causalgia (16)
- Cavernous Sinus Thrombosis (1)
- Cecal Diseases (331)
- Celiac Disease (293)
- Cell Transformation, Neoplastic (152)
- Cellulite (58)
- Cellulitis (205)
- Central Centrifugal Cicatricial Alopecia (8)
- Central Congenital Hypothyroidism (3)
- Central Cord Syndrome (7)
- Central Core Disease (1)
- Central Diabetes Insipidus (12)
- Central Nervous System Bacterial Infections (162)
- Central Nervous System Cysts (3)
- Central Nervous System Diseases (27,446)
- Central Nervous System Fungal Infections (49)
- Central Nervous System Germinoma (18)
- Central Nervous System Infections (754)
- Central Nervous System Neoplasms (2,406)
- Central Nervous System Vascular Malformations (54)
- Central Nervous System Viral Diseases (183)
- Central Neurocytoma (3)
- Central Pain Syndrome (5)
- Central Serous Chorioretinopathy (71)
- Centronuclear Myopathy (15)
- Cerebellar Astrocytoma, Childhood (94)
- Cerebellar Ataxia (316)
- Cerebellar Ataxia Ectodermal Dysplasia (1)
- Cerebellar Ataxia and Hypogonadotropic Hypogonadism (1)
- Cerebellar Degeneration (6)
- Cerebellar Diseases (249)
- Cerebellar Hypoplasia (1)
- Cerebellar Liponeurocytoma (1)
- Cerebellar Neoplasms (5)
- Cerebral Amyloid Angiopathy (19)
- Cerebral Amyloid Angiopathy, Familial (19)
- Cerebral Arterial Diseases (116)
- Cerebral Astrocytoma, Childhood (90)
- Cerebral Hemorrhage (316)
- Cerebral Hemorrhage, Traumatic (2)
- Cerebral Infarction (789)
- Cerebral Palsy (1,058)
- Cerebral Palsy Ataxic (3)
- Cerebral Palsy Athetoid (2)
- Cerebral Palsy Spastic Hemiplegic (18)
- Cerebral Small Vessel Diseases (345)
- Cerebral Ventriculitis (4)
- Cerebrospinal Fluid Leak (45)
- Cerebrotendinous Xanthomatosis (10)
- Cerebrovascular Disorders (7,308)
- Cerebrovascular Trauma (19)
- Cervical Dystonia (102)
- Cervical Intraepithelial Neoplasia (361)
- Chagas Cardiomyopathy (19)
- Chagas Disease (74)
- Chalazion (11)
- Chanarin-Dorfman Syndrome (6)
- Chandler's Syndrome (26)
- Channelopathies (15)
- Chaotic Atrial Tachycardia (2)
- Charcot-Marie-Tooth Disease (479)
- 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 (13)
- Cheilitis (10)
- Chemical and Drug Induced Liver Injury (52)
- Chemical and Drug Induced Liver Injury, Chronic (2)
- Chemically-Induced Disorders (6,677)
- Chemotherapy-Induced Febrile Neutropenia (15)
- Chemotherapy-Related Cognitive Impairment (31)
- Cherubism (2)
- Chest Pain (984)
- Cheyne-Stokes Respiration (30)
- Chiari Malformation Type 2 (57)
- Chickenpox (313)
- Chikungunya (62)
- Chikungunya Fever (62)
- Chilblains (6)
- Child Behavior Disorders (33)
- Child Development Disorders, Pervasive (1,222)
- Child Nutrition Disorders (99)
- Childhood Acute Lymphoblastic Leukemia (578)
- Childhood Apraxia of Speech (8)
- 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 Fluency Disorder (2)
- Childhood-Onset Schizophrenia (7)
- Children's Interstitial Lung Disease (2)
- Chlamydia Infections (191)
- Chlamydial Pneumonia (3)
- Choanal Atresia (1)
- Cholangiocarcinoma (693)
- Cholangitis (231)
- Cholangitis, Sclerosing (111)
- Cholecystitis (189)
- Cholecystitis, Acute (90)
- Cholecystolithiasis (321)
- Choledochal Cyst (7)
- Choledocholithiasis (78)
- Cholelithiasis (321)
- Cholera (74)
