On Tuesday, American researchers revealed that lung cancer is, more often than not, dramatically different in females than it is in males, in another study that hints at ways to custom-make treatment for patients of cancer.

They also discovered that some patients who are older suffer from forms of lung cancer that end up making them more likely to benefit from chemotherapy, but the treatment can be harsh.

The study has come as the latest addition to a series of new researches that show that caner is much more genetically complex than doctors had previously estimated.

For the sake of study, Dr. Anil Potti from the Duke University in North Carolina, along with his colleagues, analyzed data collected from 787 patients suffering from non-small cell lung cancer, all the while studying how well they responded to treatment and studying their DNA.

"Our study supports two key findings: First, the biology of lung cancer in women is dramatically different from what we see in men. Women, in general, have a less complex disease, at least in terms of the numbers of molecular pathways involved. We also discovered that there is a subset of elderly patients would probably benefit from treatments that we've normally reserved for younger patients", said Dr. Potti.