Clinical Trials Involving Rare Diseases: H
- HELLP Syndrome (26)
- HIVEP2-related Intellectual Disability (1)
- HTLV-1 Associated Myelopathy/tropical Spastic Paraparesis (11)
- Haemophilus Influenzae (198)
- Hailey-Hailey Disease (3)
- Hairy Cell Leukemia (223)
- Hansen's Disease (31)
- Hantavirus Pulmonary Syndrome (14)
- Hashimoto Encephalopathy (23)
- Heart Tumor (10)
- Heavy Metal Poisoning (44)
- Helminthiasis (276)
- Hemangioblastoma (13)
- Hemangioendothelioma (22)
- Hemangioma Thrombocytopenia Syndrome (7)
- Hemangiopericytoma (60)
- Hemicrania Continua (3)
- Hemifacial Microsomia (5)
- Hemihypertrophy (2)
- Hemimegalencephaly (2)
- Hemochromatosis Type 3 (50)
- Hemochromatosis Type 4 (1)
- Hemoglobin C Disease (7)
- Hemoglobin SC Disease (32)
- Hemolytic Uremic Syndrome (49)
- Hemophilia (691)
- Hemophilia A (668)
- Hemophilia B (207)
- Hemophilic Arthropathy (25)
- Hemosiderosis (28)
- Henoch-Schonlein Purpura (26)
- Heparin-induced Thrombocytopenia (42)
- Hepatic Encephalopathy (162)
- Hepatic Veno-occlusive Disease (20)
- Hepatitis D (46)
- Hepatitis E (29)
- Hepatoblastoma (60)
- Hepatopulmonary Syndrome (12)
- Hepatorenal Syndrome (41)
- Hereditary Amyloidosis (8)
- Hereditary Angioedema (107)
- Hereditary Antithrombin Deficiency (11)
- Hereditary Antithrombin Deficiency Type 2 (1)
- Hereditary Ataxia (7)
- Hereditary Cerebral Hemorrhage With Amyloidosis (17)
- Hereditary Coproporphyria (10)
- Hereditary Diffuse Gastric Cancer (7)
- Hereditary Elliptocytosis (1)
- Hereditary Fructose Intolerance (9)
- Hereditary Hemorrhagic Telangiectasia (70)
- Hereditary Leiomyomatosis and Renal Cell Cancer (6)
- Hereditary Melanoma (2)
- Hereditary Methemoglobinemia (1)
- Hereditary Motor and Sensory Neuropathy (407)
- Hereditary Multiple Osteochondromas (5)
- Hereditary Neuropathy With Liability to Pressure Palsies (407)
- Hereditary Pancreatitis (9)
- Hereditary Paraganglioma-pheochromocytoma (1)
- Hereditary Sensory Neuropathy Type 1 (1)
- Hereditary Sensory and Autonomic Neuropathy (15)
- Hereditary Spastic Paraplegia (18)
- Hereditary Spherocytosis (5)
- Hermansky-Pudlak Syndrome (9)
- Herpes Simiae (B Virus) (400)
- Herpes Simplex Encephalitis (3)
- Herpes Zoster Ophthalmicus (2)
- Herpes Zoster Oticus (1)
- Heterotaxy (6)
- Hidradenocarcinoma (1)
- Hirschsprung Disease (40)
- His Bundle Tachycardia (1)
- Hodgkin Lymphoma (1,306)
- Holoprosencephaly (5)
- Homocystinuria (9)
- Homocystinuria Due to CBS Deficiency (3)
- Homologous Wasting Disease (834)
- 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 (50)
- Human T-cell Leukemia Virus Type 2 (6)
- Huntington Disease (202)
- Hurler Syndrome (56)
- Hurler–Scheie Syndrome (17)
- Hurthle Cell Thyroid Cancer (6)
- Hyaline Fibromatosis Syndrome (1)
- Hydatidiform Mole (13)
- Hydatidosis (15)
- Hydrops Fetalis (8)
- Hyper IgE Syndrome (11)
- Hyper-IgD Syndrome (3)
- Hyperacusis (15)
- Hyperadrenalism (208)
- Hypereosinophilic Syndrome (128)
- Hyperinsulinism-hyperammonemia Syndrome (1)
- Hyperkalemic Periodic Paralysis (2)
- Hyperlipidemia Type 3 (5)
- Hyperlipoproteinemia Type 4 (1)
- Hyperlipoproteinemia Type 5 (10)
- Hypermobile Ehlers-Danlos Syndrome (5)
- Hyperprolinemia (1)
- Hypersensitivity Pneumonitis (20)
- Hypersensitivity Vasculitis (2)
- Hypoaldosteronism (7)
- Hypochondroplasia (4)
- Hypocomplementemic Urticarial Vasculitis (7)
- Hypoganglionosis (2)
- Hypohidrotic Ectodermal Dysplasia (18)
- Hypokalemic Periodic Paralysis (3)
- Hypolipoproteinemia (25)
- Hypoparathyroidism (110)
- Hypopharyngeal Cancer (363)
- Hypophosphatasia (29)
- Hypophosphatemic Rickets (51)
- Hypopituitarism (168)
- Hypoplastic Left Heart Syndrome (58)
- Hypoplastic Right Heart Syndrome (3)
- Hypothalamic Obesity (12)
- Hypotrichosis Simplex (1)
- Hypoxanthine Guanine Phosphoribosyltransferase Deficiency (4)