FOXF1 and alveolar capillary dysplasia with misalignment of pulmonary veins: Heterozygous loss-of-function of the mesenchymal forkhead transcription factor gene FOXF1 at chr16q24.1 has been found in 80–90% of neonates with a lethal lung developmental disorder, alveolar capillary dysplasia with misalignment of pulmonary veins (ACDMPV, MIM 265380) [1,2].