GMP-Compliant Automated Radiolabeling and Quality Controls of [<sup>68</sup>Ga]Ga-FAPI-46 for Fibroblast Activation Protein-Targeted PET Imaging in Clinical Settings - Archive ouverte HAL
Article Dans Une Revue Chemical and Pharmaceutical Bulletin Année : 2024

GMP-Compliant Automated Radiolabeling and Quality Controls of [68Ga]Ga-FAPI-46 for Fibroblast Activation Protein-Targeted PET Imaging in Clinical Settings

Résumé

In nuclear medicine, molecular imaging of the tumor microenvironment using radiopharmaceuticals (RPs) targeting cancer-associated fibroblasts is gaining significant interest. Among these RPs, [ 68 Ga]Ga-FAPI-46 for positron emission tomography (PET) imaging is frequently used in clinical research protocols. To ensure that the production of this RP complies with good manufacturing practices, process automation is widely adopted. In this context, an automated method for preparing [ 68 Ga]Ga-FAPI-46 was designed using a GAIA ® synthesizer. Additionally, a HPLC method was developed and validated to determine the radiochemical purity (RCP) of [ 68 Ga]Ga-FAPI-46 and ensure product quality. The validated HPLC method showed excellent repeatability, with coefficients of variation (%CV) for RCP and retention time (t R ) below 0.03 and 0.16%, respectively, across 10 measurements. The radiochemical identification of [ 68 Ga]Ga-FAPI-46 showed comparable tr values to [ nat Ga]Ga-FAPI-46 (6.65 and 6.59 min, respectively). The limits of detection (LOD) and quantification (LOQ) were 79 and 42 kBq/mL, respectively, with a linear detector response between 62.9 and 0.08 MBq/mL (R2 = 0.9999). The method proved robust, tolerating minor variations in mobile phase flow rate and composition. This validated radio-HPLC method can be used routinely for the quality control of [ 68 Ga]Ga-FAPI-46. Finally, three RP validation batches were produced using the automated method described and subjected to multiple quality controls. All three synthesis products met the expected specifications, notably regarding appearance, chemical and isotope identification, pH, sterility, stability, and radionuclidic and radiochemical purity.
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hal-04803875 , version 1 (26-11-2024)

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Léa Rubira, Jade Torchio, Juliette Fouillet, Johanne Vanney, Cyril Fersing. GMP-Compliant Automated Radiolabeling and Quality Controls of [68Ga]Ga-FAPI-46 for Fibroblast Activation Protein-Targeted PET Imaging in Clinical Settings. Chemical and Pharmaceutical Bulletin, 2024, 72 (11), pp.1014 - 1023. ⟨10.1248/cpb.c24-00531⟩. ⟨hal-04803875⟩
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