Furthermore, mutations in IL17RD have also been associated with certain non-epithelial cancers, such as medullary thyroid carcinoma (MTC) [53] and follicular dendritic cell sarcoma (FDCS) [54] (see Table 1), in combination with perturbations in other RTK family members. The gene discussed is IL17RD; the disease is medullary thyroid gland carcinoma.