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68Ga-B7-H3 Nanobody ImmunoPET in Osteosarcoma

Peking University First Hospital · 2026
ClinicalTrials.gov · Datasets · License: Public Domain · 2026
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molecular-imagingosteosarcomapet-ctrecurrent
This study aims to evaluate the safety, feasibility, and imaging performance of a novel 68Ga-labeled B7-H3 nanobody for immunoPET imaging in patients with osteosarcoma. Participants with suspected or histologically confirmed osteosarcoma will undergo 68Ga-B7-H3 nanobody PET/CT imaging according to the study protocol. Imaging findings will be compared with conventional imaging and, when available, histopathological results. The study will assess tracer biodistribution, tumor uptake, lesion detectability, and safety to determine the potential clinical value of B7-H3-targeted immunoPET for the diagnosis and evaluation of osteosarcoma.
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