ivaroxaban and due to this the net clinicalbenefitfavored enoxaparin. Considering that patients in Magellan constituteda heterogeneous group affected by diverse illnesses, a subgroupanalysis is at present ongoing to determine patients whocould be related having a net clinical benefit.Treatment Trials.EINSTEIN-DVT Docetaxel EVALUATION is aphase III clinical trial comparing rivaroxaban, 15 mg POBID for 3 weeks followed by 20 mg every day, versus enoxaparinfollowed by VKA, for 3 to 12 months, in patients with acutesymptomatic DVT. The results showed that rivaroxabanhad noninferior efficacy with respect to the primaryoutcome that was the prevention of symptomatic recurrentDVT. The rate of bleedingwas comparable in between both groups.
EINSTEIN PE can be a phase III clinical trial, Docetaxel completedbut not published however, that compares rivaroxaban 15 mg BIDfor 3 weeks followed by 20mg every day to enoxaparin 40 mg SQBID for a minimum of 5 days, in combination with VKAin the therapy of patients with acute symptomatic PE withor devoid of symptomatic DVT. The main endpoint is thecomposite of recurrent DVT and/or PE occurring throughout the3-, 6-, and 12-month study therapy periods.EINSTEIN-EXTENSION study can be a phase III clinicaltrial developed to assess the efficacy and safety of rivaroxaban20 mg every day for 6 to 12 months, versus placebo in patientswho had completed 6 to 12 months of anticoagulant treatmentfor their acute episode of VTE. The incidence of VTEwas 1.3% versus 7.1% for rivaroxaban and placebo, respectively. The results demonstrated that rivaroxabanwas related to an 82% relative danger reduction inthe recurrence of VTE in this group of patients.
The rateof bleeding for the rivaroxaban group was low and nonstatisticallysignificant.2.2. Apixaban. Gemcitabine Apixaban is another oral, potent, NSCLC reversible,and direct FXa inhibitor that has been tested for VTE treatmentand prophylaxis. It's a very selective drug and likerivaroxaban can inhibit cost-free FXa as well as prothrombinaseactivity. Apixaban has a high oral bioavailability and aftera fast oral absorption within the stomach and small intestine,reaches a Cmax around 1–3 hours soon after administration.Its half-life is 8–15 hours and about 87% is bound toplasma proteins. Apixaban has a multimodal mechanismof elimination. The majority of the drug is excreted in thefeces, other component through CYP3A4-dependent mechanisms in theliver, and one-fourth of the drug is eliminated within the urine.
For this reason Gemcitabine apixaban possibly could possibly be safelyused in patients with renal and hepatic insufficiency; butlike rivaroxaban, its concomitant use with potent CYP3A4inhibitors like ketoconazole and ritonavir, should be avoided.The PT and aPTT are prolonged by the use of apixabanin a concentration-dependent fashion. However; because attherapeutic concentrations the influence of apixaban on the PTand aPTT is minimal, these tests are certainly not sensitive enough forthe monitoring of the drug. In general, if ever needed, anFXa inhibition assay is the finest way to monitor the activity ofapixaban.2.2.1. Clinical Trials of Apixaban in VTE. Apixaban is in theprocess of approval in Europe for prophylaxis soon after majororthopedic surgery. The ADVANCE 1, 2, and 3 trials are thestudies presented to assistance this indication.
Other trials toevaluate apixaban for the prevention of VTE in patients hospitalizedor with metastatic cancer are also ongoing.Primary Prevention Trials.ADVANCE-1 can be a phase IIIstudy that compared apixaban 2.5mg PO BID with enoxaparin30mg SQ BID for prevention of VTE soon after TKR. Bothdrugs were started 12–24 h soon after operation as well as the durationof therapy was 10–14 days. The results Docetaxel showed thatapixaban did not meet the prespecified statistical criteria fornon-inferiority, but its use was associatedwith lower rates of clinically relevant bleeding and it had asimilar adverse-event profile.ADVANCE-2 can be a phase III clinical trial that comparedapixaban 2.5mg PO BIDwithenoxaparin 40 mg dailyfor preventionof VTE soon after TKR.
The results Gemcitabine showed that apixabanhad noninferior efficacy with respect to the main outcomethat was a composite of total VTE plus all-cause mortality. Further, apixaban was associatedwith a comparable danger of bleeding.ADVANCE-3 can be a phase III clinical trial comparingapixaban 2.5mg PO BIDwithenoxaparin 40 mg dailyfor thromboprophylaxisafter THR. The main efficacy outcome,a composite of VTE plus all-cause mortality, occurred in1.4% of the patients within the apixaban group and in 3.9%of the patients within the enoxaparin group. The rates of bleeding inboth groups were comparable. It was concluded that among patientsundergoing hip replacement, thromboprophylaxiswith apixaban, as compared with enoxaparin, was associatedwith lower rates of VTE, devoid of improved bleeding.ADOPT can be a phase III clinical trial, completed but notpublished however, developed to assess the efficacy and safety ofapixaban, 2.5 gmg POBID versus enoxaparin 40 mg SQ dailyfor prophylaxis of VTE in acutely ill healthcare subjects duringand following hospitalization. The main efficacy outcomeis a composit
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