CXCL1 and thyroid cancer: MCs also produce a broad spectrum of chemokines (CXCL8/IL-8, CCL25/TECK, CXCL10/IP-10, CXCL1/GRO-α), interleukins (IL-6), and other molecules (TNF-α) that are involved in the epithelial-to-mesenchymal transition (EMT) activation of thyroid cancer cells [32,33].