編者按:隨著新型ADC藥物的出現(xiàn),,乳腺癌治療領(lǐng)域也捷報(bào)頻傳,。2022年ASCO大會(huì)上,Destiny-Breast 04研究(以下簡(jiǎn)稱“DB-04研究”)結(jié)果的公布,,使我們的目光聚焦于HER2低表達(dá)患者,,隨之而來(lái)的HER2低表達(dá)人群相關(guān)診斷及治療問(wèn)題也備受關(guān)注。由中國(guó)醫(yī)學(xué)科學(xué)院腫瘤醫(yī)院袁芃教授主持編纂的《中國(guó)HER2低表達(dá)乳腺癌臨床診療共識(shí)》將于近日發(fā)布,,該共識(shí)是第一個(gè)針對(duì)于HER2低表達(dá)乳腺癌患者治療的專家共識(shí),。為此,《腫瘤瞭望》特邀采訪了袁芃教授,,請(qǐng)她就相關(guān)內(nèi)容及HER2低表達(dá)患者的診療進(jìn)行介紹,。 HER2低表達(dá)下限定義仍不明確 HER2表達(dá)具有高度異質(zhì)性 HER2低表達(dá)在不同病理醫(yī)生間判讀一致性較低 病理檢測(cè)流程環(huán)節(jié)眾多,,影響因素錯(cuò)綜復(fù)雜 此外,國(guó)內(nèi)的ADC藥物也在HER2低表達(dá)人群中進(jìn)行了積極嘗試,。 2021年ASCO大會(huì)報(bào)道了維迪西妥單抗(RC48)針對(duì)兩項(xiàng)Ⅰ期研究的合并分析23,,旨在探究其在HER2陽(yáng)性或HER2低表達(dá)亞組中的有效性和安全性。其中大約40%的患者為HER2低表達(dá)患者,。在HER2低表達(dá)亞組中,,ORR和mPFS分別為39.6%(95%CI:25.8%,54.7%)和5.7個(gè)月(95%CI:4.1,,8.3),,這也是一個(gè)很有前景的治療藥物。由徐兵河院士牽頭的評(píng)價(jià)維迪西妥單抗治療HER2低表達(dá)局部晚期或轉(zhuǎn)移性乳腺癌有效性和安全性的III期臨床研究(CTR20200646)也正在進(jìn)行中,。 MRG002是我國(guó)自主研發(fā)的抗HER2 ADC新藥,。今年ASCO大會(huì)上報(bào)道了其在HER2低表達(dá)人群中II期臨床試驗(yàn)的數(shù)據(jù)24。入組患者50.0%接受過(guò)至少2線化療,,中位治療線數(shù)為3線,。截止至2021年12月31日,,共有56例患者入組,49例可評(píng)價(jià)患者的ORR和DCR分別為34.7%和75.5%,。MRG002同樣在HER2低表達(dá)患者中顯示出了治療效果,。 袁芃 教授 國(guó)家癌癥中心 中國(guó)醫(yī)學(xué)科學(xué)院腫瘤醫(yī)院 特需醫(yī)療部副主任 主任醫(yī)師,教授,,博士生導(dǎo)師 中國(guó)抗癌協(xié)會(huì)理事 中國(guó)抗癌協(xié)會(huì)國(guó)際醫(yī)療與交流分會(huì)主任委員 中國(guó)抗癌協(xié)會(huì)乳腺癌專業(yè)委員會(huì)常委 中國(guó)臨床腫瘤學(xué)會(huì)乳腺癌專家委員會(huì)常委 中國(guó)醫(yī)師協(xié)會(huì)腫瘤學(xué)分會(huì)乳腺癌學(xué)組主任委員 北京癌癥防治學(xué)會(huì)理事長(zhǎng) 國(guó)家自然科學(xué)基金評(píng)審專家 參考文獻(xiàn):(滑動(dòng)查看) [1] Shui R, Liang X, Li X, et al. 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