Clinical Trials by Condition: 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)
- COVID-19 (8,642)
- CREST Syndrome (9)
- Cachexia (402)
- Cadaver (24)
- Calcinosis (345)
- Calciphylaxis (16)
- Calcium Metabolism Disorders (565)
- Calculi (990)
- Caliciviridae Infections (15)
- Callosities (19)
- Campylobacter Infections (13)
- Camurati-Engelmann Disease (113)
- Canavan Disease (10)
- Cancer Pain (355)
- Candida Glabrata (2)
- Candidemia (74)
- Candidiasis (323)
- Candidiasis, Chronic Mucocutaneous (5)
- Candidiasis, Invasive (103)
- Candidiasis, Oral (48)
- Candidiasis, Vulvovaginal (87)
- Capillary Leak Syndrome (5)
- Capillary Malformation-arteriovenous Malformation Syndrome (1)
- Capsule Opacification (153)
- Carbamoyl Phosphate Synthetase 1 Deficiency (9)
- Carbamoyl-Phosphate Synthase I Deficiency Disease (9)
- Carbohydrate Metabolism, Inborn Errors (591)
- Carbon Monoxide Poisoning (39)
- Carbuncle (2)
- Carcinogenesis (208)
- Carcinoid Heart Disease (5)
- Carcinoid Syndrome (71)
- Carcinoid Tumor (225)
- Carcinoma (22,864)
- Carcinoma in Situ (771)
- Carcinoma, Acinar Cell (50)
- Carcinoma, Adenoid Cystic (141)
- Carcinoma, Adenosquamous (124)
- Carcinoma, Basal Cell (377)
- Carcinoma, Basosquamous (1)
- Carcinoma, Bronchogenic (5,657)
- Carcinoma, Ductal (354)
- Carcinoma, Ductal, Breast (204)
- Carcinoma, Embryonal (41)
- Carcinoma, Endometrioid (111)
- Carcinoma, Giant Cell (3)
- Carcinoma, Hepatocellular (2,666)
- Carcinoma, Intraductal, Noninfiltrating (235)
- Carcinoma, Islet Cell (74)
- Carcinoma, Large Cell (28)
- Carcinoma, Lobular (91)
- Carcinoma, Medullary (64)
- Carcinoma, Merkel Cell (121)
- Carcinoma, Mucoepidermoid (80)
- Carcinoma, Neuroendocrine (363)
- Carcinoma, Non-Small-Cell Lung (6,334)
- Carcinoma, Ovarian Epithelial (2,949)
- Carcinoma, Pancreatic Ductal (53)
- Carcinoma, Papillary (50)
- Carcinoma, Papillary, Follicular (1)
- Carcinoma, Renal Cell (1,944)
- Carcinoma, Signet Ring Cell (12)
- Carcinoma, Skin Appendage (2)
- Carcinoma, Small Cell (155)
- Carcinoma, Squamous Cell (3,083)
- Carcinoma, Transitional Cell (789)
- Carcinoma, Verrucous (140)
- Carcinosarcoma (110)
- Cardiac Complexes, Premature (225)
- Cardiac Conduction System Disease (1,046)
- Cardiac Output, High (25)
- Cardiac Output, Low (84)
- Cardiac Rupture (5)
- Cardiac Tamponade (6)
- Cardio-Renal Syndrome (73)
- Cardiofaciocutaneous Syndrome (3)
- Cardiomegaly (326)
- Cardiomyopathies (1,291)
- Cardiomyopathy Due to Anthracyclines (2)
- Cardiomyopathy, Alcoholic (1)
- Cardiomyopathy, Dilated (217)
- Cardiomyopathy, Hypertrophic (218)
- Cardiomyopathy, Hypertrophic, Familial (8)
- Cardiomyopathy, Restrictive (11)
- Cardiospasm (112)
- Cardiotoxicity (238)
- Cardiovascular Abnormalities (2,088)
- Cardiovascular Infections (96)
- Caregiver Burden (241)
- Carney Complex (4)
- Carnitine Palmitoyl Transferase 1A Deficiency (2)
- Carnitine Palmitoyltransferase 2 Deficiency (5)
- Carnitine-acylcarnitine Translocase Deficiency (4)
- Caroli Disease (3)
- Carotid Artery Diseases (479)
- Carotid Artery Injuries (5)
- Carotid Artery Thrombosis (1)
