There's more evidence that cigarette smoking is related to cancer.
Researchers say the proof is in the genes.
When it's working properly, the gene helps prevent the spread of cancer. Cancer specialists call p-53 a tumor suppressor gene. But when p-53 isn't working, or is altered or mutated by cigarette smoke, cancer can develop. Researchers at The UT Southwestern Medical Center at Dallas think finding the genetic basis of cancer will yield better cancer treatments. Some of their research may eventually lead to a test which would predict who will develop lung cancer.