However, in one case of papillary RCC with lung and retroperitoneal metastases, [68Ga]Ga‐NOTA‐RCCB6 showed no uptake in metastatic lesions, while 18F‐FDG PET/CT yielded positive signals, suggesting that current CD70‐targeted tracers may have limited sensitivity in tumours with low CD70 expression.49 The gene discussed is CD70; the disease is neoplasm.