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TrialConditionsStatusPhaseUpdatedMore infoNCT ID
The VITDALIZE Study: Effect of High-dose Vitamin D3 on 28-day Mortality in Adult Critically Ill PatientsCOVID-19, Coronaviridae Infections, Critical Illness, Disease Attributes, Infections, Nidovirales infectious disease, Nutritional and Metabolic Diseases, Orthocoronavirinae infectious disease, Pathologic Processes, Pathological Conditions, Signs and Symptoms, RNA Virus Infections, lung disorder, nutritional deficiency disease, nutritional disorder, pneumonia, respiratory system disorder, respiratory tract infectious disorder, viral infectious disease, viral pneumonia, vitamin D deficiency, vitamin deficiency disorderActive, not recruitingPhase 32026-10-09NCT03188796
Vitamin D Status and Its Influencing Factors in Zhejiang Province: A Multicenter Cross-Sectional StudyNutritional and Metabolic Diseases, nutritional deficiency disease, nutritional disorder, vitamin D deficiency, vitamin deficiency disorderEnrolling by invitationNot stated2026-10-08NCT07866391
A Natural History Study of Bone and Mineral DisordersBone Diseases, Metabolic, Nutritional and Metabolic Diseases, bone disorder, calcium metabolic disease, familial tumoral calcinosis, metabolic disease, musculoskeletal system disorder, nutritional deficiency disease, nutritional disorder, osteomalacia, osteoporosis, rickets, vitamin D deficiency, vitamin deficiency disorderRecruitingNot stated2026-10-08NCT00024804
Bone Myoregulation Reflex and Postural Control in Vitamin D DeficiencyNutritional and Metabolic Diseases, nutritional deficiency disease, nutritional disorder, vitamin D deficiency, vitamin deficiency disorderRecruitingNot stated2026-10-06NCT07435935
Supplementation of Cholecalciferol and Related Active Metabolites Through Bioenhancing Layer's Eggsvitamin D deficiencyRecruitingNot applicable2026-10-05NCT07859280
Osteoporosis & Renal Disease: Research in Primary Health Care ServicesBone Diseases, Metabolic, Chronic Disease, Disease Attributes, Female Urogenital Diseases, Female Urogenital Diseases and Pregnancy Complications, Male Urogenital Diseases, Nutritional and Metabolic Diseases, Pathologic Processes, Pathological Conditions, Signs and Symptoms, Urogenital Diseases, bone disorder, calcium metabolic disease, chronic renal failure syndrome, endocrine system disorder, hyperparathyroidism, kidney disorder, kidney failure, metabolic disease, musculoskeletal system disorder, nutritional deficiency disease, nutritional disorder, osteoporosis, parathyroid gland disorder, renal osteodystrophy, rickets, secondary hyperparathyroidism, urinary system disorder, vitamin D deficiency, vitamin deficiency disorderNot yet recruitingNot stated2026-09-30NCT07848490
Effects of Vitamin D on Health Promotion During Pregnancy and Its Impact on Prematurity-Related OutcomeFemale Urogenital Diseases and Pregnancy Complications, Nutritional and Metabolic Diseases, Obstetric Labor Complications, Obstetric Labor, Premature, Premature Birth, Urogenital Diseases, nutritional deficiency disease, nutritional disorder, pregnancy disorder, vitamin D deficiency, vitamin deficiency disorderActive, not recruitingNot stated2026-09-30NCT06292195
Preoperative Correction of Vitamin D Deficiency in Total Joint Arthroplasty (TJA)Nutritional and Metabolic Diseases, arthritic joint disease, arthropathy, musculoskeletal system disorder, nutritional deficiency disease, nutritional disorder, osteoarthritis, rheumatic disorder, vitamin D deficiency, vitamin deficiency disorderActive, not recruitingPhase 42026-09-23NCT07006714
A First-in-human Study of KK8123 in Adults With X-linked HypophosphatemiaBone Diseases, Metabolic, Congenital, Hereditary, and Neonatal Diseases and Abnormalities, Disease Attributes, Female Urogenital Diseases, Female Urogenital Diseases and Pregnancy Complications, Hypophosphatemia, Familial, Male Urogenital Diseases, Nutritional and Metabolic Diseases, Pathologic Processes, Pathological Conditions, Signs and Symptoms, Rare Diseases, Rickets, X-Linked Hypophosphatemic, Urogenital Diseases, X-linked hypophosphatemic rickets, bone disorder, calcium metabolic disease, hereditary disease, hypophosphatemia, hypophosphatemic rickets, inborn errors of metabolism, inborn metal metabolism disorder, kidney disorder, metabolic disease, musculoskeletal system disorder, nutritional deficiency disease, nutritional disorder, phosphorus metabolism disease, renal tubular transport disease, rickets, urinary system disorder, vitamin D deficiency, vitamin deficiency disorderRecruitingPhase 1 / Phase 22026-09-21NCT06525636
