Following the recommendation of its Committee for Advanced Therapies (CAT), the European Medicines Agency (EMA) on Tuesday warned patients against using unapproved and unregulated cell therapies, citing serious and potentially fatal side effects.
EMA says the warning was prompted by “the appearance of advertisements for cell therapies as cures for serious conditions across the European Union in early 2020,” and serves to replace a decade-old warning against unregulated stem-cell products.
“Patients using unproven or unregulated cell-based therapies have reportedly suffered serious, sometimes fatal, side effects including infections, unwanted immune reactions, tumor formation, loss of vision and bleeding in the brain,” EMA says, explaining that when cells are used for different functions in a recipient or are substantially manipulated, such products are regulated as medicines.
EMA notes that cell-based therapies hold promise for treating patients with serious diseases but says that well-designed clinical trials and regulatory oversight are necessary to ensure the safety, efficacy and quality of the therapies.