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Uterine carcinosarcoma (UCS) is a rare and highly aggressive gynecological malignancy characterized by poor prognosis. Due to its rarity, UCS remains relatively unexplored, and specific treatment guidelines are scarce. Despite standard treatments, including surgery, adjuvant chemotherapy, and radiotherapy, UCS has a high recurrence rate and poor overall prognosis. The aggressive nature of UCS is attributed to the metaplastic transformation of carcinomatous elements into sarcoma. This "biphasic" neoplasm features a mixture of epithelial and mesenchymal/tumor components, which partially share molecular signatures and exhibit a typical epithelial-to-mesenchymal transition (EMT) gene expression profile. Recent scientific advancements have highlighted the pivotal role of EMT in UCS progression and mortality. This review covers the epidemiology of UCS, theories regarding its origin, and the current state of clinical trials with more emphasis on the role of EMT drivers in UCS progression and scope of targeting these molecules. By shedding light on the molecular mechanisms supporting UCS, particularly emphasizing the importance of EMT, we aim to provide a more comprehensive understanding of the disease to support the development of more effective therapeutic strategies.
Pillai et al. (Wed,) studied this question.