Y-mAbs Announces Publication of Preclinical GD2-SADA Data at 2024 ASCO Annual Meeting
The published abstract titled “Preclinical characterization of pretargeted radioimmunotherapy with GD2-SADA, a self-assembling and disassembling bispecific fusion protein” characterizes the binding properties of GD2-SADA across several GD2-expressing cell lines and lanthanide metal-DOTA complexes, while also demonstrating its anti-tumor efficacy when used with Lutetium 177 (Lu177)-DOTA in a two-step approach to pretargeted radioimmunotherapy (“PRIT”).
In this analysis, GD2-SADA showed tight binding to cell lines expressing GD2, a glycolipid implicated in the malignant transformation of multiple solid tumors. GD2-SADA binding was significantly improved by a p53-derived domain that drives the self-assembly and disassembly (“SADA”) of GD2-SADA tetramers, which possess four distinct GD2-binding domains that cumulatively enhance binding. Previous studies have shown that the unbound GD2-SADA protein disassembles over time, facilitating clearance by the kidneys.
“We believe that these data further validate GD2-SADA's promise as a novel targeted radioimmunotherapy and support the continued advancement of our
The analysis further demonstrated high-affinity binding of GD2-SADA to DOTA complexes chelated with lutetium and lanthanum, among other lanthanide metals. By contrast, GD2-SADA showed negligible binding to trace metal-DOTA complexes or empty DOTA, an important consideration for the targeted delivery of the radioactive payload in patients.
“We are especially encouraged by the selective binding of GD2-SADA to lanthanide metal-DOTA complexes with current and emerging applications in the diagnosis and targeted treatment of solid tumors,” said
Taken together, the binding properties of the GD2-SADA protein provide a pharmacological basis for the robust and dose-responsive anti-tumor effects of GD2-SADA Lu177 PRIT in vivo, also presented in this seminal research. These findings have paved the way for the clinical development of GD2-
Y-mAbs will be available for comment at booth #35151 on the Exhibition Floor of
Researchers at MSK, including Dr.
About Y-mAbs
Y-mAbs is a commercial-stage biopharmaceutical company focused on the development and commercialization of novel, radioimmunotherapy and antibody-based therapeutic cancer products. The Company’s technologies include its investigational Self-Assembly DisAssembly (“SADA”) Pretargeted Radioimmunotherapy Platform (“PRIT”) and bispecific antibodies generated using the Y-BiClone platform. The Company’s broad and advanced product pipeline includes the anti-GD2 therapy DANYELZA® (naxitamab-gqgk), the first FDA-approved treatment for patients with relapsed or refractory high-risk neuroblastoma in the bone or bone marrow after a partial response, minor response, or stable disease to prior therapy.
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Source: Y-mAbs Therapeutics, Inc.