Abstract
Background aimsDendritic cells (DCs) are professional antigen-presenting cells of the mammalian immune system. Ex vivo differentiated DCs represent a unique Advanced Therapy Medicinal Product (ATMP), used in several clinical trials as personalized cancer immunotherapy. The therapy's reliability depends on its capacity to produce high-quality mature DCs (mDCs) in compliance with Good Manufacturing Practices. AimsFrom March 2010 to December 2023, 103 patients were enrolled in multiple clinical trials at the Immuno-Gene Therapy Factory at IRCCS Istituto Romagnolo per lo Studio dei Tumori (IRST) “Dino Amadori”. Six hundred forty-two doses were produced, and the manufacturing process was implemented to optimize production. Our study is a retrospective analysis focusing on the quality control results. MethodsWe retrospectively analyzed the results of the quality control tests carried out on each produced batch, evaluating viability, purity and phenotype of mDCs and their quality in terms of microbiological safety. The data obtained are given with median and interquartile range. ResultsThe batches were found to be microbiologically safe in terms of sterility, mycoplasma, and endotoxins. An increase in DC maturation markers was found. The release criteria checks showed a high percentage of viability and purity was maintained during the production process. ConclusionsOur findings have confirmed that the measures implemented have ensured the safety of the products and have contributed to the establishing a robust “Pharmaceutical Quality System.” This has enabled many safe mDCs to be produced for clinical trials.
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