A senior executive with GlaxoSmithKline, one of the world’s largest pharmaceutical companies, has admitted that most Big Pharma drugs do not work for the majority of people.
Allen Roses, worldwide vice-president of genetics at GlaxoSmithKline (GSK), said less than half of the patients prescribed some of the most expensive Big Pharma drugs actually gained any benefit from them.
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It is an open secret within the pharmaceutical industry that most of its products are ineffective in most patients but this is the first time that such a senior Big Pharma executive has gone public.
The Independent reports: Dr Roses, an academic geneticist from Duke University in North Carolina, spoke at a recent scientific meeting in London where he cited figures on how well different classes of drugs work in real patients.
Drugs for Alzheimer’s disease work in fewer than one in three patients, whereas those for cancer are only effective in a quarter of patients. Drugs for migraines, for osteoporosis, and arthritis work in about half the patients, Dr Roses said. Most drugs work in fewer than one in two patients mainly because the recipients carry genes that interfere in some way with the medicine, he said.
“The vast majority of drugs – more than 90 per cent – only work in 30 or 50 per cent of the people,” Dr Roses said. “I wouldn’t say that most drugs don’t work. I would say that most drugs work in 30 to 50 per cent of people. Drugs out there on the market work, but they don’t work in everybody.”
Some industry analysts said Dr Roses’s comments were reminiscent of the 1991 gaffe by Gerald Ratner, the jewellery boss, who famously said that his high street shops are successful because they sold “total crap”. But others believe Dr Roses deserves credit for being honest about a little-publicised fact known to the drugs industry for many years.
“Roses is a smart guy and what he is saying will surprise the public but not his colleagues,” said one industry scientist. “He is a pioneer of a new culture within the drugs business based on using genes to test for who can benefit from a particular drug.”
Dr Roses has a formidable reputation in the field of “pharmacogenomics” – the application of human genetics to drug development – and his comments can be seen as an attempt to make the industry realise that its future rests on being able to target drugs to a smaller number of patients with specific genes.
The idea is to identify “responders” – people who benefit from the drug – with a simple and cheap genetic test that can be used to eliminate those non-responders who might benefit from another drug.
This goes against a marketing culture within the industry that has relied on selling as many drugs as possible to the widest number of patients – a culture that has made GSK one of the most profitable pharmaceuticals companies, but which has also meant that most of its drugs are at best useless, and even possibly dangerous, for many patients.
Dr Roses said doctors treating patients routinely applied the trial-and-error approach which says that if one drug does not work there is always another one. “I think everybody has it in their experience that multiple drugs have been used for their headache or multiple drugs have been used for their backache or whatever.
“It’s in their experience, but they don’t quite understand why. The reason why is because they have different susceptibilities to the effect of that drug and that’s genetic,” he said.
“Neither those who pay for medical care nor patients want drugs to be prescribed that do not benefit the recipient. Pharmacogenetics has the promise of removing much of the uncertainty.”
Therapeutic area: drug efficacy rate in per cent
- Alzheimer’s: 30
- Analgesics (Cox-2): 80
- Asthma: 60
- Cardiac Arrythmias: 60
- Depression (SSRI): 62
- Diabetes: 57
- Hepatits C (HCV): 47
- Incontinence: 40
- Migraine (acute): 52
- Migraine (prophylaxis)50
- Oncology: 25
- Rheumatoid arthritis50
- Schizophrenia: 60
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