STAT1 and fibrosarcoma: Its anti-tumor activity has been shown for fibrosarcoma and melanoma by the induction of HLA-I and signal transducer and activator of transcription 1 (STAT1)–associated cyclin-dependent kinase, leading to apoptosis of the tumor cells and recognition by the immune system (Ikeda et al., 2002; Gao et al., 2016).