Cutting edge research into drug side effects could save NHS money and make more drugs safely available

November 13, 2013

Severe side effects account for one in sixteen NHS hospital admissions and take up four per cent of hospital bed capacity1. Many of these are preventable. Research to better understand drug side effects is now finding solutions that will prevent side effects derailing the development of new drugs, and avoid severe side effects from currently-available drugs.

Today, the MRC Centre for Drug Safety Science2 at the University of Liverpool is launching a public guide, Making Sense of Drug Safety Science3, in collaboration with the charity Sense About Science4. The guide explains why there is no such thing as a 'side effect free drug', and sets out how understanding more about side effects can help us tailor drugs to patients.

Drugs are currently withdrawn from use if there are reports of severe side effects5. This has already included painkillers, anti-diabetic and anti-HIV drugs. Although severe side effects are usually rare, if a drug is withdrawn because one person in 10,000 suffers, that means 9,999 people have to stop using a medicine that works. By first identifying which rare drug side effects can be predicted, researchers can develop tests that will tell doctors which patients can safely be given a drug.

Scientists at the MRC Centre for Drug Safety Science are developing predictive tests to identify those people who will suffer extreme drug side effects. These will also allow the drugs to be given safely to other patients.Comments

Patricia Roberts who suffered from a disease caused by severe drug side effect: "When the symptoms started, I had no idea about Stevens-Johnson Syndrome and that it was caused by the drug I was taking. Although it is rare, it can be fatal in just a few hours so you need immediate treatment. I feel passionately that more people need to know about the enormity of this condition so they can get the right treatment quickly enough; but, most importantly, we need prevention."

***Patient case study is available in full from Sense About Science***

Professor Kevin Park, director of the MRC Centre for Drug Safety Science "Our research is increasing what we know about drug safety and helping us to give people better information about the risks associated with medicines. Improving our understanding of the mechanisms that lead to serious adverse side effects will lead to existing medicines being prescribed more safely and new medicines being developed more effectively. Through this guide we want to share with patients, GPs and other health professionals why drug safety science matters to everyone."

Emily Jesper, co-editor of the guide, Sense About Science: "Experiencing side effects is unpleasant, and not understanding them is frustrating. While it's impossible to have a drug with no side effects, we want to demystify why they happen and what can be done about them."

Martyn Lobley, GP and medical journalist: "Show me a drug with no side effects and I'll show you a drug with no benefits. When you take a medicine you're entering into a bargain. The prescriber, to the best of their knowledge, gives you a medicine that will do you more good than harm, but you have to accept the risk that it may do you more harm than good. For some medicines, we understand the risks and can mitigate them, but for others the knowledge is just not there yet."
For more information, patient case study or interviews contact Emily Jesper, Assistant Director, Sense About Science on on +44 (0)20 7490 9590, out of hours mobile: 07863 140387

Notes to editors

1 Pirmohamed M et al Adverse drug reactions as cause of admission to hospital: prospective analysis of 18,820 patients. BMJ 2004: 329:15-19

2 MRC Centre for Drug Safety Science is a joint venture between the Universities of Liverpool and Manchester to bring together a critical mass of knowledge and technologies in order to advance our understanding of Adverse Drug Reactions.

3 After 00:01 GMT 13th November 2013 an electronic version of the guide will be available to download at

4 Sense About Science is a UK charity that equips people to make sense of evidence and campaigns for sound science and evidence in public life

5. Between 1972 and 1994 Twenty-two products were withdrawn for safety reasons. Jefferys DB et al New active substances authorized in the United Kingdom between 1972 and 1994. Br J Clin Pharmacol 1998; 45:151

6 Patient case study, from a patient with Stevens Johnson Syndrome is available from Sense About Science:

7 McCormack M et al 2011 HLA-A*3101 and carbamazepine-induced hypersensitivity reactions in Europeans. 2011 N Engl J Med 12;1134-43

8 Antoine DJ et al Mechanistic biomarkers provide early and sensitive detection of acetaminophen-induced acute liver injury at first presentation to hospital 2013 Hepatology 58:777-87

9 At 17:00, Wednesday 13th November Professor Kevin Park, Director of the MRC Centre for Drug Safety Science (CDSS), will be launching a public guide: Making Sense of Drug Safety Science, with a drinks reception, from 5pm at the Hub Lounge, Foresight Centre, University of Liverpool 1 Brownlow Street, Liverpool, L69 3GL.

10 Over the past century, the Medical Research Council has been at the forefront of scientific discovery to improve human health. Founded in 1913 to tackle tuberculosis, the MRC now invests taxpayers' money in some of the best medical research in the world across every area of health.

Today, MRC-funded scientists tackle some of the greatest health problems facing humanity in the 21st century, from the rising tide of chronic diseases associated with ageing to the threats posed by rapidly mutating micro-organisms.


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