英文药名: Vectibix (Panitumumab Injection) 中文药名: 维克替比(帕尼单抗注射剂) 生产厂家: Amgen Inc 药品介绍 结直肠癌治疗药Vectibix(panitumumab、帕尼单抗)是第一个完全人源化单克隆抗体,其靶向作用于表皮生长因子受体(EGFR)。2005年7月,Panitumumab获得FDA快速通道审批资格。2005年底,安进公司及其合作伙伴Abgenix公司共同向FDA提交了该品生物制剂许可申请,用于治疗化疗失败后转移性结直肠癌。 【关于该药】 【药物试验】 【副作用】 【商品名】: 维克替比 Vectibix 【药品说明】 目前,帕尼单抗也在进行单用或合用其他抗肿瘤药物治疗各类型肿瘤,包括结肠直肠癌、肺癌和肾癌等的多项临床试验。另外,帕尼单抗亦在进行合用化疗药物和Genentech有限公司的结肠直肠癌治疗药物倍伐单抗(Bevacizumab,Avastin)治疗早期阶段结肠直肠癌患者的临床研究。 【原产地英文商品名】VECTIBIX 400mg/20ml/Vial Vectibix (Panitumumab) Developed by Amgen, Inc. Vectibix Received Accelerated Approval For The Treatment Of Recurrent And Progressive Colorectal Cancer In September, 2006. The Targeted Drug May Be Prescribed to Patients Whose Cancer Progressed After Treatment With Three Leading Chemotherapy Drugs (Camptosar, Eloxatin and Either Capecitabine, Floxuridine or 5-FU). Treatment With Vectibix Is Limited To A Virulent Form Of Colorectal Cancer. The Anti-Cancer Agent May Be Prescribed To Treat Colorectal Tumors That Produce A Cancer-Promoting Protein, Referred To As The Epidermal Growth Factor Receptor (EGFR), Excessive Levels Of EGFR Have Been Documented In Many Types Of Cancer, And Convey A Poor Prognosis. The Effectiveness of Vectibix Is Dependent On The Genetic Characteristics Of A Colorectal Tumor. Research Studies Have Established That Only Tumors That Contain Normal K-RAS And BRAF Genes Respond To Vectibix. Vectibix Has Been Priced Competitively Against Erbitux, The First Targeted Drug For Colorectal Cancer. Amgen, Inc. Priced Vectibix At $4,000 Per Infusion At The Time The Drug Entered The Market. The Cost Of The Newly-Authorized Drug Was 20 Percent Lower Than The Price Of Erbitux. An International Research Trial Is Now Comparing The Effectiveness Of Vectibix and Erbitux In the Treatment Of Colorectal Cancer. Both Drugs Produce The Same Anti-Cancer Effect By Targeting EGFR. Ongoing Colorectal Cancer Trials Are Evaluating Vectibix In Combination With Other Targeted Drugs, Such As Avastin, Afinitor and Tarceva. Vectibix Also Is Under Investigation In Combination With Widely-Used Chemotherapy Drugs, Including Camptosar And Eloxatin. Vectibix Targets A Cancer-Promoting Protein, Referred To As The Epidermal Growth Factor Receptor (EGFR). The Vital Protein Is Produced In Many Normal Tissues, Such As Skin Cells And Hair Follicles. Elevated Levels of EGFR Have Been Detected in Several Types of Cancer, Including Lung, Brain, And Anal Cancer. And Are Associated with A Dire Prognosis. An Estimated 60 to 80 Percent of Colon Cancers Have Excessive Levels of EGFR. Vectibix Binds to the Epidermal Growth Factor Receptor (EGFR), Thereby Restricting The Proliferation of Cancerous Cells. FDA Approval Vectibix Became the Third Targeted Drug Authorized for the Treatment of Colorectal Cancer In September, 2006. Both Erbitux and Avastin Became Available For Clinical Use In 2004. Vectibix Received Accelerated Approval For The Treatment Of Colorectal Cancer That Failed To Respond To Three Leading Chemotherapy Drugs (Camptosar, Eloxatin And Either 5-FU, Capecitabine or Floxuridine). The Targeted Drug May Be Administered To Treat Colorectal Tumors That Produce A Critical Protein, Referred To As The Epidermal Growth Factor Receptor (EGFR), A Phase III Clinical Trial Concluded That Vectibix Delayed The Progression Of Colorectal Cancer That Failed To Respond To Standard Chemotherapy. The International Research Trial Evaluated 463 Patients With Metastatic Colorectal Cancer. All Patients Had Been Unsuccessfully Treated With Three Commonly-Used Chemotherapy Drugs (Camptosar, Eloxatin And Either 5-FU, Capecitabine or Floxuridine). Vectibix Was Administered To 231 Patients Enrolled In The Trial; The Remaining Patients Received The Best Supportive Care Available. The Progression Of Cancer Was Delayed More Than A Month Longer In Patients Treated With Vectibix. Progression-Free Survival Rates Were 96 Days For Participants Treated With Vectibix, Compared to 60 Days For Patients Who Received The Best Supportive Care. No Difference In Overall Survival Rates Was Reported. Treatment With Vectibix Also Did Not Extend The Time Until Cancer Growth Resumed. The Time Until Cancer Progressed was Approximately Eight Weeks For Both The Treatment And Control Groups. Vectibix Produced Partial Remission In 19 patients (Equivalent To Eight Percent Of Enrollees). The Median Duration Of Remission Was 17 Weeks. The Most Severe Complications Associated With Vectibix Were Pulmonary Fibrosis (Scarring Of The Lungs), Acute Dermatological Toxicity (Skin Rash Complicated By Infections), Infusion Reactions and Abdominal Pain. Common Side Effects Included: Skin Rashes, Low Levels Of Magnesium, Soft Tissue Infection Around the Fingernails, Fatigue, Abdominal Pain, Nausea And Diarrhea. |