Clinical Trials on Spherocytosis, Hereditary

Total 2638 results

Children's Hospital of Philadelphia
Illumina, Inc.

Active, not recruiting

LeukoSEQ: Whole Genome Sequencing as a First-Line Diagnostic Tool for Leukodystrophies

Mucopolysaccharidoses | Leukodystrophy | Adrenoleukodystrophy | Adrenomyeloneuropathy | X-linked Adrenoleukodystrophy | Gangliosidoses | Metachromatic Leukodystrophy | Krabbe Disease | Refsum Disease | Cadasil | Sjogren-Larsson Syndrome | Allan-Herndon-Dudley Syndrome | White Matter Disease | GM2 Gangliosidosis | Zellweger... and other conditions

United States
University of Pittsburgh

Recruiting

Longitudinal Study of Neurodegenerative Disorders

Lysosomal Storage Diseases | Leukodystrophy | Niemann-Pick Diseases | Batten Disease | Gaucher Disease | Krabbe Disease | Alpha-Mannosidosis | Osteopetrosis | Tay-Sachs Disease | Pelizaeus-Merzbacher Disease | Sandhoff Disease | GM1 Gangliosidoses | MPS I | MPS II | Vanishing White Matter Disease | Multiple Sulfatase Deficiency... and other conditions

United States
RTI International
University of North Carolina, Chapel Hill

Enrolling by invitation

Parent and Infant Inter(X)Action Intervention (PIXI)

Tuberous Sclerosis | Down Syndrome | Duchenne Muscular Dystrophy | Prader-Willi Syndrome | Fragile X Syndrome | Rett Syndrome | Turner Syndrome | Williams Syndrome | Angelman Syndrome | Chromosome 22q11.2 Deletion Syndrome | Klinefelter Syndrome | Phelan-McDermid Syndrome | Dup15Q Syndrome | Smith Magenis Syndrome

United States
Talaris Therapeutics Inc.
Duke University

Terminated

Phase I/II Pilot Study of Mixed Chimerism to Treat Inherited Metabolic Disorders

Niemann-Pick Disease | Alpha-mannosidosis | Tay Sachs Disease | Sandhoff Disease | Metachromatic Leukodystrophy (MLD) | Hurler-Scheie Syndrome | Hurler Syndrome (MPS I) | Hunter Syndrome (MPS II) | Sanfilippo Syndrome (MPS III) | Krabbe Disease (Globoid Leukodystrophy) | Adrenoleukodystrophy (ALD and AMN) | Pelizaeus...

United States
Children's Hospitals and Clinics of Minnesota
M.D. Anderson Cancer Center; Washington University School of Medicine; Dana-Farber... and other collaborators

Recruiting

International PPB/DICER1 Registry

Neuroblastoma | Thyroid Carcinoma | Pineoblastoma | Wilms Tumor | Embryonal Rhabdomyosarcoma | Ovarian Sarcoma | Sertoli-Leydig Cell Tumor | Pleuropulmonary Blastoma | Gynandroblastoma | DICER1 Syndrome | Cystic Nephroma | Renal Sarcoma | Nodular Hyperplasia of Thyroid | Nasal Chondromesenchymal Hamartoma | Ciliary Body... and other conditions

United States
RTI International
Eunice Kennedy Shriver National Institute of Child Health and Human Development... and other collaborators

Enrolling by invitation

Early Check: Expanded Screening in Newborns

Primary Hyperoxaluria Type 3 | Diabetes Mellitus | Hemophilia A | Hemophilia B | Hereditary Fructose Intolerance | Cystic Fibrosis | Factor VII Deficiency | Phenylketonurias | Sickle Cell Disease | Dravet Syndrome | Duchenne Muscular Dystrophy | Prader-Willi Syndrome | Fragile X Syndrome | Chronic Granulomatous Disease and other conditions

United States
University of Florida
Live Like Bella Pediatric Cancer Research

Completed

Conditioning Regimen for Allogeneic Hematopoietic Stem-Cell Transplantation

Common Variable Immunodeficiency | Severe Combined Immunodeficiency | Sickle Cell Disease | Hurler Syndrome | Chronic Granulomatous Disease | Thalassemia | Wiskott-Aldrich Syndrome | Adrenoleukodystrophy | X-linked Lymphoproliferative Disease | Diamond Blackfan Anemia | Bone Marrow Failure Syndrome | Hemophagocytic... and other conditions

