Wachter et al. investigated in detail the PSMA expression levels in 39 patients with ATC and 22 with PDTC via an IHC analysis of both primary tumors and metastases, concluding that 36/39 ATCs were PSMA+ (high intensity in 27 patients) and 21/22 PDTC were PSMA+ (high in 13 patients). Here, FOLH1 is linked to Ehlers-Danlos syndrome, musculocontractural type.