- Carotid Stenosis (290)
- Carotid-Cavernous Sinus Fistula (1)
- Carpal Tunnel Syndrome (367)
- Carpenter Syndrome (2)
- Cartilage Diseases (152)
- Cartilage-hair Hypoplasia (2)
- Castleman Disease (39)
- Cat-Scratch Disease (2)
- Catalepsy (2)
- Cataplexy (48)
- Cataract (1,478)
- Catastrophic Antiphospholipid Syndrome (2)
- Catastrophic Illness (1)
- Catatonia (13)
- Catecholaminergic Polymorphic Ventricular Tachycardia (12)
- Catheter-Related Infections (102)
- Cauda Equina Syndrome (6)
- Caudal Regression Sequence (2)
- Causalgia (16)
- Cavernous Sinus Thrombosis (1)
- Cecal Diseases (353)
- Celiac Disease (316)
- Cell Transformation, Neoplastic (156)
- Cellulite (64)
- Cellulitis (209)
- Cementoma (1)
- Central Centrifugal Cicatricial Alopecia (10)
- Central Congenital Hypothyroidism (3)
- Central Cord Syndrome (7)
- Central Core Disease (1)
- Central Diabetes Insipidus (12)
- Central Nervous System Bacterial Infections (168)
- Central Nervous System Cysts (3)
- Central Nervous System Diseases (29,361)
- Central Nervous System Fungal Infections (52)
- Central Nervous System Germinoma (75)
- Central Nervous System Infections (794)
- Central Nervous System Neoplasms (2,512)
- Central Nervous System Vascular Malformations (55)
- Central Nervous System Viral Diseases (187)
- Central Neurocytoma (3)
- Central Pain Syndrome (6)
- Central Serous Chorioretinopathy (79)
- Centronuclear Myopathy (15)
- Cerebellar Astrocytoma, Childhood (94)
- Cerebellar Ataxia (342)
- Cerebellar Ataxia Ectodermal Dysplasia (1)
- Cerebellar Ataxia and Hypogonadotropic Hypogonadism (1)
- Cerebellar Degeneration (7)
- Cerebellar Diseases (269)
- Cerebellar Hypoplasia (1)
- Cerebellar Liponeurocytoma (1)
- Cerebellar Neoplasms (6)
- Cerebral Amyloid Angiopathy (24)
- Cerebral Amyloid Angiopathy, Familial (24)
- Cerebral Arterial Diseases (127)
- Cerebral Astrocytoma, Childhood (90)
- Cerebral Folate Deficiency (1)
- Cerebral Hemorrhage (347)
- Cerebral Hemorrhage, Traumatic (2)
- Cerebral Infarction (861)
- Cerebral Palsy (1,172)
- Cerebral Palsy Ataxic (4)
- Cerebral Palsy Athetoid (3)
- Cerebral Palsy Spastic Hemiplegic (20)
- Cerebral Small Vessel Diseases (371)
- Cerebral Ventricle Neoplasms (28)
- Cerebral Ventriculitis (4)
- Cerebrospinal Fluid Leak (46)
- Cerebrotendinous Xanthomatosis (12)
- Cerebrovascular Disorders (7,915)
- Cerebrovascular Trauma (21)
- Cervical Dystonia (103)
- Cervical Intraepithelial Neoplasia (383)
- Chagas Cardiomyopathy (20)
- Chagas Disease (76)
- Chalazion (12)
- Chanarin-Dorfman Syndrome (6)
- Channelopathies (15)
- Chaotic Atrial Tachycardia (2)
- Charcot-Marie-Tooth Disease (544)
- 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)
- Cheilitis (10)
- Chemical and Drug Induced Liver Injury (55)
- Chemical and Drug Induced Liver Injury, Chronic (2)
- Chemically-Induced Disorders (7,021)
- Chemotherapy-Induced Febrile Neutropenia (15)
- Chemotherapy-Related Cognitive Impairment (34)
- Cherubism (2)
- Chest Pain (1,017)
- Cheyne-Stokes Respiration (30)
- Chiari Malformation Type 2 (58)
- Chickenpox (335)
- Chikungunya (63)
