Research into the cause of cancer involves many different disciplines including genetics, diet, environmental factors (i.e. chemical carcinogens). In regard to investigation of causes and potential targets for therapy, the route used starts with data obtained from clinical observations,

The WHO World Cancer Report said global cancer cases will rise from an estimated 14 million this year to 22 million annually within the next 20 years. The annual cancer deaths are also expected to increase from 8.2 million to 13 million a year.

For men, prostate and colorectal cancers were the second and third most commonly occurring cancers, while liver and colorectal cancers were the second and third most common causes of cancer death.

Cancer Facts & Figures 2025