A few rare cases of RET rearrangements in PDTCs, in eight ATCs, and in two MTCs have been described in the literature (Grubbs et al. 2015, Landa et al. 2016, Yang et al. 2021, Parimi et al. 2023). The gene discussed is RET; the disease is Ehlers-Danlos syndrome, musculocontractural type.