- Chikungunya Fever (63)
- Chilblains (6)
- Child Behavior Disorders (35)
- Child Development Disorders, Pervasive (1,322)
- Child Nutrition Disorders (111)
- Childhood Acute Lymphoblastic Leukemia (607)
- 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 Fluency Disorder (4)
- Childhood-Onset Schizophrenia (7)
- Children's Interstitial Lung Disease (2)
- Chlamydia Infections (198)
- Chlamydial Pneumonia (3)
- Choanal Atresia (1)
- Cholangiocarcinoma (748)
- Cholangitis (248)
- Cholangitis, Sclerosing (119)
- Cholecystitis (198)
- Cholecystitis, Acute (96)
- Cholecystolithiasis (342)
- Choledochal Cyst (9)
- Choledocholithiasis (83)
- Cholelithiasis (342)
- Cholera (78)
- Cholestasis (383)
- Cholestasis, Extrahepatic (18)
- Cholestasis, Intrahepatic (202)
- Cholesteatoma (19)
- Cholesteatoma, Middle Ear (4)
- Cholesterol Ester Storage Disease (33)
- Cholesteryl Ester Storage Disease (34)
- Choline Deficiency (5)
- Chondroblastoma (1)
- Chondrocalcinosis (45)
- Chondrodysplasia Punctata (3)
- Chondrodysplasia Punctata Syndrome (3)
- Chondrodysplasia Punctata, Rhizomelic (3)
- Chondroma (2)
- Chondromalacia Patellae (12)
- Chondrosarcoma (113)
- Chondrosarcoma, Clear Cell (1)
- Chondrosarcoma, Mesenchymal (6)
- Chordoid Glioma of the Third Ventricle (2)
- Chordoma (61)
- Chorea (232)
- Chorea-acanthocytosis (1)
- Chorioamnionitis (35)
- Choriocarcinoma (67)
- Chorioretinitis (12)
- Choristoma (11)
- Choroid Diseases (270)
- Choroid Hemorrhage (1)
- Choroid Neoplasms (5)
- Choroid Plexus Carcinoma (11)
- Choroid Plexus Neoplasms (85)
- Choroid Plexus Papilloma (1)
- Choroidal Effusions (5)
- Choroidal Neovascularization (274)
- Choroideremia (26)
- Choroiditis (47)
- Chromophil Renal Cell Carcinoma (50)
- Chromophobe Renal Cell Carcinoma (11)
- Chromosomal Instability (7)
- 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)
- Chromosome Aberrations (353)
- Chromosome Deletion (18)
- Chromosome Disorders (755)
- Chronic Active Epstein-Barr Virus Infection (6)
- Chronic Disease (1,043)
- Chronic Eosinophilic Pneumonia (1)
- Chronic Erosive Gastritis (1)
- Chronic Exertional Compartment Syndrome (8)
- Chronic Graft Versus Host Disease (29,076)
- Chronic Granulomatous Disease (74)
- Chronic Inflammatory Demyelinating Polyneuropathy (77)
- Chronic Intestinal Pseudoobstruction (5)
- Chronic Kidney Disease-Mineral and Bone Disorder (52)
- Chronic Lymphocytic Leukemia (1,987)
- Chronic Myeloid Leukemia (1,275)
- Chronic Myelomonocytic Leukemia (568)
- Chronic Myeloproliferative Disorders (1,941)
- Chronic Neutrophilic Leukemia (111)
- Chronic Pain (2,533)
- Chronic Periodontitis (388)
- Chronic Progressive External Ophthalmoplegia (7)
- Chronic Recurrent Multifocal Osteomyelitis (5)
- Chronic Thromboembolic Pulmonary Hypertension (111)
- Chronic Traumatic Encephalopathy (21)
- Chronic Urticaria (143)
- Chronobiology Disorders (177)
- Churg-Strauss Syndrome (46)
- Chylomicron Retention Disease (2)
- Chylothorax (10)
- Chylothorax, Congenital (1)
- Cicatrix (1,122)
- Cicatrix, Hypertrophic (105)
- Ciguatera Fish Poisoning (1)
- Ciguatera Poisoning (1)
