FASLG and head and neck squamous cell carcinoma: Hubert Vermeersch et al. [39] demonstrated that in the patients suffering from squamous cell carcinoma of the head and neck (SCCHN), 99mTc-Annexin V activity in tumor lesion (%ID/cm3) was correlated linearly with its Fas ligand (FasL) expression (HSCORE) (Fig. 2).