United States
Children's Oncology Group
National Cancer Institute (NCI)

Recruiting

Tegavivint for the Treatment of Recurrent or Refractory Solid Tumors, Including Lymphomas and Desmoid Tumors

Melanoma | Neuroblastoma | Pancreatic Ductal Adenocarcinoma | Refractory Malignant Solid Neoplasm | Endometrial Carcinoma | Recurrent Ewing Sarcoma | Recurrent Hepatoblastoma | Recurrent Malignant Solid Neoplasm | Recurrent Non-Hodgkin Lymphoma | Recurrent Osteosarcoma | Refractory Ewing Sarcoma | Refractory... and other conditions

United States
National Cancer Institute (NCI)

Active, not recruiting

Vemurafenib in Treating Patients With Relapsed or Refractory Advanced Solid Tumors, Non-Hodgkin Lymphoma, or Histiocytic Disorders With BRAF V600 Mutations (A Pediatric MATCH Treatment Trial)

Soft Tissue Sarcoma | Osteosarcoma | Ewing Sarcoma | Malignant Glioma | Ependymoma | Rhabdoid Tumor | Advanced Malignant Solid Neoplasm | Refractory Malignant Solid Neoplasm | Rhabdomyosarcoma | Recurrent Malignant Solid Neoplasm | Recurrent Neuroblastoma | Refractory Neuroblastoma | Refractory Non-Hodgkin Lymphoma and other conditions

United States, Puerto Rico
National Cancer Institute (NCI)

Active, not recruiting

Palbociclib in Treating Patients With Relapsed or Refractory Rb Positive Advanced Solid Tumors, Non-Hodgkin Lymphoma, or Histiocytic Disorders With Activating Alterations in Cell Cycle Genes (A Pediatric MATCH Treatment Trial)

Recurrent Childhood Ependymoma | Advanced Malignant Solid Neoplasm | Recurrent Ewing Sarcoma | Recurrent Hepatoblastoma | Recurrent Langerhans Cell Histiocytosis | Recurrent Malignant Germ Cell Tumor | Recurrent Malignant Glioma | Recurrent Medulloblastoma | Recurrent Neuroblastoma | Recurrent Non-Hodgkin... and other conditions

United States, Puerto Rico
National Cancer Institute (NCI)
Children's Oncology Group

Active, not recruiting

Ivosidenib in Treating Patients With Advanced Solid Tumors, Lymphoma, or Histiocytic Disorders With IDH1 Mutations (A Pediatric MATCH Treatment Trial)

Refractory Malignant Solid Neoplasm | Recurrent Ependymoma | Recurrent Ewing Sarcoma | Recurrent Hepatoblastoma | Recurrent Langerhans Cell Histiocytosis | Recurrent Malignant Germ Cell Tumor | Recurrent Malignant Glioma | Recurrent Malignant Solid Neoplasm | Recurrent Medulloblastoma | Recurrent Neuroblastoma and other conditions

United States, Puerto Rico, Australia
New York Medical College

Completed

Human Placental-Derived Stem Cell Transplantation (HPDSC)

Mucopolysaccharidosis I | Myelodysplastic Syndrome | Acute Lymphocytic Leukemia | Acute Myelogenous Leukemia | Niemann-Pick Disease | Mucopolysaccharidosis VI | Wolman Disease | Adrenoleukodystrophy | Batten Disease | Metachromatic Leukodystrophy | Diamond-Blackfan Anemia | Severe Aplastic Anemia | Fucosidosis | Gaucher... and other conditions

United States
National Cancer Institute (NCI)
Children's Oncology Group

Active, not recruiting

Selpercatinib for the Treatment of Advanced Solid Tumors, Lymphomas, or Histiocytic Disorders With Activating RET Gene Alterations, a Pediatric MATCH Treatment Trial

Refractory Lymphoma | Refractory Malignant Solid Neoplasm | Recurrent Ependymoma | Recurrent Ewing Sarcoma | Recurrent Hepatoblastoma | Recurrent Histiocytic and Dendritic Cell Neoplasm | Recurrent Langerhans Cell Histiocytosis | Recurrent Lymphoma | Recurrent Malignant Germ Cell Tumor | Recurrent Malignant... and other conditions

