Cancer mutation patterns differ in smokers, nonsmokers | Science News

ADVERTISEMENT

MISSION CRITICAL

Support credible science journalism.

Subscribe to Science News today.


News

Cancer mutation patterns differ in smokers, nonsmokers

DNA damage signatures offer clues to origin of malignancies in various tissues

By
2:06pm, November 3, 2016
lady smoking

SMOKE SIGNALS  Zeroing in on DNA mutations in tumors from nonsmokers and smokers offers clues to cancers’ causes.

DNA in cancerous tissues of tobacco smokers shows mutation patterns that differ from those in cancerous tissues of nonsmokers, a new analysis finds. The new study, in the Nov. 4 Science, reveals how smoking contributes to different cancers, enhancing several kinds of DNA damage.

“We are doing a sort of molecular archaeology,” says cancer geneticist Ludmil Alexandrov of Los Alamos National Laboratory in New Mexico, who led the analysis. While smoking’s link to cancer has been known for decades, “it’s always been a bit of a mystery why smoking increases the risk of cancers like bladder or kidney — tissues that aren’t exposed to smoke.”

This article is available only to subscribing members. Join the Society today or Log in.

Get Science News headlines by e-mail.

More from this issue of Science News

From the Nature Index Paid Content