包装规格:250毫克/片 60片/盒
计价单位:盒
生产厂家: 默克生物制药
商品名: Tepmetko
药品名: 盐酸替波替尼水合物 (Tepotinib Hydrochloride Hydrate)
储存: 室温保存,避免受潮,有效期24个月。
Tepmetko特泊替尼适应症
MET基因外显子14跳突变阳性不可切除进展和复发的非小细胞肺癌

Tepmetko特泊替尼作用机制
盐酸替波替尼是一种低分子化合物,对间质上皮转化因子(MET)具有抑制作用,是受体酪氨酸激酶。 盐酸替波替尼抑制MET的磷酸化,通过抑制下游信号转导,被认为表现出肿liu生长抑制作用。
Tepmetko特泊替尼剂量和给药-方法
1.推-荐剂量
500mg每天一次,餐后口服。在1期临床试验中,z高爬坡到1400mg每天一次,仍不是z大耐受剂量。
2.剂量调整
如果因不良反应需要减量,可减量-250mg每天一次。如果仍无法耐受250mg每天一次,停药。对于不同类型和级别的不良反应减量方法见表1。
Tepmetko特泊替尼不良反应和注意事项
1.间质性肺病/肺炎
在VISON临床试验中,3.8%的患者发生间质性肺病/肺炎。如果发现患者出现间质性肺病/肺炎的症状,如呼吸困难、咳嗽和发烧等,及时去医院检查和治-疗。
2.肝毒性
在VISON临床试验中,13.1%的患者发生ALT、AST、γ-GTP或ALP升高。重度肝功能损害患者禁止服用Tepotinib。服药前需检查肝功能,服药期间定期复查。
3.外周水肿
在VISON临床试验中,发现肢端水肿,低蛋白血症和胸水等体液潴留不良反应。如果在服药期间发现体重明-显增加或呼吸困难等异常情况,及时去医院检查和治-疗。
4.胚胎-胎儿毒性
动物试验显示,Tepotinib有胚胎-胎儿毒性。患者和伴侣应在服药期间和停药一周内,使用有效的避孕措施。
5.肾毒性
在VISON临床试验中,发现血肌酐升高(13.8%),肾功能不全(2.3%)和急性肾损害(1.5%)等不良反应。服药前需检查肾功能,服药期间定期复查。
6.常见不良反应
在VISON临床试验中,常见不良反应(≥5%)有:周围性水肿(48.3%)、恶心(23%)、腹泻(20.7%)、血肌酐升高(12.6%)、乏力(9.2%)、淀粉酶增加(8%)、ALT升高(6.9%)、AST升高(5.7%)和低白蛋白血症(5.7%)等。
常见3级不良反应有:周围性水肿(8%)、淀粉酶增加(2.3%)、ALT升高(2.3%)、腹泻(1.1%)、无力(1.1%)和AST升高(1.1%)。
没有4级或5级治-疗相关不良反应发生。
其他治-疗相关不良反应包括:脂肪酶增加(4.6%)、疲劳(3.4%)、呕吐(3.4%)。有4名患者因药-物相关不良反应停用Tepotinib。
Tepmetko特泊替尼药代动力学
1.Tepotinib片是盐酸盐,分子量547.05克每摩尔,白色粉末。
2.250mgTepotinib片相当于277.5mgTepotinib盐酸盐。
3.Tepotinib在小鼠脑组织中的游离血药浓度为血液中的25%,提示它有较强的穿透血脑屏障能力。
4.Tepotinib服药8-10小时后达到血药浓度峰值,平均半衰期为46小时,达到稳态后血药浓度蓄积倍数为3.3。血浆蛋白结合率98%,表观清-除率26.43升每小时。
5.空腹口服Tepotinib时,血药浓度波动很大,因此采用随餐口服。
6.Tepotinib主要通过肝CYP3A4酶和CYP2C8酶代谢。轻度肝功能损害对Tepotinib的代谢没有影响,中度肝功能损害患者服用Tepotinib的Cmax增加29%,AUC增加12.1%。Tepotinib是一种P-gp和BCRP的底物。
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