ImmunoPET of malignant and normal B cells with  (89)Zr- and (124)I-labeled obinutuzumab antibody fragments reveals differential CD20 internalization in vivo.

CONCLUSIONS: These obinutuzumab-based PET tracers have the ability to noninvasively and quantitatively monitor CD20-expression and have revealed insights into CD20 internalization upon antibody binding in vivo. Because they are based on a humanized mAb they have the potential for direct clinical translation and could improve patient selection for targeted therapy, dosimetry prior to radioimmunotherapy (RIT), and prediction of response to therapy. PMID: 28928164 [PubMed - as supplied by publisher]
Source: Clinical Cancer Research - Category: Cancer & Oncology Authors: Tags: Clin Cancer Res Source Type: research