145 Background: Reavan in 1988 noted that several risk factors for cardiovascular diseases commonly cluster together, and he recognised them as a disease, named syndrome X, currently known as metabolic syndrome. Metabolic syndrome is a group of disorders related to insulin resistance, characterized clinically by central obesity, hyperglycemia, dyslipidemia and hypertension. There is a growing body of evidence indicating that pediatric cancer survivors are at a greater risk of developing metabolic syndrome. We studied the prevalence of metabolic syndrome in children with cancer who completed their treatment and on follow up. Methods: All relevant past medical data (of the disease, treatment and all events) were collected from the medical records. Tanner staging was perfomred, height was measured using a Harpenden stadiometer. Weight/WAIST circumference were measured. The body mass index (BMI) was calculated as weight (kg)/(height (m)²). BMI ≥90thcentile as per CDC chart was taken as abnormal. Blood pressure was measured on the right arm of the patient. Presence of family history of diabetes, cardiovascular diseases and hypercholesterolemia were taken. Fasting Blood sugar, insulin, HbA1C, lipid profile were done. We used IDF(International diabetes federation) criteria to assess the metabolic syndrome among cancer survivors. This study was approved by our university ethics comittee. Results: Seventy five children who fulfilled the inclusion criteria were included in this study. Out of which 48 were males and 27 were females. Among these, majority of children are treated for acute lymphoblastic leukemia. 8.25% of total population satisfied the criteria of metabolic syndrome. Age, gender, diagnosis, modality of treatment were not to be of statistical significance, however majority of children with metabolic syndrome are in adolescent group. Conclusions: With the better care committed to children with cancer even in developing country, the survival rates are greatly improving and so metabolic syndrome is becoming the major target for intervention in the follow up of cancer survivors. As metabolic syndrome cannot treated by a single drug therapy, it is necessary to have cancer survivors follow up screening.