United States, Puerto Rico, Australia
Vanderbilt-Ingram Cancer Center
National Cancer Institute (NCI)

Withdrawn

Veliparib, Capecitabine, and Temozolomide in Patients With Advanced, Metastatic, and Recurrent Neuroendocrine Tumor

Merkel Cell Carcinoma | Neuroendocrine Neoplasm | Metastatic Carcinoid Tumor | Functional Pancreatic Neuroendocrine Tumor | Malignant Somatostatinoma | Metastatic Adrenal Gland Pheochromocytoma | Multiple Endocrine Neoplasia Type 1 | Multiple Endocrine Neoplasia Type 2A | Multiple Endocrine Neoplasia... and other conditions
National Cancer Institute (NCI)
Children's Oncology Group

Recruiting

Ensartinib in Treating Patients With Relapsed or Refractory Advanced Solid Tumors, Non-Hodgkin Lymphoma, or Histiocytic Disorders With ALK or ROS1 Genomic Alterations (A Pediatric MATCH Treatment Trial)

Malignant Solid Neoplasm | Advanced Malignant Solid Neoplasm | Refractory Malignant Solid Neoplasm | Recurrent Ependymoma | Recurrent Hepatoblastoma | Recurrent Langerhans Cell Histiocytosis | Recurrent Malignant Germ Cell Tumor | Recurrent Malignant Glioma | Recurrent Malignant Solid Neoplasm | Recurrent... and other conditions

United States, Puerto Rico, Australia
National Cancer Institute (NCI)

Active, not recruiting

Erdafitinib in Treating Patients With Relapsed or Refractory Advanced Solid Tumors, Non-Hodgkin Lymphoma, or Histiocytic Disorders With FGFR Mutations (A Pediatric MATCH Treatment Trial)

Recurrent Childhood Medulloblastoma | Recurrent Childhood Ependymoma | Advanced Malignant Solid Neoplasm | Refractory Malignant Solid Neoplasm | Recurrent Hepatoblastoma | Recurrent Langerhans Cell Histiocytosis | Recurrent Malignant Glioma | Recurrent Malignant Solid Neoplasm | Recurrent Neuroblastoma and other conditions

United States, Puerto Rico
National Cancer Institute (NCI)

Active, not recruiting

Olaparib in Treating Patients With Relapsed or Refractory Advanced Solid Tumors, Non-Hodgkin Lymphoma, or Histiocytic Disorders With Defects in DNA Damage Repair Genes (A Pediatric MATCH Treatment Trial)

Malignant Glioma | Recurrent Childhood Ependymoma | Rhabdoid Tumor | Advanced Malignant Solid Neoplasm | Refractory Malignant Solid Neoplasm | Recurrent Hepatoblastoma | Recurrent Langerhans Cell Histiocytosis | Recurrent Malignant Solid Neoplasm | Recurrent Medulloblastoma | Recurrent Neuroblastoma | Recurrent... and other conditions

United States, Puerto Rico
Assistance Publique - Hôpitaux de Paris

Not yet recruiting

Development of Non-Invasive Prenatal Diagnosis for Single Gene Disorders (DANNIgene)

Hemophilia A | Hemophilia B | Cystic Fibrosis | Sickle Cell Disease | Muscular Dystrophy, Duchenne | Fragile X Syndrome | Huntington Disease | Myotonic Dystrophy | Autosomal Recessive Polycystic Kidney Disease | Neurofibromatosis-Noonan Syndrome | Muscular Dystrophy, Becker | Invasive PreNatal Diagnosis in a... and other conditions

France
National Cancer Institute (NCI)

Active, not recruiting

Ulixertinib in Treating Patients With Advanced Solid Tumors, Non-Hodgkin Lymphoma, or Histiocytic Disorders With MAPK Pathway Mutations (A Pediatric MATCH Treatment Trial)

Advanced Malignant Solid Neoplasm | Refractory Malignant Solid Neoplasm | Recurrent Ewing Sarcoma | Recurrent Hepatoblastoma | Recurrent Histiocytic and Dendritic Cell Neoplasm | Recurrent Langerhans Cell Histiocytosis | Recurrent Malignant Germ Cell Tumor | Recurrent Malignant Solid Neoplasm | Recurrent... and other conditions

United States, Puerto Rico
National Cancer Institute (NCI)

