Clinical Trials Browser

Interventional × Cholecalciferol × 1 year × Clear all

NCT02856503 2026-04-17

Effect of High Dose Vitamin D on Cancer Biomarkers and Breast Cancer Tumors

Phase 1/2 Withdrawn

Breast Neoplasms, Carcinoma, Intraductal, Noninfiltrating

NCT04677816 2026-04-14

Impact of Vitamin D Supplementation on the Rate of Pathologic Complete Response in Vitamin D Deficient Patients

Phase 2 Recruiting

Vitamin D Deficiency, Triple Negative Breast Neoplasms

NCT01419730 2026-04-07

Vitamin D and Physical Activity on Bone Health

Phase 2 Active not recruiting

Bone Metabolism Biomarkers

NCT02553447 2026-03-31

Cholecalciferol in Newly Diagnosed Non-Hodgkin Lymphoma or Chronic Lymphocytic Leukemia With Vitamin D Deficiency

Phase NA Completed

197 enrolled 15 charts

LymphoidOther hematologic neoplasm

Lymphoma, Non-Hodgkin, Vitamin D Deficiency, Leukemia, Lymphocytic, Chronic, B-Cell

NCT04067726 2026-03-31

TRIDENT

Phase 2 Active not recruiting

Breast Neoplasms

NCT01480869 2026-03-12

VITACAL

Phase 3 Completed

Breast Neoplasms

NCT04094688 2026-03-03

SOLARIS

Phase 3 Active not recruiting

455 enrolled 13 charts

Gastrointestinal

Colorectal Adenocarcinoma

NCT05045066 2026-03-02

Immunological Effects of Vitamin D Replacement Among Black/African American Prostate Cancer Patients

Phase EARLY_PHASE1 Recruiting

Prostatic Neoplasms

NCT05838716 2026-01-15

ViPER

Phase 3 Recruiting

Prostatic Neoplasms

NCT01787409 2025-12-30

Cholecalciferol in Improving Survival in Patients With Newly Diagnosed Cancer With Vitamin D Insufficiency

Phase NA Active not recruiting

DermatologicLymphoidOther hematologic neoplasm

Subcutaneous panniculitis-like T-cell lymphoma, Immunoblastic Lymphadenopathy, Leukemia, Lymphocytic, Chronic, B-Cell, Lymphoma, T-Cell, Lymphoma, Large B-Cell, Diffuse, Lymphoma, Large-Cell, Anaplastic, Lymphoma, Extranodal NK-T-Cell, Lymphoma, Primary Cutaneous Anaplastic Large Cell, Enteropathy-Associated T-Cell Lymphoma

NCT01351805 2025-12-03

VITAL

Phase NA Completed

25,871 enrolled 15 charts

Arthritis, Rheumatoid, Autoimmune Diseases, Osteoarthritis, Psoriasis

NCT01169259 2025-11-06

VITAL

Phase 3 Active not recruiting

25,871 enrolled 38 charts

Cardiovascular Diseases, Neoplasms

NCT04621500 2025-07-04

VitD/RNA-seq

Phase 2 Completed

60 enrolled 7 charts

Prostatic Neoplasms, Vitamin D Deficiency, Fractures, Stress

NCT02172651 2025-04-20

Vitamin D in Patients With Stage I-III Colon Cancer or Resectable Colon Cancer Liver Metastases

Phase EARLY_PHASE1 Recruiting

Gastrointestinal

Colonic Neoplasms