VEGFA and retinopathy of prematurity: The aims of this analysis were to describe concentrations of free and adjusted bound aflibercept in plasma of preterm infants with ROP following treatment, investigate the presence of any anti-drug antibodies (ADAs), and explore the relationship between drug exposure and systolic blood pressure (SBP) and diastolic blood pressure (DBP) as markers of systemic anti-VEGF effects, using data from the FIREFLEYE trial [13].