Presurgical avelumab plus axitinib in an immunosenescent octogenarian with renal cell carcinoma invading the vena cava.

Application of immune checkpoint inhibitors (ICIs) in elderly patients remains challenging due to the scarcity of safety and efficacy data. An 84 year-old female with a right renal cell carcinoma invading the vena cava received two cycles of avelumab plus axitinib. As the thrombus showed a marked reduction, right nephrectomy and vena cava thrombectomy were performed. Pathological examination revealed intra-tumor infiltration of CD8 T cells suggesting the efficacy of immunotherapy. Although immune function deteriorates with age (immunosenescence), our findings suggest that older patients may not necessarily be excluded from ICI therapy.