This study is a pivotal Phase 2/3 randomized, double-blind, palivizumab-controlled study to evaluate the safety, pharmacokinetics (PK), anti-drug antibody (ADA) response, and descriptive efficacy for MEDI8897 in high-risk infants eligible to receive palivizumab when entering their first or second RSV season (Season 1 or Season 2, respectively). Approximately 1,500 palivizumab-eligible infants entering their first RSV season will be enrolled into one of 2 cohorts : (1) preterm cohort, including approximately 750 preterm infants (≤ 35 weeks GA) without CLD/CHD, or (2) CLD/CHD cohort, including approximately 750 infants with CLD of prematurity or hemodynamically significant CHD. As minimum of 100 infants with hemodynamically significant CHD will be enrolled. Within each cohort, randomization will be stratified by hemisphere (northern, southern) and subject age at the time of Season 1 randomization (≤ 3 months, > 3 to ≤ 6 months, > 6 months).
Laura Fearn, RN