正大天晴ADC管線三箭齊發(fā),1類創(chuàng)新藥TQB2101進軍ROR1新賽道
TQB2101是正大天晴自主研發(fā)的一款靶向受體酪氨酸激酶樣孤兒受體1(ROR1)的抗體偶聯(lián)藥物(ADC)。近日,TQB2101首次獲得國家藥品監(jiān)督管理局(NMPA)的臨床試驗?zāi)驹S可,擬用于治療晚期惡性腫瘤,是正大天晴繼HER2 ADC、CLDN18.2 ADC之后,在ADC藥物領(lǐng)域取得的又一里程碑。
近年來,ROR1因其獨特的表達模式及其在腫瘤生物學(xué)中的關(guān)鍵作用, 成為腫瘤治療研究的熱點。正常情況下,ROR1低表達于正常成人組織,而高表達于多種惡性腫瘤,如慢性淋巴細胞白血?。–LL)、急性淋巴細胞白血?。ˋLL)、乳腺癌、卵巢癌、黑色素瘤、肺腺癌等[1-9]。大量數(shù)據(jù)顯示,ROR1在促進腫瘤的生長和轉(zhuǎn)移、誘導(dǎo)腫瘤細胞耐藥和抑制細胞凋亡等方面起到了不可忽視的作用[7-12]。
臨床前研究數(shù)據(jù)顯示,TQB2101在多種ROR1陽性腫瘤模型中展現(xiàn)出抗腫瘤活性,且具有良好的安全性特征。此次獲批的I期臨床試驗將重點評估其在人體內(nèi)的安全性、耐受性、藥代動力學(xué)特性及初步療效。
TQB2101獲批臨床標志著正大天晴在ADC賽道,形成了HER2雙抗ADC、CLDN18.2 ADC之后的第三極創(chuàng)新矩陣。目前,企業(yè)已構(gòu)建涵蓋大分子、小分子及ADC的自研體系,為后續(xù)ADC藥物的開發(fā)提供有力支持。
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