Abstract
IntroductionWe report two cases of renal cell carcinoma with brain metastases that showed remarkable responses to cabozantinib.Case presentation(Case 1) A 70‐year‐old man with cT3aN0M0 clear cell renal cell carcinoma underwent radical nephrectomy and developed multiple brain metastases 2 months postoperatively. The brain lesions regressed after stereotactic radiotherapy followed by ipilimumab plus nivolumab therapy, but a new brain metastasis that caused hemiplegia developed after 6 months and showed no response to stereotactic radiotherapy. However, complete remission was achieved, and hemiplegia ceased within 2 weeks of cabozantinib therapy. (Case 2) A 63‐year‐old man with cT3aN0M1 clear cell renal cell carcinoma and brain metastases underwent upfront cytoreductive nephrectomy. The brain lesions progressed rapidly 1 month postoperatively. The lesions disappeared 2 weeks after cabozantinib plus nivolumab therapy.ConclusionCabozantinib, alone or in combination with immune checkpoint inhibitors, may be a viable option for clear cell renal cell carcinoma with brain metastases.
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