ETx-22, a Novel Nectin-4-Directed Antibody-Drug Conjugate, Demonstrates Safety and Potent Antitumor Activity in Low-Nectin-4-Expressing Tumors.

IF 2 Q3 ONCOLOGY
Marc Lopez, Emerence Crompot, Emmanuelle Josselin, Anne Farina, Marion Rubis, Remy Castellano, Joanna Fares, Maria Wehbe, Yves Collette, Emmanuelle Charafe, Stéphanie Blanchin, François Romagne, Anikó Pálfi, Torsten Hechler, Andreas Pahl, Hatem A Azim, Florence Lhospice, Emilie Mamessier, François Bertucci, Jack Elands, Xavier Préville, Daniel Olive
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Abstract

Significance: ETx-22, a novel ADC combining a tumor nectin-4-specific antibody and an innovative linker to exatecan, demonstrates significant and durable responses in low-target-expressing tumor models that are resistant to MMAE-based EV and has a better toxicity profile. This new ADC has the potential to benefit additional patient populations beyond its current indication.

ETx-22:一种新型的连接蛋白-4导向抗体药物共轭物,在低连接蛋白-4表达的肿瘤中显示出安全性和强大的抗肿瘤活性。
Nectin-4 是一种细胞粘附分子,在包括尿道癌在内的许多实体瘤中都有不同程度的表达。Enfortumab vedotin 是一种抗连接蛋白-4-MMAE ADC,已被批准用于晚期尿路上皮癌患者,为了减少 Enfortumab vedotin 观察到的靶向皮肤毒性,ETx-22 的开发选择了 15A7.5,这是一种抗连接蛋白-4 单克隆抗体,在肿瘤和原发性角朊细胞之间表现出不同的连接蛋白-4 结合。有效载荷选择了拓扑异构酶 I 抑制剂 Exatecan。ETx-22 ADC 在各种表达低至高水平内皮素-4 的患者异种移植模型中,以及在 MonoMethyl Auristatin-E 耐药性异种移植模型中,都能诱导快速、持久的肿瘤消退。在非人灵长类动物体内,ETx-22 的最高非剧毒剂量超过 20 毫克/千克,且无严重的皮肤毒性症状。ETx-22 是治疗表达 nectin-4 的肿瘤(包括对恩福单抗维多汀治疗产生耐药性的肿瘤)患者的一种重要疗法。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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