STAT3 and lung cancer: STAT3 activation has been observed in hematological malignancies (Arora et al. 2018) and solid tumors (Yu and Jove 2004), head and neck cancer (Sriuranpong et al. 2003), melanoma (Niu et al. 2002), lung cancer (Song et al. 2003), pancreatic cancer (He et al. 2021), breast cancer (Garcia et al. 2001), prostate cancer (Mora et al. 2002; Lou et al. 2000), and ovarian cancer (Liang et al. 2020).