Effect of Vitamin D Diffiency on Oral Mucosa in Patients Recieving Methotrexate Chemotherapy

it's a prospective study aiming to improve quality of life of patients with acute lymphoblastic leukemia suffering from oral mucositis, receiving courses of methotrexate chemotherapy , by measuring vitamin D in those patients before induction therapy and the change in its level during treatment, that associated with methotrexate-induced oral mucositis, taking in consideration serum level of methotrexate, so we may have assiotiation between vitamin D difficiency and oral mucositis . at the end we can have preventive interventions to protect against this harmful side effect.