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Abstract
Background: Success of umbilical cord blood transplantation (UCBT) is mostly affected by the cell dose infused and its application is limited by the size of the recipient. For most adults and older children it is not possible to find a single UCB unit large enough for reliable engraftment. One strategy to increase the number of progenitor cells available is ex vivo expansion of the unit. The main challenge of ex vivo expansion systems is how not to deplete the self-renewing cell population by driving them into differentiation into committed progenitors. Objective: Copper modulates basic cell functions, such as survival, proliferation, and differentiation. Reduction of cellular copper in ex vivo culture conditions enabled preferential proliferation of early progenitors and increased engraftment capabilities. The result of a Phase I study of carlecortemcel-l, a product derived from ex vivo expansion of UCB progenitors in the presence of a copper chelator and early-acting cytokines, and the study design for the current pivotal study are presented. Methods: A literature review using PubMed and the investigator's brochure from the manufacturer. Conclusions: Early results suggest that carlecortemcel-l infusion is safe and may be associated with favorable non-relapse mortality rates. A pivotal global study is currently being conducted to evaluate safety and efficacy of this product from centralized manufacturing facilities.