Hypertension Intervention to Reduce Osteonecrosis in Children With Acute Lymphoblastic Leukemia/Lymphoma

This is a randomized unblinded Phase II clinical trial evaluating the impact of intensive antihypertensive control (targeted to the 50-75th percentile for age, sex, and height) compared to conventional antihypertensive control (targeted to the 90-95th percentile for age, sex, and height) on the incidence of radiographically extensive osteonecrosis in children and young adults receiving treatment for newly diagnosed acute lymphoblastic leukemia/lymphoma (ALL). Primary Objective * Compare the frequency of radiographically extensive osteonecrosis in patients receiving intensive compared to conventional antihypertensive therapy. Secondary Objectives * Evaluate the efficacy of intensive antihypertensive control compared to conventional antihypertensive control in the prevention of clinically significant (CTCAE Grade 2 or higher) and radiologically extensive osteonecrosis, overall and stratified by joints. * Compare the frequency of clinically significant and radiographically extensive osteonecrosis in patients receiving antihypertensive therapy and historical controls. * Compare blood pressures achieved in intensive and conventional arms using both pressures obtained as part of routine patient care and ambulatory blood pressure monitoring. * Compare levels of vascular dysfunction as measured physiologically, radiographically, and in blood samples in patients receiving intensive compared to standard antihypertensive therapy. Exploratory Objectives * Identify predictive patterns of blood biomarkers which identify patients at high- risk of developing clinically significant osteonecrosis. * Identify MRI findings during late induction which correlate with osteonecrosis lesions seen during reinduction. * Identify patterns of diurnal blood pressure variation as measured by ambulatory blood pressure monitoring associated with the later development of osteonecrosis. * Compare induction blood pressure control and intervention arm to echocardiographic changes at reinduction II. * Evaluate patient-reported, health-related quality of life in patients during induction and after 1.5 years of therapy when many experience the symptoms of osteonecrosis.

Inclusion Criteria: * Patient is being treated for newly diagnosed acute lymphoblastic leukemia or lymphoma (ALL) on the TOT17 protocol. Patients do not need to be hypertensive to enroll. * Patient is 10 years of age or older at the time of enrollment on TOT17. * Patient has completed ≤ 4 days of protocol therapy (patients are eligible on Day 4 of TOT17 therapy). Exclusion Criteria: * Moderate-severe renal dysfunction (glomerular filtration rate \