靶向 B 细胞成熟抗原的 PET/CT 显像在多发性骨髓瘤中的应用：一项首次人体研究

B-cell maturation antigen (BCMA)-targeted positron emission tomography/computed tomography (PET/CT) represents a promising tool for the management of multiple myeloma, enabling noninvasive and quantitative evaluation across different disease stages. This novel technique specifically addresses two major diagnostic challenges: the limited specificity of conventional 18 F-FDG PET/CT and the focal sampling constraints of bone marrow biopsies.

In this prospective study, a 68 Ga-labeled nanobody-based BCMA tracer demonstrated improved detection compared with 18 F-FDG PET/CT, effectively visualizing para-medullary, extra-medullary and medullary lesions, as well as minimal residual disease (MRD).

The tracer also reflected dynamic changes in BCMA expression associated with treatment response, underscoring its potential utility for guiding BCMA-targeted interventions, particularly in the era of chimeric antigen receptor T-cell (CAR-T) treatment. These preliminary findings support the potential of BCMA immunoPET as a comprehensive, noninvasive modality for MM evaluation and warrant validation in larger, prospective clinical trials.