Complete response to immune checkpoint blockade in sarcomatoid renal cell carcinoma with bone marrow metastasis: case report with tumor immune microenvironment profiling. - Miura Y; Jikuya R; Saijo A; Yano H; Kinowaki K; Takemura K; Uchino K; Hasumi H; Komohara Y (Journal for immunotherapy of cancer, 2026)