The CARTIER study is a randomized, multicenter, open-label clinical trial comparing, in elderly patients with cancer under anti-tumoral treatment, two different cardiotoxicity prevention strategies: primary (intensive cardiovascular monitoring focused on prevention and early diagnosis and treatment of cardiotoxicity based in cardio-onco-hematology teams involved in cancer patient care) vs. secondary (current clinical practice where intensive cardiovascular monitoring is not routinely performed and cardiotoxicity patient care is based on the onco-hematologist criteria). The primary endpoint is to determine whether this primary prevention englobing cardiovascular monitoring plus intensive multidisciplinary management is superior to the current clinical practice in reducing all cause mortality. Other secondary objectives of the study are to analyze the impact of this intensive cardiovascular monitoring strategy on the incidence of cardiovascular mortality, oncological mortality, hospitalization and/or urgent care due to cardiovascular complications, hospitalization and/or urgent oncological care due to cancer complications, tumor progression and cost-effectiveness analysis. A total of 514 patients ≥ 65 years old diagnosed with any of the following onco-hematological cancers, colon, breast, lymphoma, chronic lymphoma leukemia, chronic myeloid leukemia or myeloma, undergoing standardized anti-tumoral treatment, will be recruited. The incidence of primary and secondary outcomes will be measured at 2 and 5 years