Abstract

AbstractARBs less effective than ACE inhibitors?The efficacy of angiotensin‐II receptor blockers (ARBs) in preventing cardiovascular events in high‐risk patients has been challenged by the findings of a large randomised trial (Lancet 2008 published online; doi 10.1016/ S0140‐6736(08)61242‐8).In the TRANSCEND trial, 5926 patients with cardiovascular disease or diabetes with end‐organ damage who could not tolerate ACE inhibitor therapy were randomised to placebo or telmisartan (Micardis) 80mg per day in addition to standard therapies. After 56 months, mean blood pressure was lower with telmisartan (by 4.0/2.2mmHg) but there were no significant differences between telmisartan and placebo in the risk of cardiovascular events — a composite of cardiovascular death, myocardial infarction, stroke, or hospitalisation for heart failure. Hospitalisation for cardiovascular reasons were slightly but significantly reduced by telmisartan (33 vs 30 per cent).MHRA: fentanyl patch errors potentially fatalErrors in dosing, accidental exposure and enhanced absorption from heat exposure have resulted in life‐threatening and fatal incidents with transdermal fentanyl, warns the MHRA in its latest Drug Safety Update (September 2008). There is also evidence that fentanyl patches are being prescribed for nonlicensed indications, including treatment of opioid‐naive patients.Other topics in this issue include managing adverse reactions to HPV vaccine and an update on new cases of progressive multifocal leucoencephalopathy associated with natalizumab (Tysabri).Call for DURG researchThe Drug Utilisation Research Group is inviting abstracts for oral and poster presentations at its 20th annual meeting on 5 February 2009. The theme of the morning session is ‘Whose prescribing budget is it anyway?’.Abstracts will be accepted on any drug utilisation research studies and will be published in the Journal of Pharmacoepidemiology and Drug Safety. Information is available at www.durg.org.uk the deadline for submissions is 1 December.Early bromocriptine no benefit in Parkinson'sInitiating treatment of Parkinson's disease with the dopamine agonist bromocriptine offers no long‐term benefit compared with levodopa, the UK Parkinson's Disease Research Group trial has shown (Neurology 2008;71:474‐80).After 14 years' follow‐up of 166 patients, there were no differences in the prevalence of motor complications, dementia or mortality, but levodopa was associated with superior scores of disability and physical functioning. The authors say the belief that early dopamine agonist treatment is neuroprotective in Parkinson's disease should be abandoned.Ezetimibe with statin cancer risk ‘not credible’Analysis of data pooled from two large trials provides ‘no credible evidence’ that ezetimibe (Ezetrol) is associated with an increased risk of cancer when added to statin therapy (N Engl J Med 2008 published online; doi 10.1056/NEJMsa0806603).A possible link with increased risk of cancer with ezetimibe plus simvastatin was suggested by the SEAS trial (N Engl J Med 2008 published online; doi 10.1056/NEJMoa 0804602). This hypothesis was tested in two trials involving more than 20 500 patients over 1.0‐2.7 years. There was no excess of cancer overall or at particular sites; cancer deaths were more numerically but not significantly higher with ezetimibe and there was no evidence of increased risk with duration of treatment.Telmisartan provides no advantage after strokeAdding telmisartan (Micardis) to standard treatment after ischaemic stroke does not reduce morbidity, US investigators report (N Engl J Med 2008 published online; doi 10.1056/NEJMoa 0804593).A total of 20 332 patients with recent ischaemic stroke were randomised to placebo or telmisartan 80mg per day in addition to antiplatelet therapy and antihypertensive agents. After 2.5 years, blood pressure was 3.8/2.0mmHg lower in patients taking telmisartan but there were no significant differences from placebo in the risks of recurrent stroke, cardiovascular events or new‐onset diabetes. Copyright © 2008 Wiley Interface Ltd

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