Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Smokers with gene defect have 1 in 4 chance of developing lung cancer

02.06.2014

Around a quarter of smokers who carry a defect in the BRCA2 gene will develop lung cancer at some point in their lifetime, a large-scale, international study reveals.

Scientists announce a previously unknown link between lung cancer and a particular BRCA2 defect, occurring in around 2 per cent of the population, in research published in Nature Genetics today (Sunday).

The defect in BRCA2 - best known for its role in breast cancer - increases the risk of developing lung cancer by about 1.8 times.

Smokers as a group have a high lifetime risk of around 13 per cent (16 per cent in men and 9.5 per cent in women). The new study therefore suggests around one in four smokers with the BRCA2 defect will develop lung cancer. Around 10 million adults in Great Britain smoke, which means that up to around 200,000 adult smokers could have the specific BRCA2 defect, known as BRCA2 c.9976T.

... more about:
»BRCA »BRCA2 »Cancer »DNA »Genetics »Smokers »breast »defect »drugs »findings »lung »mutations »ovarian

The researchers, led by a team at The Institute of Cancer Research, London, compared the DNA of 11,348 Europeans with lung cancer and 15,861 without the disease, looking for differences at specific points in their DNA. The team was mainly funded by the US National Institute of Health, with additional support from Cancer Research UK.

The link between lung cancer and defective BRCA2 – known to increase the risk of breast, ovarian and other cancers – was particularly strong in patients with the most common lung cancer sub-type, called squamous cell lung cancer. The researchers also found an association between squamous cell lung cancer and a defect in a second gene, CHEK2, which normally prevents cells from dividing when they have suffered damage to their DNA.

The results suggest that in the future, patients with squamous cell lung cancer could benefit from drugs specifically designed to be effective in cancers with BRCA mutations. A family of drugs called PARP inhibitors have shown success in clinical trials in breast and ovarian cancer patients with BRCA mutations, although it is not known whether they could be effective in lung cancer.

Study leader Professor Richard Houlston, Professor of Molecular and Population Genetics at The Institute of Cancer Research (ICR), said: "Our study showed that mutations to two genes, BRCA2 and CHEK2, have a very large effect on lung cancer risk in the context of smoking. Mutated BRCA2 in particular seems to increase risk by around 1.8 times.

"Smokers in general have nearly a 15 per cent chance of developing lung cancer, far higher than in non-smokers. Our results show that some smokers with BRCA2 mutations are at an enormous risk of lung cancer – somewhere in the region of 25 per cent over their lifetime.

"Lung cancer claims more than a million lives a year worldwide and is by far the biggest cancer killer in the UK. We know that the single biggest thing we can do to reduce death rates is to persuade people not to smoke, and our new findings make plain that this is even more critical in people with an underlying genetic risk."

Professor Paul Workman, Deputy Chief Executive of The Institute of Cancer Research, said:

"These findings indicate that around a quarter of smokers with a specific defect in their BRCA2 gene will develop lung cancer – a disease which is almost invariably fatal. All smokers are taking a considerable risk with their health, regardless of their genetic profile, but the odds are stacked even more heavily against those with this genetic defect who smoke."

Henry French | Eurek Alert!
Further information:
http://www.icr.ac.uk

Further reports about: BRCA BRCA2 Cancer DNA Genetics Smokers breast defect drugs findings lung mutations ovarian

More articles from Health and Medicine:

nachricht An ounce of prevention: Research advances on 'scourge' of transplant wards
28.08.2015 | University of Wisconsin-Madison

nachricht Hypoallergenic parks: Coming soon?
27.08.2015 | American Society of Agronomy

All articles from Health and Medicine >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: OU astrophysicist and collaborators find supermassive black holes in quasar nearest Earth

A University of Oklahoma astrophysicist and his Chinese collaborator have found two supermassive black holes in Markarian 231, the nearest quasar to Earth, using observations from NASA's Hubble Space Telescope.

The discovery of two supermassive black holes--one larger one and a second, smaller one--are evidence of a binary black hole and suggests that supermassive...

Im Focus: What would a tsunami in the Mediterranean look like?

A team of European researchers have developed a model to simulate the impact of tsunamis generated by earthquakes and applied it to the Eastern Mediterranean. The results show how tsunami waves could hit and inundate coastal areas in southern Italy and Greece. The study is published today (27 August) in Ocean Science, an open access journal of the European Geosciences Union (EGU).

Though not as frequent as in the Pacific and Indian oceans, tsunamis also occur in the Mediterranean, mainly due to earthquakes generated when the African...

Im Focus: Self-healing landscape: landslides after earthquake

In mountainous regions earthquakes often cause strong landslides, which can be exacerbated by heavy rain. However, after an initial increase, the frequency of these mass wasting events, often enormous and dangerous, declines, in fact independently of meteorological events and aftershocks.

These new findings are presented by a German-Franco-Japanese team of geoscientists in the current issue of the journal Geology, under the lead of the GFZ...

Im Focus: FIC Proteins Send Bacteria Into Hibernation

Bacteria do not cease to amaze us with their survival strategies. A research team from the University of Basel's Biozentrum has now discovered how bacteria enter a sleep mode using a so-called FIC toxin. In the current issue of “Cell Reports”, the scientists describe the mechanism of action and also explain why their discovery provides new insights into the evolution of pathogens.

For many poisons there are antidotes which neutralize their toxic effect. Toxin-antitoxin systems in bacteria work in a similar manner: As long as a cell...

Im Focus: Fraunhofer IPA develops prototype of intelligent care cart

It comes when called, bringing care utensils with it and recording how they are used: Fraunhofer IPA is developing an intelligent care cart that provides care staff with physical and informational support in their day-to-day work. The scientists at Fraunhofer IPA have now completed a first prototype. In doing so, they are continuing in their efforts to improve working conditions in the care sector and are developing solutions designed to address the challenges of demographic change.

Technical assistance systems can improve the difficult working conditions in residential nursing homes and hospitals by helping the staff in their work and...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Networking conference in Heidelberg for outstanding mathematicians and computer scientists

20.08.2015 | Event News

Scientists meet in Münster for the world’s largest Chitin und Chitosan Conference

20.08.2015 | Event News

Large agribusiness management strategies

19.08.2015 | Event News

 
Latest News

Interstellar seeds could create oases of life

28.08.2015 | Physics and Astronomy

An ounce of prevention: Research advances on 'scourge' of transplant wards

28.08.2015 | Health and Medicine

Fish Oil-Diet Benefits May be Mediated by Gut Microbes

28.08.2015 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>