- Ciliary Motility Disorders (56)
- Ciliopathies (271)
- Citrullinemia (12)
- Citrullinemia Type I (5)
- Citrullinemia Type II (1)
- Classic Galactosemia (12)
- Classical Ehlers-Danlos Syndrome (2)
- Classical Lissencephalies and Subcortical Band Heterotopias (1)
- Clear Cell Renal Cell Carcinoma (1,377)
- Cleft Lip (115)
- Cleft Palate (113)
- Cleidocranial Dysplasia (1)
- Clinical Deterioration (37)
- Cloacal Exstrophy (1)
- Clostridium Infections (469)
- Clubfoot (130)
- Cluster Headache (93)
- Coagulation Protein Disorders (858)
- Coal Worker's Pneumoconiosis (45)
- Coats Disease (9)
- Cocaine Antenatal Exposure (2)
- Cocaine-Related Disorders (406)
- Coccidioidomycosis (80)
- Coccidiosis (80)
- Coccygodynia (11)
- Cochlear Diseases (4)
- Cockayne Syndrome (10)
- Coenzyme Q10 Deficiency (4)
- Coffin-Lowry Syndrome (1)
- Cogan Syndrome (6)
- Cognition Disorders (3,034)
- Cognitive Dysfunction (3,296)
- Cohen Syndrome (1)
- Coinfection (256)
- Cold Agglutinin Disease (14)
- Cold Urticaria (16)
- Colic (192)
- Colitis (1,492)
- Colitis, Collagenous (8)
- Colitis, Ischemic (3)
- Colitis, Lymphocytic (7)
- Colitis, Microscopic (22)
- Colitis, Ulcerative (1,338)
- Collagen Diseases (8,973)
- Collagenous Sprue (1)
- Collecting Duct Carcinoma (12)
- Colles' Fracture (28)
- Colloid Cysts of Third Ventricle (1)
- Coloboma (9)
- Coloboma of Optic Nerve (2)
- Colonic Diseases (7,051)
- Colonic Diseases, Functional (858)
- Colonic Neoplasms (988)
- Colonic Polyps (346)
- Colonic Pseudo-Obstruction (6)
- Color Vision Defects (20)
- Colorectal Neoplasms (6,146)
- Colorectal Neoplasms, Hereditary Nonpolyposis (92)
- Coma (223)
- Coma, Post-Head Injury (4)
- Combat Disorders (44)
- Common Bile Duct Diseases (95)
- Common Bile Duct Neoplasms (4)
- Common Cold (170)
- Common Variable Immunodeficiency (53)
- Communicable Diseases (43,285)
- Communicable Diseases, Emerging (10)
- Communication Disorders (869)
- Community-Acquired Infections (32)
- Compartment Syndromes (106)
- Compassion Fatigue (21)
- Complement Component Deficiency (1)
- Complete Androgen Insensitivity Syndrome (2)
- Complete Atrioventricular Canal (6)
- Complex Regional Pain Syndromes (157)
- Composite Lymphoma (3)
- Compulsive Behavior (427)
- Compulsive Exercise (4)
- Compulsive Personality Disorder (513)
- Conduct Disorder (270)
- Condylomata Acuminata (98)
- Cone Dystrophy (32)
- Cone-Rod Dystrophies (18)
- Cone-rod Dystrophy 2 (16)
- Confusion (914)
- Congenital Abnormalities (7,498)
- Congenital Adrenal Hyperplasia (142)
- Congenital Amegakaryocytic Thrombocytopenia (9)
- Congenital Amputation (3)
- Congenital Aplastic Anemia (99)
- Congenital Bone Marrow Failure Syndromes (128)
- 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 Microtia (17)
- 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 Diseases (1,246)
- Conjunctival Melanoma (9)
- Conjunctival Neoplasms (6)
- Conjunctivitis (1,145)
- Conjunctivitis, Allergic (210)
- Conjunctivitis, Bacterial (77)
- Conjunctivitis, Inclusion (10)
- Conjunctivitis, Viral (16)
- Connective Tissue Diseases (6,296)