Active, not recruiting

Larotrectinib in Treating Patients With Relapsed or Refractory Advanced Solid Tumors, Non-Hodgkin Lymphoma, or Histiocytic Disorders With NTRK Fusions (A Pediatric MATCH Treatment Trial)

Advanced Malignant Solid Neoplasm | Refractory Malignant Solid Neoplasm | Recurrent Ependymoma | Recurrent Hepatoblastoma | Recurrent Langerhans Cell Histiocytosis | Recurrent Malignant Germ Cell Tumor | Recurrent Malignant Glioma | Recurrent Malignant Solid Neoplasm | Recurrent Medulloblastoma | Recurrent... and other conditions

United States, Puerto Rico
National Cancer Institute (NCI)

Active, not recruiting

Samotolisib in Treating Patients With Relapsed or Refractory Advanced Solid Tumors, Non-Hodgkin Lymphoma, or Histiocytic Disorders With TSC or PI3K/MTOR Mutations (A Pediatric MATCH Treatment Trial)

Malignant Glioma | Rhabdoid Tumor | Advanced Malignant Solid Neoplasm | Refractory Malignant Solid Neoplasm | Recurrent Ependymoma | Recurrent Ewing Sarcoma | Recurrent Hepatoblastoma | Recurrent Langerhans Cell Histiocytosis | Recurrent Malignant Germ Cell Tumor | Recurrent Malignant Solid Neoplasm | Recurrent... and other conditions

United States, Puerto Rico
Sanguine Biosciences

Completed

At-Home Research Study for Patients With Autoimmune, Inflammatory, Genetic, Hematological, Infectious, Neurological, CNS, Oncological, Respiratory, Metabolic Conditions

Depression | Melanoma | Epilepsy | Lymphoma | Multiple Sclerosis | Kidney Cancer | Cervical Cancer | Diabetes Mellitus | Leukemia | Breast Cancer | Chronic Kidney Diseases | Chronic Obstructive Pulmonary Disease | Parkinson's Disease | Systemic Lupus Erythematosus | Multiple Myeloma | Hepatitis B | Insomnia | Colorectal Cancer | HIV/AID... and other conditions

United States
National Cancer Institute (NCI)
Children's Oncology Group

Active, not recruiting

Tazemetostat in Treating Patients With Relapsed or Refractory Advanced Solid Tumors, Non-Hodgkin Lymphoma, or Histiocytic Disorders With EZH2, SMARCB1, or SMARCA4 Gene Mutations (A Pediatric MATCH Treatment Trial)

Recurrent Hodgkin Lymphoma | Refractory Hodgkin Lymphoma | Rhabdoid Tumor | Advanced Malignant Solid Neoplasm | Refractory Malignant Solid Neoplasm | Ann Arbor Stage III Hodgkin Lymphoma | Ann Arbor Stage IV Hodgkin Lymphoma | Recurrent Ependymoma | Recurrent Ewing Sarcoma | Recurrent Hepatoblastoma | Recurrent... and other conditions

United States, Puerto Rico
National Cancer Institute (NCI)

Active, not recruiting

Tipifarnib for the Treatment of Advanced Solid Tumors, Lymphoma, or Histiocytic Disorders With HRAS Gene Alterations, a Pediatric MATCH Treatment Trial

Malignant Solid Neoplasm | Recurrent Melanoma | Recurrent Ependymoma | Recurrent Ewing Sarcoma | Recurrent Hepatoblastoma | Recurrent Langerhans Cell Histiocytosis | Recurrent Malignant Germ Cell Tumor | Recurrent Malignant Glioma | Recurrent Medulloblastoma | Recurrent Neuroblastoma | Recurrent Non-Hodgkin... and other conditions

United States, Puerto Rico
University of Colorado, Denver
National Institute on Aging (NIA)

Completed

Advancing Understanding of Transportation Options (AUTO)

Stroke | Multiple Sclerosis | Glaucoma | Brain Injuries | Macular Degeneration | Arthritis | Chronic Obstructive Pulmonary Disease | Parkinson Disease | Restless Legs Syndrome | Diabetic Retinopathy | Insomnia | Retinitis Pigmentosa | Obstructive Sleep Apnea | Dementia | End Stage Renal Disease | Sleep Apnea | Syncope | Seizures and other conditions

