lthough they do interact withpotentinhibitors of P-glycoproteinandpotent inhibitors with the cytochrome P450 enzyme CYP3A4.Evidence of primary VTE prevention from clinical trialsThe remainder of this assessment will focus on the publishedevidence from the clinical ALK Inhibitors trial programmes for dabigatranetexilate, rivaroxaban and apixaban, when it comes to theevaluation of their efficacy and safety for the primaryprevention of VTE in individuals undergoing elective hip andknee replacement surgery.Dabigatran etexilateThree phase III clinical trials that form part of the REVOLUTION? study programme undertaken by BoehringerIngelheim happen to be completed and published on theefficacy and safety of dabigatran etexilate for the primaryprevention of VTE following elective hip and kneereplacement surgery.
The three clinical trials ALK Inhibitors hadidentical non-inferiority study designs with a primaryendpoint of a composite of total VTEand all-cause death throughout treatment. Theprimary safety outcome was the occurrence of bleedingduring treatment. Main bleeding throughout the treatmentperiod was defined as: clinically overt bleeding associatedwith ≥20 g/l fall in haemoglobin; clinically overt bleedingleading to a transfusion of ≥2 units of packed cells or wholeblood; fatal, retroperitoneal, intracranial, intraocular orintraspinal bleeding and bleeding warranting treatmentcessation or top to reoperation. The definition of majorbleeding was consistent with all the Committee for ProprietaryMedicinal Products. It is important to note that theassessment of bleeding also integrated surgical web-site bleeds.
All efficacy and safety outcomes were assessed by anindependent, central adjudication committee.The RE-NOVATE? I trial mapk inhibitor randomized 3,494 patientsundergoing total hip replacement surgery to get 28–35 days of either dabigatran etexilate, 220 mgor150 mgonce everyday, or subcutaneous enoxaparin,40 mgonce everyday. The dose of enoxaparinwas equivalent to that utilised routinely within the European Union. The RE-MODEL? trial randomized 2,101 patientsundergoing total knee replacement surgery to get 6–10 days of either dabigatran etexilate, 220 mgor150 mgonce everyday, or subcutaneous enoxaparin,40 mgonce everyday. The third trial, REMOBILIZE?, utilised the North American enoxaparin regimenof 30 mg enoxaparintwice everyday, compared witheither dabigatran etexilate, 220 mgor 150 mgonce everyday for 12–15 days, in individuals undergoing totalknee replacement surgery.
The follow-up period for thesetrials was 12–14 weeks.In both the RE-NOVATE? I and RE-MODEL? trials,dabigatran etexilate demonstrated non-inferiority with theEU dose of enoxaparinfor the primaryefficacy composite outcome of total VTE NSCLC and all-causemortality. In RE-NOVATE? I, 6.7%of the enoxaparin group, compared with 6.0%ofthe dabigatran etexilate 220-mg group and 8.6%of the dabigatran etexilate 150-mg group, skilled aprimary efficacy outcome event. Even though therates with the primary efficacy outcome were greater in theRE-MODEL? trial, as expected for knee replacementsurgery, there were no substantial differences amongst thethree groups: 37.7%of the enoxaparin groupcompared with 36.4%of the dabigatran etexilate220-mg group and 40.5%of the dabigatranetexilate 150-mg group.
In terms of safety, both the RE-NOVATE? I and REMODEL? trials demonstrated comparable significant bleeding ratesfor the two dabigatran etexilate groups along with the enoxaparingroup. In RE-NOVATE? I, significant bleedingoccurred in mapk inhibitor 1.6% with the enoxaparin group, compared with2.0% with the dabigatran etexilate 220-mg group and 1.3% ofthe dabigatran etexilate 150-mg group.Similarly, ALK Inhibitors in RE-MODEL?, significant bleeding eventsoccurred in 1.3% with the enoxaparin group, comparedwith 1.5% with the dabigatran etexilate 220-mg group and1.3% with the dabigatran etexilate 150-mg group.Within the RE-MOBILIZE? trial, when dabigatran etexilatewas compared with theNorth American dose of enoxaparin, itwas related to numerically fewer significant bleeding events,even though it did not statistically achieve non-inferior efficacy,likely because of the 50% greater US dose of enoxaparin utilised inthe study along with the prolonged dosing regimen.
In summary, the three clinical trials described abovedemonstrated that dabigatran etexilate was as efficient asthe EU dose of enoxaparinat preventingVTE and all-cause mortality soon after total hip or total kneereplacement surgery, but much less efficient than the NorthAmerican dose of enoxaparinfollowingknee arthroplasty. The safety mapk inhibitor profile of dabigatran etexilatewas comparable with that of enoxaparin soon after either totalhip or total knee replacement surgery. There were nosignificant differences amongst dabigatran etexilate andenoxaparin when it comes to bleeding outcomes, the incidence ofliver enzyme elevations, along with the incidence of acute coronaryevents either on or off therapy, which suggests there isno rebound activation of coagulation with dabigatran etexilate. A fourth, phase III clinical trial of dabigatran etexilatefor the primary prevention of VTE following elective hipreplacement surgery, RE-NOVATE? II, has recentlybeen c
Wednesday, April 17, 2013
Ten Very Solid Practices Formapk inhibitor ALK Inhibitors
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