Circular RNA (circRNA) was first discovered in viruses in 1974, they are primarily formed through back-splicing, where a downstream splice donor is joined to an upstream splice acceptor, resulting in a closed circRNA transcript. Under normal conditions, most circRNAs are stably expressed, however, in pathological conditions, circRNAs can play critical roles in the disease process of multiple myeloma (MM) through mechanisms such as competing endogenous RNAs (ceRNAs), regulation of transcription and splicing, affecting protein expression and localization, and even direct encoding of peptides. In recent years, there has been increasing interest in the role of circRNAs in MM and their regulatory functions during the disease process. Numerous studies have revealed that circRNAs are involved in the pathogenesis and prognosis of MM, aiding in the identification of reliable prognostic markers and potential therapeutic targets. Therefore, this review summarizes the structural characteristics of circRNAs, and their regulatory roles in MM, and introduces the latest advancements in understanding the novel functions of circRNAs in MM.

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http://dx.doi.org/10.1016/j.exphem.2024.104709DOI Listing

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