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转移性软组织肉瘤患者的PSMA表达和PSMA PET/CT成像,前性研究的结果

F Kleiburg^1,2, T van der Hulle³, H Gelderblom³

¹Biomedical Photonic Imaging Group, University of Twente, Enschede, The Netherlands. f.kleiburg@lumc.nl.

European journal of nuclear medicine and molecular imaging

|March 27, 2025

概括

前列腺特异性膜抗原 (PSMA) 在一些软组织瘤中表达. 然而,转移性肉瘤中的PSMA成像显示了高度异质的吸收,限制了潜在的PSMA向治疗益处.

科学领域:

在瘤学瘤学.
核医学就是核医学.
放射性药物放射性药物放射性药物

背景情况:

前列腺特异性膜抗原 (PSMA) 表达在软组织瘤的一个子集中被发现,主要是在新血管内皮细胞中.
这项研究调查了PSMA表达和成像在转移性软组织肉瘤中的可行性.

研究的目的:

用免疫组织化学评估转移性软组织肉瘤中的PSMA表达.
评估[18F]-JK-PSMA-7 PET/CT成像在转移软组织肉瘤和高PSMA表达的患者中的可行性.
为在软组织肉瘤中提供潜在的未来PSMA向放射性干疗法提供见解.

主要方法:

对成年患有转移性软组织肉瘤和可测量的疾病的成年患者进行前性单中心研究.
活检/切除材料上的免疫组织化学PSMA染色.
[18F]-JK-PSMA-7 PET/CT成像用于高PSMA表达 (SUVmax>8) 的患者.

主要成果:

在25名患者中,44%的患者在各种类型的肉瘤亚型中表现出高PSMA表达.
在接受[18F]-JK-PSMA-7 PET/CT 的五名患者中,有三名患者在某些病变中显示出足够的标记物吸收 (SUVmax 10.7-16.7).
在转移性病变中高度异质的标记物吸收 (中位数SUVmax = 3.8) 表明PSMA向治疗的益处有限.

结论:

在转移性软组织肉瘤中,PSMA的表达和标记物吸收高度异质.
在这种情况下,对PSMA生物学的进一步研究和精细的患者选择对于PSMA向的放射性干疗法至关重要.

关键词:

在PSMA上,PSMA可以在PSMA上进行交易.在PSMA PET/CT中使用.分子成像分子成像技术前列腺特异性膜抗原前列腺特异性膜抗原软组织肉瘤软组织肉瘤他们是天文学家.

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