ArticleResearch square2023
Targeting GD2-positive Refractory/Resistant Neuroblastoma and Osteosarcoma with Anti- CD3 x Anti-GD2 Bispecific Antibody Armed T cells.
Article in Research square, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT02173093 (Treatment of Neuroblastoma and GD2-Positive Tumors With Activated T Cells Armed With OKT3 X Humanized 3F8 Bispecific Antibodies), which is not on this map. Not yet cited in PubMed.
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Treatment of Neuroblastoma and GD2-Positive Tumors With Activated T Cells Armed With OKT3 X Humanized 3F8 Bispecific Antibodies (GD2Bi): A Phase I/II Study
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0 citing papers in PubMed, 2 citations in OpenAlex.
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15 authors at 5 institutions in 1 country.
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Abstract
Background: Since treatment of neuroblastoma (NB) with anti-GD2 monoclonal antibodies provides a survival benefit in children with minimal residual disease and our preclinical study shows that anti-CD3 x anti-GD2 bispecific antibody (GD2Bi) armed T cells (GD2BATs) were highly cytotoxic to GD2+ cell lines, we conducted a phase I/II study in recurrent/refractory patients to establish safety and explore the clinical benefit of GD2BATs. Methods: The 3+3 dose escalation study (NCT02173093) phase I involved 9 evaluable patients with NB (n=5), osteosarcoma (OST) (n=3), and desmoplastic small round cell tumors (DSRCT) (n=1) with twice weekly infusions of GD2BATs at 40, 80, or 160 x 10 Results: Nine of 12 patients in the phase I completed therapy. There were no dose limiting toxicities (DLTs). All patients developed mild and manageable cytokine release syndrome (CRS) with grade 2-3 fevers/chills, headaches, and occasional hypotension up to 72 hours after GD2BAT infusions. GD2-antibody associated pain was not significant in this study. The median OS for patients in the Phase I and limited Phase II was 18.0 and 31.2 months, respectively, whereas the combined OS was 21.1 months. There was a complete bone marrow response with overall stable disease in one of the phase I patients with NB. Ten of 12 phase II patients were evaluable for response: 1 had partial response. Three additional patients were deemed to have clinical benefit with prolonged stable disease. More than 50% of evaluable patients showed augmented immune responses to GD2+ targets after GD2BATs as measured by interferon-gamma (IFN-γ) EliSpots, Th1 cytokines, and/or chemokines. Conclusions: Our study demonstrated safety of up to 160 x 10
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