FOXF1 and alveolar capillary dysplasia with misalignment of pulmonary veins: Heterozygous point mutations of the FOXF1 gene or deletions involving FOXF1 and/or the enhancer region at 16q24.1 are found in about 90% of cases of ACDMPV, suggesting that a haploinsufficiency mechanism involving this gene is responsible for the disease.