Patient Characteristics
A total of forty-five patients enrolled in the study, of which twenty-one completed ABPMs. Baseline demographic data and specific clinical characteristics are presented in Table 1. Demographics included predominance of males (71%), Caucasians (96%), B-cell ALL (80%), and high-risk ALL (62%). The median age at time of diagnosis was 4 years and median age at time of study visit was 7 years. Four patients had pre-existing renal disease prior to diagnosis of ALL. Twenty-nine patients were receiving active ALL therapy at time of enrollment in the study, and eighteen patients were receiving steroids at enrollment.