In particular, TfR1/CD71 overexpression was observed in all cases of ATCs tested (10 out 10 cases), and similarly to most cases of PTC, a combined strong and diffuse cytoplasmic, as well as, cell membrane immunostaining was observed (Figures 1 and 2) [91]. Here, TFRC is linked to Ehlers-Danlos syndrome, musculocontractural type.