FURIN and thyroid gland papillary carcinoma: Indeed, aberrant furin expression has been documented across multiple malignancies, including breast cancer [15], lung cancer [16], head and neck [17], ovarian cancer [18], hepatocellular carcinoma [19], squamous cell carcinoma [20], sarcoma [8], and papillary thyroid carcinoma [21], as well as CRC [22].