This study will collect real-world data from advanced melanoma diagnosis through most recent visit and data sourced from patient medical records following a 2-part study design consisting of a random sample (Part 1) and an oversample (Part 2).
Adults 18 years or older Diagnosis of unresectable stage III and/or metastatic (stage IV) melanoma before 01-Nov-2015 Initiating a new line of therapy during the index period between 01-Jan-2015 and 31-May-2016, irrespective of advanced melanoma diagnosis date Medical history available for medical chart abstraction from date of diagnosis through most recent or current therapy (defined as end of data collection period)
Exclusion Criteria:
Physicians unwilling or unable to follow study instructions Patients who were previously enrolled in a cancer treatment-related clinical trial since the diagnosis of unresectable stage III and/or metastatic (stage IV) melanoma