- Cholestasis (370)
- Cholestasis, Extrahepatic (18)
- Cholestasis, Intrahepatic (191)
- Cholesteatoma (18)
- Cholesteatoma, Middle Ear (4)
- Cholesterol Ester Storage Disease (29)
- Cholesteryl Ester Storage Disease (30)
- Choline Deficiency (5)
- Chondroblastoma (1)
- Chondrocalcinosis (41)
- Chondrodysplasia Punctata (3)
- Chondrodysplasia Punctata Syndrome (3)
- Chondrodysplasia Punctata, Rhizomelic (3)
- Chondroma (2)
- Chondromalacia Patellae (10)
- Chondrosarcoma (107)
- Chondrosarcoma, Clear Cell (1)
- Chondrosarcoma, Mesenchymal (5)
- Chordoid Glioma of the Third Ventricle (2)
- Chordoma (57)
- Chorea (225)
- Chorea-acanthocytosis (1)
- Chorioamnionitis (34)
- Choriocarcinoma (66)
- Chorioretinitis (12)
- Choristoma (8)
- Choroid Diseases (264)
- Choroid Hemorrhage (1)
- Choroid Neoplasms (5)
- Choroid Plexus Carcinoma (11)
- Choroid Plexus Neoplasms (85)
- Choroid Plexus Papilloma (1)
- Choroidal Effusions (5)
- Choroidal Neovascularization (269)
- Choroideremia (26)
- Choroiditis (45)
- Chromophil Renal Cell Carcinoma (48)
- Chromophobe Renal Cell Carcinoma (11)
- Chromosomal Instability (7)
- Chromosomal Triplication (77)
- 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)
- Chromosome Aberrations (339)
- Chromosome Deletion (18)
- Chromosome Disorders (715)
- Chronic Active Epstein-Barr Virus Infection (4)
- Chronic Disease (982)
- Chronic Eosinophilic Pneumonia (1)
- Chronic Erosive Gastritis (1)
- Chronic Exertional Compartment Syndrome (7)
- Chronic Graft Versus Host Disease (205)
- Chronic Granulomatous Disease (71)
- Chronic Inflammatory Demyelinating Polyneuropathy (73)
- Chronic Intestinal Pseudoobstruction (5)
- Chronic Kidney Disease-Mineral and Bone Disorder (50)
- Chronic Lymphocytic Leukemia (1,933)
- Chronic Myeloid Leukemia (1,255)
- Chronic Myelomonocytic Leukemia (554)
- Chronic Myeloproliferative Disorders (1,879)
- Chronic Neutrophilic Leukemia (112)
- Chronic Pain (2,308)
- Chronic Periodontitis (377)
- Chronic Progressive External Ophthalmoplegia (7)
- Chronic Recurrent Multifocal Osteomyelitis (5)
- Chronic Thromboembolic Pulmonary Hypertension (104)
- Chronic Traumatic Encephalopathy (20)
- Chronic Urticaria (133)
- Chronobiology Disorders (166)
- Churg-Strauss Syndrome (46)
- Chylomicron Retention Disease (2)
- Chylothorax (9)
- Chylothorax, Congenital (1)
- Cicatrix (1,049)
- Cicatrix, Hypertrophic (97)
- Ciguatera Fish Poisoning (1)
- Ciguatera Poisoning (1)
- Ciliary Motility Disorders (54)
- Ciliopathies (256)
- Citrullinemia (11)
- Citrullinemia Type I (4)
- Classic Galactosemia (10)
- Classical Lissencephalies and Subcortical Band Heterotopias (1)
- Clear Cell Renal Cell Carcinoma (1,327)
- Cleft Lip (109)
- Cleft Palate (105)
- Clinical Deterioration (32)
- Cloacal Exstrophy (1)
- Clostridium Infections (459)
- Clubfoot (112)
- Cluster Headache (92)
- Coagulation Protein Disorders (816)
- Coal Worker's Pneumoconiosis (40)
- Coats Disease (8)
- Cocaine Antenatal Exposure (2)
- Cocaine-Related Disorders (405)
- Coccidioidomycosis (80)
- Coccidiosis (80)
- Coccygodynia (9)
- Cochlear Diseases (2)
- Cockayne Syndrome (9)
- Coenzyme Q10 Deficiency (2)
- Coffin-Lowry Syndrome (1)
- Cogan Syndrome (5)
- Cognition Disorders (2,759)
