Comparison of the performance of different formulae to assess eGFR in children after allogenic hematopoietic stem cell transplantation

There were small differences in accuracy between simpler eGFR formulae against the reference formula, however we observed differences in error. The U25CYSC offered best accuracy but largest error leading to underestimation of eGFR. Therefore, when applying given formula, one must be mindful of its potential limitations and potential inherent biases.