Real World Multicenter National Study to Evaluate the Effectiveness and Safety of Biosimilar Bevacizumab Elovie

Inclusion Criteria: * Participants of both sexes aged 18 years or older at the start of treatment with bevacizumab; * Participants diagnosed with metastatic colorectal cancer, clinical stage IV, unresectable, by clinical definition in medical records, according to the investigator's assessment at the initial consultation and before any type of palliative treatment; * Participants who are undergoing first-line treatment with Elovie and who have completed at least 1 cycle of treatment or participants who have started first-line treatment with another bevacizumab (reference or another biosimilar other than Elovie) but who have currently switched to Elovie and completed at least 1 cycle of treatment with it, and whose data is available at the institution participating in the study; * Participants with the capacity to understand and consent to their participation in the study through the Free and Informed Consent Form Exclusion Criteria: * Participants who use or have used bevacizumab in a manner different from that described in the current version of the Elovie® package insert; * Participants who have been treated with Elovie for a period longer than 12 treatment cycles; * Participants who have started first-line treatment with another bevacizumab (reference or another biosimilar other than Elovie) and have completed more than 2 treatment cycles with it; * Participants with a concomitant diagnosis of another active malignant neoplasm other than metastatic colorectal cancer.