<qa>  What is the source of the data?This study is a prospective cohort of cancer patients admitted to the ICU in which the investigators will evaluate the prognostic of cancer patients admitted for a ICU trial or treatment in ICU without limitations. This study will not consider any change in the treatment plan of the patients. The source of the data will be the clinical records of the patients during the admission and the records of the cancer unit. There will be no direct contact of the research team with the patients or their family. 