Qian et al. show that the receptor tyrosine kinase FLT1 is highly expressed in a subset of macrophages enriched in breast cancer metastatic sites. Inhibition of this kinase reduces metastasis to the lungs by blocking signaling via focal adhesion kinase 1 to an inflammatory state in the macrophages centered on signaling from the macrophage growth factor, colony stimulating factor-1.
Two cases of metastatic colorectal cancer with a POLE mutation, both of which were ultramutated and microsatellite stable, are presented and discussed from the standpoint of the basic biochemical mechanisms leading to a unique phenotype in POLE deficiency, the challenges faced with interpreting the genomic profiling of tumors in this important subset of patients, and the potential clinical implications.
Metastatic urothelial carcinoma has been associated with poor prognosis and a median survival of approximately 12-14 months with standard therapy. Treatment options for decades have been limited to platinum based chemotherapy as first line with few therapeutic options available to the majority who will ultimately progress beyond platinum. Areas covered: This review focuses on the various targeted, antiangiogenic, chemotherapeutic and immunotherapeutic agents currently being developed for the treatment of urothelial carcinoma. Expert opinion: Incorporation of systemic immunotherapy into the treatment of urothelial carcinoma has already fundamentally changed the treatment of this disease. The landscape is rapidly changing and it is likely that immunotherapy will be incorporated into therapy in earlier disease states and in novel combinations. Outcomes in urothelial carcinoma have improved and likely to improve further with ongoing and future clinical research that is discussed in this review.
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