Clinical Research Directory

Inclusion Criteria: * Nephrotic patients under 16 years of age of both genders who were treated with GC for the first time. GC treatment was initiated at a dose of 2 mg/kg/day prednisolone with gradual dose reduction. * All patients have been on glucocorticoid therapy for more than 6 months. All patients have sufficient vitamin D level 30 ng/ml (75 nmol/L) or above. Exclusion Criteria: 1. Patients with impaired kidney functions. 2. Non-compliant patients on medications or vitamin supplements. 3. Diseases that affect fat-soluable vitamins absorption such as gallbladder or biliary disease, cystic fibrosis, celiac disease, etc. 4. History of vitamin K-related disorders as bleeding disorders, osteomalacia , etc. 5. History of bone fracture before the study. 6. Any nephrotic syndrome with identified genetic causes.