- Cognitive Dysfunction (2,987)
- Cohen Syndrome (1)
- Coinfection (247)
- Cold Agglutinin Disease (14)
- Cold Urticaria (14)
- Colic (179)
- Colitis (1,384)
- Colitis, Collagenous (8)
- Colitis, Ischemic (3)
- Colitis, Lymphocytic (6)
- Colitis, Microscopic (21)
- Colitis, Ulcerative (1,236)
- Collagen Diseases (8,474)
- Collagenous Sprue (1)
- Collecting Duct Carcinoma (11)
- Colles' Fracture (27)
- Colloid Cysts of Third Ventricle (1)
- Coloboma (9)
- Coloboma of Optic Nerve (2)
- Colonic Diseases (6,651)
- Colonic Diseases, Functional (806)
- Colonic Neoplasms (951)
- Colonic Polyps (328)
- Colonic Pseudo-Obstruction (6)
- Color Vision Defects (18)
- Colorectal Neoplasms (5,800)
- Colorectal Neoplasms, Hereditary Nonpolyposis (87)
- Coma (215)
- Coma, Post-Head Injury (3)
- Combat Disorders (43)
- Common Bile Duct Diseases (88)
- Common Bile Duct Neoplasms (3)
- Common Cold (165)
- Common Variable Immunodeficiency (50)
- Communicable Diseases (40,911)
- Communicable Diseases, Emerging (8)
- Communication Disorders (787)
- Community-Acquired Infections (32)
- Compartment Syndromes (98)
- Compassion Fatigue (19)
- Complement Component 5 Deficiency (1)
- Complement Component Deficiency (1)
- Complete Androgen Insensitivity Syndrome (2)
- Complete Atrioventricular Canal (4)
- Complex Regional Pain Syndromes (146)
- Composite Lymphoma (3)
- Compulsive Behavior (392)
- Compulsive Exercise (4)
- Compulsive Personality Disorder (483)
- Conduct Disorder (257)
- Condylomata Acuminata (93)
- Cone Dystrophy (30)
- Cone-Rod Dystrophies (18)
- Cone-rod Dystrophy 2 (16)
- Confusion (935)
- Congenital Abnormalities (7,042)
- Congenital Adrenal Hyperplasia (136)
- Congenital Amegakaryocytic Thrombocytopenia (9)
- Congenital Amputation (3)
- Congenital Aplastic Anemia (96)
- Congenital Bone Marrow Failure Syndromes (124)
- Congenital Central Hypoventilation Syndrome (9)
- Congenital Contractural Arachnodactyly (1)
- Congenital Cytomegalovirus (46)
- Congenital Diaphragmatic Hernia (73)
- Congenital Disorders of Glycosylation (10)
- Congenital Dyserythropoietic Anemia (6)
- Congenital Dyserythropoietic Anemia Type 1 (2)
- Congenital Erythropoietic Porphyria (54)
- 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 (7)
- Congenital Human Immunodeficiency Virus (1)
- Congenital Hyperinsulinism (48)
- Congenital Hypopituitarism (2)
- Congenital Hypothyroidism (14)
- Congenital Insensitivity to Pain (1)
- Congenital Lymphedema (11)
- Congenital Mesoblastic Nephroma (7)
- Congenital Microtia (15)
- Congenital Mirror Movement Disorder (5)
- Congenital Muscular Dystrophy (15)
- Congenital Muscular Dystrophy Due to Dystroglycanopathy (3)
- Congenital Muscular Dystrophy Type 1A (4)
- Congenital Myasthenic Syndromes (11)
- Congenital Myotonic Dystrophy (6)
- Congenital Pseudoarthrosis (4)
- Congenital Rubella (2)
- Congenital Sucrase-isomaltase Deficiency (5)
- 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 (2)
- Conjunctival Diseases (1,188)
- Conjunctival Melanoma (8)
- Conjunctival Neoplasms (5)
- Conjunctivitis (1,089)
- Conjunctivitis, Allergic (207)
- Conjunctivitis, Bacterial (76)
- Conjunctivitis, Inclusion (10)
- Conjunctivitis, Viral (16)
- Connective Tissue Diseases (5,960)