The CPH-MBD CohortBone Diseases, Metabolic, Chronic Disease, Disease Attributes, Female Urogenital Diseases, Female Urogenital Diseases and Pregnancy Complications, Male Urogenital Diseases, Nutritional and Metabolic Diseases, Pathologic Processes, Pathological Conditions, Signs and Symptoms, Urogenital Diseases, bone disorder, calcium metabolic disease, chronic renal failure syndrome, endocrine system disorder, hyperparathyroidism, kidney disorder, kidney failure, metabolic disease, musculoskeletal system disorder, nutritional deficiency disease, nutritional disorder, parathyroid gland disorder, renal osteodystrophy, rickets, secondary hyperparathyroidism, urinary system disorder, vitamin D deficiency, vitamin deficiency disorderRecruitingNot stated2026-09-16NCT07193056
Medium Cut-Off and High-Flux Membranes on Mineral and Bone Metabolism in Hemodialysis PatientsBone Diseases, Metabolic, Chronic Disease, Disease Attributes, Female Urogenital Diseases, Female Urogenital Diseases and Pregnancy Complications, Male Urogenital Diseases, Nutritional and Metabolic Diseases, Pathologic Processes, Pathological Conditions, Signs and Symptoms, Urogenital Diseases, bone disorder, calcium metabolic disease, chronic renal failure syndrome, endocrine system disorder, hyperparathyroidism, kidney disorder, kidney failure, metabolic disease, musculoskeletal system disorder, nutritional deficiency disease, nutritional disorder, parathyroid gland disorder, renal osteodystrophy, rickets, sclerosteosis, secondary hyperparathyroidism, urinary system disorder, vitamin D deficiency, vitamin deficiency disorderActive, not recruitingNot applicable2026-09-14NCT07685223
Vitamin D Homeostasis in SarcoidosisHemic and Lymphatic Diseases, Hypersensitivity, Delayed, immune system disorder, lymphatic system disorder, lymphoproliferative syndrome, sarcoidosis, vitamin D deficiencyRecruitingPhase 42026-09-03NCT03621553
Local and Systemic Inflammatory Bone Alterations Related to Dental Implant Survival.Chronic Disease, Disease Attributes, Female Urogenital Diseases, Female Urogenital Diseases and Pregnancy Complications, Male Urogenital Diseases, Nutritional and Metabolic Diseases, Pathologic Processes, Pathological Conditions, Signs and Symptoms, Peri-Implantitis, Renal Insufficiency, Acute, Stomatognathic Diseases, Urogenital Diseases, acute kidney injury, chronic renal failure syndrome, diabetes mellitus, endocrine system disorder, glucose metabolism disease, kidney disorder, kidney failure, metabolic disease, mouth disorder, nutritional deficiency disease, nutritional disorder, periodontal disorder, urinary system disorder, vitamin D deficiency, vitamin deficiency disorderActive, not recruitingNot stated2026-08-31NCT07766707
Impact of Vitamin D Supplementation on the Rate of Pathologic Complete Response in Vitamin D Deficient PatientsNeoplasms by Site, Nutritional and Metabolic Diseases, Skin and Connective Tissue Diseases, breast disorder, breast neoplasm, invasive breast carcinoma, neoplasm, nutritional deficiency disease, nutritional disorder, skin disorder, triple-negative breast carcinoma, vitamin D deficiency, vitamin deficiency disorderRecruitingPhase 22026-08-28NCT04677816
X-linked Hypophosphatemia Disease Monitoring ProgramBone Diseases, Metabolic, Congenital, Hereditary, and Neonatal Diseases and Abnormalities, Female Urogenital Diseases, Female Urogenital Diseases and Pregnancy Complications, Hypophosphatemia, Familial, Male Urogenital Diseases, Nutritional and Metabolic Diseases, Rickets, X-Linked Hypophosphatemic, Urogenital Diseases, X-linked hypophosphatemic rickets, bone disorder, calcium metabolic disease, hereditary disease, hypophosphatemia, hypophosphatemic rickets, inborn errors of metabolism, inborn metal metabolism disorder, kidney disorder, metabolic disease, musculoskeletal system disorder, nutritional deficiency disease, nutritional disorder, phosphorus metabolism disease, renal tubular transport disease, rickets, urinary system disorder, vitamin D deficiency, vitamin deficiency disorderActive, not recruitingNot stated2026-08-28NCT03651505
Vitamin A Supplementation in Allogeneic Stem Cell Transplantation.Nutritional and Metabolic Diseases, graft versus host disease, immune system disorder, nutritional deficiency disease, nutritional disorder, vitamin A deficiency, vitamin D deficiency, vitamin deficiency disorderRecruitingPhase 22026-08-24NCT06450925
