Abstract
The radiosynthesis of pharmaceutical grade [68Ga]Ga-NODAGA-Lys40-Exendin-4 was accomplished in a fixed tubing-based module, EZ Modular-Lab Standard. Purification of the product via hydrophilic-lipophilic balance cartridge, yielded satisfactory results with radiochemical purity > 98%. The decay-corrected radiochemical yield (RCY) with 50 µg of Exendin-4[Lys40(NODAGA)] was (78.7 ± 0.8)%, which, by far, to the best of our knowledge, is the highest RCY reported till date, using an automated synthesizer. The quality control parameters were in accordance with that of gallium (68Ga) Edotreotide® Injections, featuring in the European Pharmacopoeia. Pre-clinical dosimetry studies in animal models, with co-administration of kidney protectant, demonstrates promising potential of the product towards clinical translation to insulinoma patients.Graphical abstract
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