中國生物製藥(01177.HK)KRAS G12C抑制劑"GARSORASIB(D-1553片)"II期臨牀研究結果發表於《柳葉刀-呼吸病學》
格隆匯6月11日丨中國生物製藥(01177.HK)宣佈,集團聯合開發的KRAS G12C抑制劑"garsorasib(D-1553片)"的II期註冊臨牀研究結果已發表於國際著名期刊《柳葉刀-呼吸病學》(The Lancet Respiratory Medicine,IF:76.2)。這是國產KRAS G12C抑制劑首次登上《柳葉刀》系列雜誌。
研究方法
本次刊登在《柳葉刀-呼吸病學》的研究是一項在中國進行的開放標籤、多中心、II期單臂註冊研究(NCT05383898),旨在評估garsorasib在KRAS G12C突變的局部晚期或轉移性非小細胞肺癌(NSCLC)患者中的有效性和安全性。
主要入選標準有:KRAS G12C突變的局部晚期或轉移性NSCLC患者;既往經抗PD-(L)1治療和含鉑化療後疾病進展或因毒性不耐受上述治療;並根據RECIST v1.1標準具有可測量病灶。主要終點是由盲態獨立審查委員會(IRC)根據RECIST v1.1評估的客觀緩解率(ORR)。次要終點包括緩解持續時間(DOR)、疾病控制率(DCR)、至緩解時間(TTR)、無進展生存期(PFS)、總生存期(OS),安全性和羣體藥代動力學。
研究結果
截至2023年11月17日,共有123例患者入組並接受garsorasib 600mg一日兩次(BID)治療。其中,108例患者(88%)為男性,患者中位年齡為64歲(四分位距:59-68),ECOG PS評分為0和1的患者分別佔11%和89%。截至數據截止日,82例(67%)患者終止了治療。中位隨訪時間為7.9個月(四分位距:6.3-10.4)。
在療效方面,1例患者完全緩解,60例患者部分緩解,48例患者疾病穩定。IRC確認的ORR為50%(61/123,95% CI,41-59),DCR為89%(109/123,95% CI,82-94)。中位DOR為12.8個月(95% CI,6.2-NE)。中位PFS為7.6個月(95% CI,5.6-9.7),中位OS尚未達到。
在安全性方面,共有117例(95%)患者報吿了治療相關不良事件(TRAE),其中61例(50%)患者出現了3級或以上的不良事件。最常報吿(≥20%)的TRAE(任何級別)為天門冬氨酸氨基轉移酶升高、丙氨酸氨基轉移酶升高、γ-谷氨酰轉移酶升高、貧血、血膽紅素升高、血礆性磷酸酶升高、嘔吐和噁心。分別有37例(30%)、51例(41%)患者因TRAE導致劑量減少、劑量中斷。沒有患者因TRAE停止治療。未發現新的安全性信號,大多數不良事件都得到了很好的控制。
研究結論
在攜帶KRAS G12C突變的NSCLC患者中,garsorasib顯示出較高的腫瘤緩解率和較長的緩解持續時間(ORR:50%,DCR:89%,中位DOR:12.8個月,中位PFS:7.6個月),以及良好的耐受性和可控性。
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