United States
National Cancer Institute (NCI)

Recruiting

Targeted Therapy Directed by Genetic Testing in Treating Pediatric Patients With Relapsed or Refractory Advanced Solid Tumors, Non-Hodgkin Lymphomas, or Histiocytic Disorders (The Pediatric MATCH Screening Trial)

Malignant Glioma | Rhabdoid Tumor | Advanced Malignant Solid Neoplasm | Refractory Malignant Solid Neoplasm | Recurrent Ependymoma | Recurrent Ewing Sarcoma | Recurrent Hepatoblastoma | Recurrent Langerhans Cell Histiocytosis | Recurrent Malignant Germ Cell Tumor | Recurrent Malignant Solid Neoplasm | Recurrent... and other conditions

United States, Puerto Rico, Australia, Canada
National Cancer Institute (NCI)

Active, not recruiting

Cabozantinib-S-Malate in Treating Younger Patients With Recurrent, Refractory, or Newly Diagnosed Sarcomas, Wilms Tumor, or Other Rare Tumors

Soft Tissue Sarcoma | Renal Cell Carcinoma | Hepatocellular Carcinoma | Osteosarcoma | Ewing Sarcoma | Recurrent Renal Cell Carcinoma | Refractory Malignant Solid Neoplasm | Rhabdomyosarcoma | Recurrent Ewing Sarcoma | Recurrent Hepatoblastoma | Recurrent Malignant Solid Neoplasm | Recurrent Osteosarcoma | Recurrent... and other conditions

United States
Children's Oncology Group
National Cancer Institute (NCI)

Completed

Etanercept in Treating Young Patients With Idiopathic Pneumonia Syndrome After Undergoing a Donor Stem Cell Transplant

Juvenile Myelomonocytic Leukemia | Secondary Acute Myeloid Leukemia | Childhood Acute Myeloid Leukemia in Remission | Accelerated Phase Chronic Myelogenous Leukemia | Childhood Acute Lymphoblastic Leukemia in Remission | Childhood Chronic Myelogenous Leukemia | Childhood Myelodysplastic Syndromes and other conditions

United States
M.D. Anderson Cancer Center
National Cancer Institute (NCI)

Active, not recruiting

Bevacizumab and Temsirolimus Alone or in Combination With Valproic Acid or Cetuximab in Treating Patients With Advanced or Metastatic Malignancy or Other Benign Disease

Castleman Disease | Lymphangioleiomyomatosis | Digestive System Carcinoma | Malignant Neoplasm | Recurrent Breast Carcinoma | Recurrent Thyroid Gland Carcinoma | Metastatic Urothelial Carcinoma | Malignant Female Reproductive System Neoplasm | Neurofibromatosis Type 2 | Recurrent Adult Soft Tissue Sarcoma and other conditions

United States
City of Hope Medical Center

Active, not recruiting

Busulfan, Melphalan, Topotecan Hydrochloride, and a Stem Cell Transplant in Treating Patients With Newly Diagnosed or Relapsed Solid Tumor

Unspecified Childhood Solid Tumor, Protocol Specific | Solid Tumor | Ewing Sarcoma | Unspecified Adult Solid Tumor, Protocol Specific | Recurrent Childhood Medulloblastoma | Recurrent Childhood Ependymoma | Recurrent Neuroblastoma | Recurrent Adult Soft Tissue Sarcoma | Recurrent Adult Brain Tumor | Recurrent... and other conditions

United States
Children's Oncology Group
National Cancer Institute (NCI)

Completed

Supersaturated Calcium Phosphate Rinse in Preventing Oral Mucositis in Young Patients Undergoing Autologous or Donor Stem Cell Transplant

Unspecified Childhood Solid Tumor, Protocol Specific | Chronic Myelomonocytic Leukemia | Juvenile Myelomonocytic Leukemia | Secondary Acute Myeloid Leukemia | Childhood Acute Myeloid Leukemia in Remission | Mucositis | Childhood Acute Lymphoblastic Leukemia in Remission | Childhood Chronic Myelogenous... and other conditions

United States, Canada, Australia
Sanguine Biosciences

Recruiting

Tissue Repository Providing Annotated Biospecimens for Approved Investigator-directed Biomedical Research Initiatives

