Observational Study Observational Trial Observational Study C1518527 A type of study in which individuals are observed or certain outcomes are measured. No attempt is made to affect the outcome (for example, no treatment is given). C16084 OBSERVATIONAL Studies among cancer patients and healthy populations that involve no intervention or alteration in the status of the participants. Studies in which biomedical and/or health outcomes are assessed in pre-defined groups of individuals. Subjects in the study may receive diagnostic, therapeutic, or other interventions, but the investigator does not assign specific interventions to the subjects of the study. Research Activity CDISC observational study Observational_Study Observational Study human subject study