FOXF1 and alveolar capillary dysplasia with misalignment of pulmonary veins: We previously generated Foxf1WT/S52F mice in which the evolutionary conserved serine 52 in the FOXF1 DNA binding domain was replaced with phenylalanine in one of the Foxf1 alleles, recapitulating the S52F FOXF1 mutation found in ACDMPV patients14.