Heart Diseases | Stroke | Lymphoma | Multiple Sclerosis | Kidney Diseases | Diabetes | Leukemia | Age-Related Macular Degeneration | Cancer | Arthritis | Schizophrenia | Thyroid Diseases | Parkinson Disease | Hepatitis | Vasculitis | Psoriasis | Asthma | Amyloidosis | Fibromyalgia | Graves Disease | Alzheimer Disease | Celiac Disease | Cirr... and other conditions

United States
Hereditary Neuropathy Foundation

Recruiting

Natural History Study for Charcot Marie Tooth Disease

Charcot-Marie-Tooth Disease | Charcot-Marie-Tooth Disease, Type IA | Charcot-Marie-Tooth Disease Type 2A | Charcot-Marie-Tooth | Charcot-Marie-Tooth Disease, Type IB | Charcot-Marie-Tooth Disease Type 2 | Charcot-Marie-Tooth Disease, Type 2C | Charcot-Marie-Tooth Disease Type 2A2B | Charcot-Marie-Tooth... and other conditions

United States
National Cancer Institute (NCI)

Completed

Oxaliplatin and Irinotecan in Treating Young Patients With Refractory Solid Tumors or Lymphomas

Unspecified Childhood Solid Tumor, Protocol Specific | Recurrent Childhood Medulloblastoma | Recurrent Childhood Ependymoma | Recurrent Melanoma | Recurrent Neuroblastoma | Recurrent Osteosarcoma | Recurrent Childhood Rhabdomyosarcoma | Recurrent Colon Cancer | Recurrent Wilms Tumor and Other Childhood... and other conditions

United States
University of Southern California
Wyeth is now a wholly owned subsidiary of Pfizer

Completed

Temsirolimus and Vinorelbine Ditartrate in Treating Patients With Unresectable or Metastatic Solid Tumors

Recurrent Prostate Cancer | Stage III Renal Cell Cancer | Recurrent Endometrial Carcinoma | Male Breast Cancer | Stage IV Breast Cancer | Stage IV Ovarian Epithelial Cancer | Stage IV Ovarian Germ Cell Tumor | Stage IIIA Non-small Cell Lung Cancer | Stage IIIB Non-small Cell Lung Cancer | Stage IIIA Breast... and other conditions

United States
Cure CMD

Recruiting

Congenital Muscle Disease Study of Patient and Family Reported Medical Information (CMDPROS)

Emery-Dreifuss Muscular Dystrophy | Congenital Myasthenic Syndrome | Limb-Girdle Muscular Dystrophy | Congenital Muscular Dystrophy With ITGA7 (Integrin Alpha-7) Deficiency | Alpha-Dystroglycanopathy (Congenital Muscular Dystrophy and Abnormal Glycosylation of Dystroglycan With Severe Epilepsy) and other conditions

United States
Taproot Health

Recruiting

The Registry of Oncology Outcomes Associated With Testing and Treatment (ROOT)

Melanoma | Sarcoma | Kidney Cancer | Adenocarcinoma | Renal Cell Carcinoma | Cervical Cancer | Acute Myeloid Leukemia | Stomach Cancer | Breast Cancer | Head and Neck Neoplasms | Nasopharyngeal Carcinoma | Glioblastoma | Astrocytoma | Multiple Myeloma | Colorectal Cancer | Pancreatic Cancer | Esophageal Cancer | Small Bowel Cancer and other conditions

United States
Fred Hutchinson Cancer Center
National Cancer Institute (NCI)

Completed

Lithium Carbonate in Treating Patients With Acute Intestinal Graft-Versus-Host-Disease (GVHD) After Donor Stem Cell Transplant (GVHD)

Primary Myelofibrosis | Stage I Multiple Myeloma | Stage II Multiple Myeloma | Stage III Multiple Myeloma | Chronic Myelomonocytic Leukemia | Recurrent Adult Acute Myeloid Leukemia | Juvenile Myelomonocytic Leukemia | Extranodal Marginal Zone B-cell Lymphoma of Mucosa-associated Lymphoid Tissue | Nodal... and other conditions

United States

Clinical Trials on Spherocytosis, Hereditary

Sponsors and Collaborators

Medical Conditions

Drug Interventions

CROs by country

CROs in Moldova

Conditions

Rare Diseases

Drug Interventions

Dietary Supplements

Sponsor/Collaborators

Locations