- Conotruncal Heart Malformations (3)
- Consciousness Disorders (464)
- Constipation (861)
- Constriction, Pathologic (2,846)
- Continuous Spike-wave During Slow Sleep Syndrome (7)
- Contracture (163)
- Contusions (68)
- Convalescence (25)
- Conversion Disorder (155)
- Coproporphyria, Hereditary (12)
- Corneal Diseases (1,439)
- Corneal Dystrophies, Hereditary (95)
- Corneal Edema (37)
- Corneal Endothelial Cell Loss (23)
- Corneal Endothelial Dystrophy Type 2 (10)
- Corneal Injuries (32)
- Corneal Neovascularization (25)
- Corneal Opacity (38)
- Corneal Perforation (4)
- Corneal Ulcer (55)
- Corneal Wavefront Aberration (5)
- Cornelia De Lange Syndrome (4)
- Coronary Aneurysm (21)
- Coronary Artery Aneurysm (21)
- Coronary Artery Disease (8,707)
- Coronary Disease (5,569)
- Coronary Occlusion (100)
- Coronary Restenosis (114)
- Coronary Stenosis (377)
- Coronary Thrombosis (19)
- Coronary Vasospasm (29)
- Coronary Vessel Anomalies (25)
- Coronaviridae Infections (6,656)
- Coronavirus Infections (6,813)
- Corpus Callosum Agenesis (15)
- Corticobasal Degeneration (38)
- Corynebacterium Infections (242)
- Costello Syndrome (4)
- Cough (721)
- Cowden Syndrome (7)
- Coxsackievirus Infections (58)
- Cramp-fasciculation Syndrome (1)
- Cranial Nerve Diseases (1,015)
- Cranial Nerve Injuries (43)
- Craniocerebral Trauma (2,406)
- Cranioectodermal Dysplasia (1)
- Craniofacial Abnormalities (361)
- Craniofacial Dysostosis (23)
- Craniofacial Fibrous Dysplasia (1)
- Craniofacial Microsomia (9)
- Craniofrontonasal Dysplasia (1)
- Craniomandibular Disorders (281)
- Craniopharyngioma (107)
- Craniosynostoses (56)
- Creutzfeldt-Jakob Disease (8)
- Creutzfeldt-Jakob Syndrome (7)
- Cri-du-Chat Syndrome (1)
- Crigler Najjar Syndrome, Type 1 (12)
- Crigler-Najjar Syndrome (12)
- Critical Illness (2,078)
- Crohn Disease (1,447)
- Cross Infection (524)
- Croup (33)
- Crouzon Syndrome (44)
- Crush Injuries (117)
- Crush Syndrome (1)
- Crusted Scabies (1)
- Cryoglobulinemia (14)
- Cryoglobulinemic Vasculitis (10)
- Cryopyrin-Associated Periodic Syndromes (31)
- Cryptococcosis (63)
- Cryptogenic Organizing Pneumonia (3)
- Cryptorchidism (28)
- Cryptosporidiosis (28)
- Crystal Arthropathies (209)
- Cubital Tunnel Syndrome (22)
- Cumulative Trauma Disorders (371)
- Currarino Triad (1)
- Cushing Syndrome (96)
- Cutaneous Fistula (5)
- Cutaneous Lupus Erythematosus (58)
- Cutaneous Mastocytosis (10)
- Cutaneous Polyarteritis Nodosa (2)
- Cutaneous Sclerosis (2)
- Cutaneous T-cell Lymphoma (494)
- Cutaneous-skeletal Hypophosphatemia Syndrome (1)
- Cutis Laxa (94)
- Cyanosis (11)
- Cyberbullying (9)
- Cyclothymic Disorder (6)
- Cystadenocarcinoma (245)
- Cystadenocarcinoma, Mucinous (56)
- Cystadenocarcinoma, Serous (221)
- Cystadenoma (9)
- Cystadenoma, Mucinous (5)
- Cystadenoma, Serous (5)
- Cystic Adenomatoid Malformation of Lung (4)
- Cystic Adenomatoid Malformation of Lung, Congenital (4)
- Cystic Fibrosis (1,354)
- Cysticercosis (28)
- Cystinosis (31)
- Cystinuria (23)
- Cystitis (267)
- Cystitis, Interstitial (186)
- Cystocele (62)
- Cysts (1,202)
- Cytokine Release Syndrome (112)
- Cytomegalic Inclusion Disease (362)
- Cytomegalovirus Infections (362)
- Cytomegalovirus Retinitis (64)