The risk of HO accompanying biopsy acquisition hinders the study of FOP.
Osteogenic transdifferentiation of fibroblasts provides an in vitro model for FOP.
FOP fibroblasts show higher potential for osteogenic transdifferentiation.
TGFβ signaling inhibition stops osteogenic transdifferentiation and mineralization.
TGFβ is an attractive new target for FOP treatment.