Upper limb amelia, facial clefts, holoprosencephaly, and interrupted aortic arch.

The combination of bilateral brachial amelia, facial clefting, and holoprosencephaly is rare. To our knowledge, only 4 patients with this combination of malformations have been described so far. We report on a male fetus with bilateral brachial amelia, complex facial clefts, frontal craniosynostosis and hypoplasia, thoracic kyphoscoliosis, and holoprosencephaly. In addition, an interrupted aortic arch, a muscular ventricular septal defect, and localized noncompaction of the septal myocardium were present. Although fibroblast culture was not successful, fluorescent in situ hybridization of paraffin-embedded tissue showed a normal set of chromosomes 13, 18, 21, X and Y. Our observation supports the hypothesis that this malformation combination may constitute a distinct entity. However, so far, a genetic defect remains to be identified.