Letter to the Editor

We read with interest the Boston Children’s Hospital series reporting the outcome of 81 infants with biliary atresia (BA) treated with Kasai portoenterostomy (KPE) presenting during the period 1990–2016 and reported by Ramos-Gonzalez et al [1]. They highlight the importance of the total bilirubin level at three months postoperatively in predicting the need for transplant, and this metric is the one most closely associated with the efficacy of the operation. Although not explicit, our inference from the paper is that their own clearance of jaundice rate (COJ) (< 2 mg/dL ≈ < 34 μmol/L) was 49% (40/81 infants).