Sentence: For those few patients who do not respond to first-line therapy , the combination of vinblastine , ifosfamide , and cisplatin is the most popular regimen for the subset of platinum-sensitive tumors .
Drug combination annotation:
[{'class': 'POS', 'spans': ['vinblastine', 'ifosfamide', 'cisplatin'], 'is_context_needed': True}]