Rosenberg Adam J, Cheung Yiu-Yin, Liu Fei, Sollert Carina, Peterson Todd E, Kropski Jonathan A
Vanderbilt University Institute of Imaging Science, Vanderbilt University Medical Center, Nashville, TN, 37232, USA.
Department of Radiology and Radiological Sciences, Vanderbilt University Medical Center, Nashville, TN, 37232, USA.
EJNMMI Radiopharm Chem. 2023 Oct 16;8(1):29. doi: 10.1186/s41181-023-00216-0.
BACKGROUND: Radiopharmaceuticals capable of targeting the fibroblast activation protein have become widely utilized in the research realm as well as show great promise to be commercialized; with [Ga]Ga-FAPI-46 being one of the most widely utilized. Until now the synthesis has relied on generator-produced gallium-68. Here we present a developed method to utilize liquid-target cyclotron-produced gallium-68 to prepare [Ga]Ga-FAPI-46. RESULTS: A fully-automated manufacturing process for [Ga]Ga-FAPI-46 was developed starting with the Zn[p,n]Ga cyclotron bombardment to provide [Ga]GaCl, automated purification of the [Ga]GaCl, chelation with the precursor, and final formulation/purification. The activity levels produced were sufficient for multiple clinical research doses, and the final product met all release criteria. Furthermore, the process consistently provides < 2% of Ga-66 and Ga-67 at the 4-h expiry, meeting the Ph. Eur. CONCLUSIONS: The automated radiosynthesis on the GE FASTlab 2 module purifies the cyclotron output into [Ga]GaCl, performs the labeling, formulates the product, and sterilizes the product while transferring to the final vial. Production of > 40 mCi (> 1480 MBq) of [Ga]Ga-FAPI-46 in excellent radiochemical yield was achieved with all batches meeting release criteria.
背景:能够靶向成纤维细胞活化蛋白的放射性药物已在研究领域得到广泛应用,并显示出巨大的商业化潜力;[镓]镓-FAPI-46是应用最广泛的药物之一。到目前为止,其合成依赖于发生器产生的镓-68。在此,我们提出一种利用液体靶回旋加速器产生的镓-68来制备[镓]镓-FAPI-46的改进方法。 结果:开发了一种[镓]镓-FAPI-46的全自动生产工艺,从锌[质子,中子]镓回旋加速器轰击以提供[镓]氯化镓开始,对[镓]氯化镓进行自动纯化,与前体螯合,以及最终制剂/纯化。产生的活度水平足以满足多次临床研究剂量的需求,最终产品符合所有放行标准。此外,该工艺在4小时有效期时始终提供低于2%的镓-66和镓-67,符合欧洲药典标准。 结论:在GE FASTlab 2模块上进行的自动放射性合成将回旋加速器输出的产物纯化成为[镓]氯化镓,进行标记,配制产品,并在转移至最终小瓶时对产品进行灭菌。以优异的放射化学产率实现了>40毫居里(>1480兆贝克勒尔)的[镓]镓-FAPI-46的生产,所有批次均符合放行标准。
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