Featured Research

from universities, journals, and other organizations

New mutation identified, associated with better survival in lung cancer patients

Date:
September 12, 2013
Source:
RIKEN
Summary:
Researchers have identified a mutation associated with a higher incidence of lung cancer in Japanese women who do not smoke, but who appear to have a better survival rate than others with lung cancer.

The mutation, a single nucleotide polymorphism (SNP) in a gene that protects cells from oxidative stress, is found four times more frequently in women than in men.
Credit: Riken

Japanese researchers have identified a mutation associated with a higher incidence of lung cancer in Japanese women who do not smoke, but better survival in lung cancer patients. In a study published today in the journal PLOS ONE, the team from the RIKEN Center for Life Science Technologies shows that the mutation, a single nucleotide polymorphism (SNP) in a gene that protects cells from oxidative stress, is found four times more frequently in women than in men.

Lung cancer is the leading cause of cancer-related deaths in many industrialized countries. Most deaths are due to long-term exposure to cigarette smoke, but non-smokers account for 10 -- 15% of cases.

Dr. Toshihisa Ishikawa and his team analyzed the DNA of patients with primary lung cancer and found that non-smoking Japanese women with two copies of the SNP (-617A) in the NFR2 gene had a markedly higher incidence of adenocarcinoma of the lung, as compared with non-smoking, homozygous males.

Furthermore, they find that both male and female lung cancer patients homozygous for the same SNP in the NRF2 gene survive lung cancer much better.

Nuclear factor erythroid-derived 2 (NF-E2)-related factor (NRF2) controls cellular adaptation to oxidants and electrophiles by inducing antioxidation and detoxification genes, and protects normal cells from external toxic challenges and oxidative stress.

Their study also suggests that lung cancer patients harboring a SNP (-617A) allele in the NRF2 gene in combination with the wild-type allele of the MDM2 gene have better prognosis.

"This is the first report providing clinical evidence that homozygous alleles for the SNP (-617A), one of the intrinsic genetic polymorphisms in the NRF2 gene, are associated with the overall survival of lung cancer patients," explains Dr. Ishikawa.

"The study strongly suggests that the presence of homozygous alleles for this SNP is a good prognostic biomarker for the assessment of the overall survival chances of patients with adenocarcinoma, as well as a practical tool for personalized cancer therapy," he concludes.


Story Source:

The above story is based on materials provided by RIKEN. Note: Materials may be edited for content and length.


Journal Reference:

  1. Yasuko Okano, Uru Nezu, Yasuaki Enokida, Ming Ta Michael Lee, Hiroko Kinoshita, Alexander Lezhava, Yoshihide Hayashizaki, Satoshi Morita, Masataka Taguri, Yasushi Ichikawa, Takeshi Kaneko, Yutaka Natsumeda, Tomoyuki Yokose, Haruhiko Nakayama, Yohei Miyagi, Toshihisa Ishikawa. SNP (–617C>A) in ARE-Like Loci of the NRF2 Gene: A New Biomarker for Prognosis of Lung Adenocarcinoma in Japanese Non-Smoking Women. PLoS ONE, 2013; 8 (9): e73794 DOI: 10.1371/journal.pone.0073794

Cite This Page:

RIKEN. "New mutation identified, associated with better survival in lung cancer patients." ScienceDaily. ScienceDaily, 12 September 2013. <www.sciencedaily.com/releases/2013/09/130912091659.htm>.
RIKEN. (2013, September 12). New mutation identified, associated with better survival in lung cancer patients. ScienceDaily. Retrieved September 23, 2014 from www.sciencedaily.com/releases/2013/09/130912091659.htm
RIKEN. "New mutation identified, associated with better survival in lung cancer patients." ScienceDaily. www.sciencedaily.com/releases/2013/09/130912091659.htm (accessed September 23, 2014).

Share This



More Health & Medicine News

Tuesday, September 23, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Ebola Costs Keep Mounting

Ebola Costs Keep Mounting

Reuters - Business Video Online (Sep. 23, 2014) The WHO has warned up to 20,000 people could be infected with Ebola over the next few weeks. As Sonia Legg reports, the implications for the West African countries suffering from the disease are huge. Video provided by Reuters
Powered by NewsLook.com
Ebola Cases Could Reach 1.4 Million Within 4 Months

Ebola Cases Could Reach 1.4 Million Within 4 Months

Newsy (Sep. 23, 2014) Health officials warn that without further intervention, the number of Ebola cases in Liberia and Sierra Leone could reach 1.4 million by January. Video provided by Newsy
Powered by NewsLook.com
WHO: Ebola Cases to Triple in Weeks Without Drastic Action

WHO: Ebola Cases to Triple in Weeks Without Drastic Action

AFP (Sep. 23, 2014) The number of Ebola infections will triple to 20,000 by November, soaring by thousands every week if efforts to stop the outbreak are not stepped up radically, the WHO warned in a study on Tuesday. Duration: 01:01 Video provided by AFP
Powered by NewsLook.com
5 Ways Men Can Prevent Most Heart Attacks

5 Ways Men Can Prevent Most Heart Attacks

Newsy (Sep. 23, 2014) No surprise here: A recent study says men can reduce their risk of heart attack by maintaining a healthy lifestyle, which includes daily exercise. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Health & Medicine

Mind & Brain

Living & Well

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins