IFT80  Intraflagellar transport protein 80 homolog (IFT80), also known as WD repeat-containing protein 56, is a protein that in humans is encoded by the "IFT80" gene. IFT80 is part of the intraflagellar transport complex B and is necessary for the function of motile and sensory cilia. Mutations in the "IFT80" gene are associated with asphyxiating thoracic dysplasia.