Clinical Trials Involving Rare Diseases: H
- HELLP Syndrome (28)
- HIVEP2-related Intellectual Disability (1)
- HMG CoA Lyase Deficiency (2)
- HTLV-1 Associated Myelopathy/tropical Spastic Paraparesis (25)
- Haemophilus Influenzae (205)
- Hailey-Hailey Disease (4)
- Hairy Cell Leukemia (227)
- Hansen's Disease (39)
- Hantavirus Pulmonary Syndrome (16)
- Hashimoto Encephalopathy (43)
- Heart Tumor (12)
- Heavy Metal Poisoning (47)
- Helminthiasis (320)
- Hemangioblastoma (15)
- Hemangioendothelioma (26)
- Hemangioma Thrombocytopenia Syndrome (9)
- Hemangiopericytoma (75)
- Hemicrania Continua (3)
- Hemifacial Microsomia (6)
- Hemihypertrophy (1)
- Hemimegalencephaly (2)
- Hemochromatosis Type 3 (83)
- Hemochromatosis Type 4 (1)
- Hemoglobin C Disease (7)
- Hemoglobin SC Disease (32)
- Hemolytic Uremic Syndrome (63)
- Hemophilia (818)
- Hemophilia A (786)
- Hemophilia B (248)
- Hemophilic Arthropathy (33)
- Hemosiderosis (83)
- Henoch-Schonlein Purpura (35)
- Heparin-induced Thrombocytopenia (47)
- Hepatic Encephalopathy (193)
- Hepatic Veno-occlusive Disease (22)
- Hepatitis D (72)
- Hepatitis E (33)
- Hepatoblastoma (73)
- Hepatopulmonary Syndrome (15)
- Hepatorenal Syndrome (51)
- Hereditary Amyloidosis (12)
- Hereditary Angioedema (140)
- Hereditary Antithrombin Deficiency (15)
- Hereditary Antithrombin Deficiency Type 2 (1)
- Hereditary Ataxia (10)
- Hereditary Cerebral Hemorrhage With Amyloidosis (27)
- Hereditary Coproporphyria (14)
- Hereditary Diffuse Gastric Cancer (8)
- Hereditary Diffuse Leukoencephalopathy With Spheroids (5)
- Hereditary Elliptocytosis (1)
- Hereditary Fructose Intolerance (12)
- Hereditary Hemorrhagic Telangiectasia (84)
- Hereditary Hyperekplexia (1)
- Hereditary Leiomyomatosis and Renal Cell Cancer (9)
- Hereditary Melanoma (2)
- Hereditary Methemoglobinemia (1)
- Hereditary Motor and Sensory Neuropathy (599)
- Hereditary Multiple Osteochondromas (5)
- Hereditary Neuropathy With Liability to Pressure Palsies (599)
- Hereditary Pancreatitis (9)
- Hereditary Paraganglioma-pheochromocytoma (1)
- Hereditary Renal Cell Carcinoma (2)
- Hereditary Sensory Neuropathy Type 1 (1)
- Hereditary Sensory and Autonomic Neuropathy (15)
- Hereditary Spastic Paraplegia (29)
- Hereditary Spherocytosis (5)
- Hermansky-Pudlak Syndrome (10)
- Herpes Simiae (B Virus) (465)
- Herpes Simplex Encephalitis (4)
- Herpes Zoster Ophthalmicus (2)
- Herpes Zoster Oticus (2)
- Heterotaxy (6)
- Hidradenocarcinoma (1)
- Hirschsprung Disease (51)
- His Bundle Tachycardia (2)
- Hodgkin Lymphoma (1,417)
- Holocarboxylase Synthetase Deficiency (5)
- Holoprosencephaly (5)
- Homocysteinemia (4)
- Homocystinuria (15)
- Homocystinuria Due to CBS Deficiency (4)
- Homologous Wasting Disease (1,035)
- Horizontal Gaze Palsy With Progressive Scoliosis (2)
- Horner's Syndrome (6)
- Hoyeraal Hreidarsson Syndrome (1)
- Human HOXA1 Syndromes (1)
- Human T-cell Leukemia Virus Type 1 (54)
- Human T-cell Leukemia Virus Type 2 (6)
- Huntington Disease (239)
- Hurler Syndrome (62)
- Hurler–Scheie Syndrome (20)
- Hurthle Cell Thyroid Cancer (7)
- Hyaline Fibromatosis Syndrome (1)
- Hydatidiform Mole (16)
- Hydatidosis (25)
- Hydroa Vacciniforme (2)
- Hydrops Fetalis (10)
- Hyper IgE Syndrome (13)
- Hyper-IgD Syndrome (3)
- Hyperacusis (18)
- Hyperadrenalism (274)
- Hypereosinophilic Syndrome (159)
- Hyperinsulinism-hyperammonemia Syndrome (2)
- Hyperkalemic Periodic Paralysis (3)
- Hyperlipidemia Type 3 (6)
- Hyperlipoproteinemia Type 4 (1)
- Hyperlipoproteinemia Type 5 (12)
- Hypermobile Ehlers-Danlos Syndrome (17)
- Hyperprolinemia (1)
- Hypersensitivity Pneumonitis (34)
- Hypersensitivity Vasculitis (2)
- Hypertrophic Olivary Degeneration (1)
- Hypoaldosteronism (9)
- Hypochondroplasia (5)
- Hypocomplementemic Urticarial Vasculitis (7)
- Hypoganglionosis (3)
- Hypohidrotic Ectodermal Dysplasia (20)
- Hypokalemic Periodic Paralysis (3)
- Hypolipoproteinemia (28)
- Hypomelanotic Disorder (250)
- Hypoparathyroidism (143)
- Hypopharyngeal Cancer (388)
- Hypophosphatasia (37)
- Hypophosphatemic Rickets (59)
- Hypopituitarism (187)
- Hypoplastic Left Heart Syndrome (62)
- Hypoplastic Right Heart Syndrome (3)
- Hypothalamic Obesity (15)
- Hypotrichosis Simplex (1)
- Hypoxanthine Guanine Phosphoribosyltransferase Deficiency (5)