Evaluation of the Clinical and Psychological Impact of Vitamin D Replacement in Adolescent Females at Risk for Polycystic Ovarian Syndrome (PCOS)Nutritional and Metabolic Diseases, nutritional deficiency disease, nutritional disorder, vitamin D deficiency, vitamin deficiency disorderRecruitingNot applicable2026-08-20NCT04355572
Vitamin D Status and Clinical Outcomes in Locally Advanced Cervical CancerNutritional and Metabolic Diseases, injury, nutritional deficiency disease, nutritional disorder, radiation injury, vitamin D deficiency, vitamin deficiency disorderRecruitingNot stated2026-08-04NCT07743918
Vitamin D2 vs Vitamin D2 Plus Calcitriol in Cholestatic Children With Vitamin D DeficiencyDigestive System Diseases, Nutritional and Metabolic Diseases, bile duct disorder, biliary tract disorder, cholestasis, nutritional deficiency disease, nutritional disorder, vitamin D deficiency, vitamin deficiency disorderRecruitingPhase 42026-08-03NCT07670611
25(OH)-Vitamin D and Its Association With Structural and Functional Parameters in Hospitalized Patients With Neurological DiseasesAtrophy, Bone Diseases, Metabolic, Neurologic Manifestations, Neuromuscular Manifestations, Nutritional and Metabolic Diseases, Pain, Pathological Conditions, Anatomical, Pathological Conditions, Signs and Symptoms, Sarcopenia, Signs and Symptoms, bone disorder, metabolic disease, muscular atrophy, musculoskeletal system disorder, nervous system disorder, osteoporosis, vitamin D deficiencyRecruitingNot applicable2026-07-31NCT06791044
Vitamin D Status and Asthma Control, Pulmonary Function, and Oxidative Stress in Adults With Bronchial AsthmaHypersensitivity, Immediate, Nutritional and Metabolic Diseases, Respiratory Hypersensitivity, asthma, bronchial disorder, immune system disorder, lung disorder, nutritional deficiency disease, nutritional disorder, obstructive lung disease, respiratory system disorder, vitamin D deficiency, vitamin deficiency disorderNot yet recruitingNot stated2026-07-29NCT07733635
Vitamin D Status and Lipid Profile in Obese Adults With Type 2 DiabetesBody Weight, Dyslipidemias, Lipid Metabolism Disorders, Nutritional and Metabolic Diseases, Overweight, Pathological Conditions, Signs and Symptoms, Signs and Symptoms, diabetes mellitus, endocrine system disorder, glucose metabolism disease, metabolic disease, nutritional deficiency disease, nutritional disorder, obesity disorder, overnutrition, type 2 diabetes mellitus, vitamin D deficiency, vitamin deficiency disorderNot yet recruitingNot stated2026-07-27NCT07729553
Phosphorus-31 Spectroscopy in Phosphate DiabetesBone Diseases, Metabolic, Congenital, Hereditary, and Neonatal Diseases and Abnormalities, Female Urogenital Diseases, Female Urogenital Diseases and Pregnancy Complications, Hypophosphatemia, Familial, Male Urogenital Diseases, Nutritional and Metabolic Diseases, Phosphaturia, Rickets, X-Linked Hypophosphatemic, Urogenital Diseases, X-linked hypophosphatemic rickets, bone disorder, calcium metabolic disease, hereditary disease, hypophosphatemia, hypophosphatemic rickets, inborn errors of metabolism, inborn metal metabolism disorder, kidney disorder, metabolic disease, musculoskeletal system disorder, nutritional deficiency disease, nutritional disorder, phosphorus metabolism disease, renal tubular transport disease, rickets, urinary system disorder, vitamin D deficiency, vitamin deficiency disorderRecruitingNot applicable2026-07-23NCT06921720
An Investigation of the Effect of Vitamin D Level During Frozen Embryo Transfer (FET) in IVF and Pregnancy Outcomesvitamin D deficiencyRecruitingNot stated2026-07-15NCT07681115
Registry for Patients With X-Linked HypophosphatemiaBone Diseases, Metabolic, Congenital, Hereditary, and Neonatal Diseases and Abnormalities, Female Urogenital Diseases, Female Urogenital Diseases and Pregnancy Complications, Hypophosphatemia, Familial, Male Urogenital Diseases, Nutritional and Metabolic Diseases, Rickets, X-Linked Hypophosphatemic, Urogenital Diseases, X-linked hypophosphatemic rickets, bone disorder, calcium metabolic disease, hereditary disease, hypophosphatemia, hypophosphatemic rickets, inborn errors of metabolism, inborn metal metabolism disorder, kidney disorder, metabolic disease, musculoskeletal system disorder, nutritional deficiency disease, nutritional disorder, phosphorus metabolism disease, renal tubular transport disease, rickets, urinary system disorder, vitamin D deficiency, vitamin deficiency disorderRecruitingNot stated2026-07-09NCT03193476