Sentence: In this phase I study , we combined cyclophosphamide , alvocidib and rituximab ( CAR ) in a schema designed to mitigate tumor lysis syndrome ( TLS ) seen previously with alvocidib .
Drug combination annotation:
[{'class': 'POS', 'spans': ['cyclophosphamide', 'alvocidib', 'rituximab'], 'is_context_needed': True}]