Metastatic renal cell carcinoma, the possibility of targeted therapy. Case.

Malignant neoplasms of the kidney are quite an urgent problem. In the Russian Federation in 2019, 20758 patients with a newly diagnosed renal cell carcinoma were registered; it should be noted that at the end of 2019, 177 755 patients with this diagnosis were registered. Clear cell carcinoma of the kidney is the most common (75–80%) and most studied subtype of renal cell carcinoma. Because renal cell carcinoma is resistant to chemotherapy, interleukin-2 or interferon alpha has previously been widely used as the first line of treatment for metastatic disease. Sunitinib is an oral tyrosine kinase inhibitor that includes the vascular endothelial growth factor receptor (VEGFR) and the platelet growth factor receptor (PDGFR). Two phase II studies of sunitinib as an anti-angiogenic agent have shown clinical efficacy in patients who progressed on cytokine therapy. Currently, in connection with the development of immuno-oncological drugs, tyrosine kinase inhibitors are fading into the background. It should also be noted that immuno-oncological drugs have their own spectrum of contraindications and immune-mediated toxicity. A clinical case of treatment of a patient with metastatic renal cell carcinoma in the group with a favorable prognosis for IMDC and contraindications to immunotherapy is presented. A history of autoimmune thyroiditis, which was previously treated with levothyroxine sodium, contraindicated treatment with checkpoint inhibitors. The  patient started therapy with the  tyrosine kinase inhibitor sunitinib. Sunitinib therapy made it possible to achieve disease control for  more than 4  years with satisfactory tolerance. The noted adverse events were stopped during therapy and did not lead to a reduction in doses of sunitinib and its cancellation. 

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