- Conotruncal Heart Malformations (3)
- Consciousness Disorders (499)
- Constipation (904)
- Constriction, Pathologic (3,067)
- Continuous Spike-wave During Slow Sleep Syndrome (7)
- Contracture (176)
- Contusions (73)
- Convalescence (28)
- Conversion Disorder (189)
- Coproporphyria, Hereditary (13)
- Corneal Diseases (1,527)
- Corneal Dystrophies, Hereditary (102)
- Corneal Edema (41)
- Corneal Endothelial Cell Loss (27)
- Corneal Endothelial Dystrophy Type 2 (11)
- Corneal Injuries (34)
- Corneal Neovascularization (26)
- Corneal Opacity (39)
- Corneal Perforation (4)
- Corneal Ulcer (58)
- Corneal Wavefront Aberration (6)
- Cornelia De Lange Syndrome (4)
- Coronary Aneurysm (25)
- Coronary Artery Aneurysm (25)
- Coronary Artery Disease (9,085)
- Coronary Disease (5,809)
- Coronary Occlusion (101)
- Coronary Restenosis (117)
- Coronary Stenosis (396)
- Coronary Thrombosis (22)
- Coronary Vasospasm (30)
- Coronary Vessel Anomalies (25)
- Coronaviridae Infections (7,133)
- Coronavirus Infections (7,357)
- Corpus Callosum Agenesis (15)
- Corticobasal Degeneration (40)
- Corticosteroid-sensitive Aseptic Abscesses (1)
- Corynebacterium Infections (247)
- Costello Syndrome (4)
- Cough (754)
- Cowden Syndrome (8)
- Coxsackievirus Infections (60)
- Cramp-fasciculation Syndrome (1)
- Cranial Nerve Diseases (1,081)
- Cranial Nerve Injuries (46)
- Craniocerebral Trauma (2,569)
- Cranioectodermal Dysplasia (1)
- Craniofacial Abnormalities (391)
- Craniofacial Dysostosis (25)
- Craniofacial Fibrous Dysplasia (1)
- Craniofacial Microsomia (10)
- Craniofrontonasal Dysplasia (1)
- Craniomandibular Disorders (308)
- Craniopharyngioma (109)
- Craniosynostoses (38)
- Creutzfeldt-Jakob Disease (8)
- Creutzfeldt-Jakob Syndrome (7)
- Cri-du-Chat Syndrome (1)
- Crigler Najjar Syndrome, Type 1 (13)
- Crigler-Najjar Syndrome (13)
- Critical Illness (2,214)
- Crohn Disease (1,534)
- Cross Infection (555)
- Croup (34)
- Crouzon Syndrome (45)
- Crush Injuries (134)
- Crush Syndrome (1)
- Crusted Scabies (1)
- Cryoglobulinemia (14)
- Cryoglobulinemic Vasculitis (10)
- Cryopyrin-Associated Periodic Syndromes (31)
- Cryptococcosis (66)
- Cryptogenic Organizing Pneumonia (3)
- Cryptorchidism (29)
- Cryptosporidiosis (28)
- Crystal Arthropathies (227)
- Cubital Tunnel Syndrome (24)
- Cumulative Trauma Disorders (419)
- Currarino Triad (1)
- Cushing Syndrome (103)
- Cutaneous Fistula (5)
- 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)
- Cyanosis (11)
- Cyberbullying (11)
- Cyclothymic Disorder (6)
- Cystadenocarcinoma (262)
- Cystadenocarcinoma, Mucinous (56)
- Cystadenocarcinoma, Serous (235)
- Cystadenoma (9)
- Cystadenoma, Mucinous (5)
- Cystadenoma, Serous (5)
- Cystic Adenomatoid Malformation of Lung (4)
- Cystic Adenomatoid Malformation of Lung, Congenital (4)
- Cystic Fibrosis (1,404)
- Cysticercosis (28)
- Cystinosis (34)
- Cystinuria (23)
- Cystitis (282)
- Cystitis, Interstitial (194)
- Cystocele (67)
- Cysts (1,281)
- Cytokine Release Syndrome (120)
- Cytomegalic Inclusion Disease (386)
- Cytomegalovirus Infections (386)
- Cytomegalovirus Retinitis (64)