Erwinase获准用于治疗对大肠杆菌源性天门冬酰胺酶过敏的急性淋巴细胞性白血病患者
2011年11月18日,EUSA制药和美国食品药品管理局(FDA)宣布孤儿药Erwinase(欧文氏菌源性的天门冬酰胺酶)获准用于治疗对大肠杆菌源性的天门冬酰胺酶有超敏反应的急性淋巴细胞性白血病(ALL)患者。
ERWINAZE (天门冬酰胺酶 菊欧氏杆菌[Erwinia chrysanthemi]) 为肌肉注射使用。
2011年美国初始批准
制造商: 埃克森(美国)制药公司(美国)公司
类药物: 门冬酰胺酶的特定酶。
活性成分(S): 天门冬酰胺欧文氏菊10,000 IU,每小瓶; PWD冻干重组后的IM注射。 指示(S): 由于多代理的化疗方案治疗急性淋巴细胞白血病患者(ALL)的,谁开发大肠杆菌衍生门冬酰胺酶过敏的一个组成部分。
药理: 天门冬酰胺欧文氏菊催化deamidation天门冬氨酸和氨的天冬酰胺,从而导致循环的天门冬素水平下降。
Erwinaze行动的机制被认为是基于对白血病细胞不能合成天冬酰胺,由于缺乏门冬酰胺合成酶的活性,导致在上取决于其蛋白质代谢的氨基酸天门冬素外源性来源的白血病细胞的特定的细胞毒性和生存。
临床试验: 在研究1,单臂,多中心,开放标签,安全性和临床试验证明Erwinaze的安全性和有效性。研究1招收国立癌症研究所(NCI)赞助合作组中的所有协议无法继续接受pegaspargase由于过敏反应治疗的患者。主要结果测量是实现一个血清谷天门冬酰胺酶的水平≥0.1 IU / mL的患者比例的决心。血清谷天门冬酰胺酶的活性≥0.1 IU / mL的已被证明是关联枯竭与天冬酰胺(天冬酰胺<0.4mcg/mL或3μm的)和预测临床疗效的血清。
五十八名这48例患者,在研究1,1当然根据药代动力学样品的可用性的主要成果衡量评价。患者给予Erwinaze为两个星期(共6个剂量)25000 IU/m2肌注作为更换每个pegaspargase定剂量原来的治疗协议的剩余。会见后,第三剂量的研究1其主要结果表明,100%的患者达到血清谷天门冬酰胺浓度测量≥0.1 IU /毫升(N = 35)在48小时或72小时(N = 13)。在一项探索性的分析,80%的人(28/35)在48小时和38%(5 / 13)在72小时内评估了血清天门冬酰胺酶的活性水平≥0.4 IU / mL的评估。
法律分类: 接收
禁忌(S): 严重的胰腺炎史,血栓形成,出血事件与之前的L -天冬酰胺酶治疗。
成年人和儿童: 给由IM注射(最大2mL/inj网站)。要取代一个pegaspargase剂量:25000 IU/m2每周三次(M / W / F)6剂量为每个计划的pegaspargase剂量。为了取代了原生大肠杆菌天门冬酰胺剂量:25,000 IU/m2为每个计划的原生大肠杆菌内治疗天门冬酰胺剂量。
警告/注意事项: 有复苏设备和其他必要的治疗过敏性休克的代理。停止,如果发生严重的过敏反应。监测胰腺炎;停止,如果表现> 72hrs和淀粉酶的海拔≥2XULN发生腹痛严重或出血性胰腺炎。隐瞒,如果轻度胰腺炎的治疗可能恢复后的决议。在基线和治疗期间监测血糖水平。停止如果发生血栓或出血事件;可能恢复后的决议。怀孕(Cat.C)。哺乳的母亲:不推荐。
不良反应(S): 严重的过敏反应(如过敏性休克,过敏,荨麻疹),胰腺炎,转氨酶异常,凝血功能异常(如血栓形成,出血),高血糖,发热,胃肠不适。
如何提供: 样品瓶- 5
最后更新: 二○一一年十二月一十六日
Erwinaze获准用于治疗急性淋巴细胞性白血病
2011年11月18日,EUSA制药和美国食品药品管理局(FDA)宣布孤儿药Erwinaze(欧文氏菌源性的天门冬酰胺酶)获准用于治疗对大肠杆菌源性的天门冬酰胺酶有超敏反应的急性淋巴细胞性白血病(ALL)患者。
Erwinaze是一种可降低循环血液中天门冬酰胺水平的天门冬酰胺酶。天门冬酰胺是细胞生长的必需氨基酸,将其从血液中清除可抑制ALL相关细胞的生长。天门冬酰胺酶产品来源于细菌,近15%~20%的患者可对大肠杆菌源性的现代制剂产生超敏反应因而无法持续治疗。Erwinaze是由欧文氏菌产生的,在免疫学性质上有别于原有的制剂,适用于对大肠杆菌源性治疗有超敏反应的患者。
FDA批准Erwinaze是基于相关的多项临床试验结果,共涉及630例ALL患者。在一项纳入58名受试者的关键性疗效研究中,100%的可评估患者达到了天门冬酰胺酶活性主要终点。
Erwinaze治疗引起的不良反应包括过敏反应、胰腺炎、转氨酶和胆红素水平升高、血栓形成、出血、高血糖症、恶心和呕吐。
ERWINAZE
Manufacturer:
EUSA Pharma (USA), Inc.
