The prognostic value of AQP1 in hyperbilirubinemia related to ABO hemolytic disease of the newborn

BACKGROUND: ABO hemolytic disease of the newborn (ABO-HDN) is a major cause of hyperbilirubinemia in neonates, often inducing significant elevation of serum bilirubin levels shortly after birth. PURPOSE: This study aimed to assess the prognostic value of Aquaporin 1 (AQP1) for hyperbilirubinemia in ABO-HDN as reflected by the duration of phototherapy, a key clinical indicator of disease severity and treatment response. METHODS: = 84) according to the median. All neonates were followed up for 7 days after the initiation of phototherapy, and a cure was defined as no total bilirubin (TBIL) rebound within 48 h after reaching the normal TBIL level. The cure rate was defined as the proportion of participants who achieved a cure within the 7‑day follow‑up period. CONCLUSION: High-AQP1 expression was closely associated with prolonged treatment duration in ABO-HDN-related hyperbilirubinemia. AQP1 can serve as a potential molecular marker for prognostic assessment and individualized treatment guidance in such neonates.