Pharmacological Class:
Asparaginase specific enzyme.
Active Ingredient(s):
Asparaginase Erwinia chrysanthemi 10,000 IU; per vial; lyophilized pwd for IM inj after reconstitution.
Indication(s):
As a component of a multi-agent chemotherapeutic regimen for the treatment of patients with acute lymphoblastic leukemia (ALL) who have developed hypersensitivity to E. coli-derived asparaginase.
Pharmacology:
Asparaginase Erwinia chrysanthemi catalyzes the deamidation of asparagine to aspartic acid and ammonia, resulting in a reduction in circulating levels of asparagine.
The mechanism of action of Erwinaze is thought to be based on the inability of leukemic cells to synthesize asparagine due to lack of asparagine synthetase activity, resulting in cytotoxicity specific for leukemic cells that depend on an exogenous source of the amino acid asparagine for their protein metabolism and survival.
Clinical Trials:
The safety and efficacy of Erwinaze was demonstrated in Study 1, a single-arm, multi-center, open-label, safety and clinical trial. Study 1 enrolled patients treated on National Cancer Institute (NCI)-sponsored cooperative group ALL protocols who were unable to continue to receive pegaspargase due to hypersensitivity reactions. The main outcome measure was determination of the proportion of patients who achieved a serum trough asparaginase level ≥0.1 IU/mL. Serum trough asparaginase activity ≥0.1 IU/mL has been demonstrated to correlate with asparagine depletion (asparagine <0.4mcg/mL or 3µM) and to serum levels that predict clinical efficacy.
Fifty-eight patients were enrolled in Study 1, of these 48 were evaluable for the main outcome measure based on availability of pharmacokinetic samples in course 1. Patients were given Erwinaze 25,000 IU/m2 intramuscularly for two weeks (total 6 doses) as a replacement for each scheduled dose of pegaspargase remaining on their original treatment protocol. Study 1 met its main outcome measure of demonstrating that 100% of patients achieved serum trough asparaginase concentrations ≥0.1 IU/mL at 48 hours (n=35) or 72 hours (n=13) after the third dose. In an exploratory analysis, 80% (28/35) of those evaluated at 48 hours and 38% (5/13) evaluated at 72 hours had serum asparaginase activity levels ≥0.4 IU/mL.
Legal Classification:
Rx
Contraindication(s):
History of serious pancreatitis, thrombosis, hemorrhagic events with prior L-asparaginase therapy.
Adults & Children:
Give by IM inj (max 2mL/inj site). To substitute for a pegaspargase dose: 25,000 IU/m2 three times weekly (M/W/F) for 6 doses for each planned pegaspargase dose. To substitute for a native E. coli asparaginase dose: 25,000 IU/m2 for each scheduled native E. coli asparaginase dose within a treatment.
Warnings/Precautions:
Have resuscitation equipment available and other agents necessary to treat anaphylaxis. Discontinue if serious hypersensitivity reactions occur. Monitor for pancreatitis; discontinue if severe or hemorrhagic pancreatitis manifested by abdominal pain >72hrs and amylase elevation ≥2XULN occurs. Withhold therapy if mild pancreatitis; may resume after resolution. Monitor glucose levels at baseline and during therapy. Discontinue if thrombotic or hemorrhagic event occurs; may resume after resolution. Pregnancy (Cat.C). Nursing mothers: not recommended.
Adverse Reaction(s):
Serious allergic reactions (eg, anaphylaxis, hypersensitivity, urticaria), pancreatitis, abnormal transaminases, coagulation abnormalities (eg, thrombosis, hemorrhage), GI upset, hyperglycemia, fever.
How Supplied:
Vials—5
|