Sentence: In a phase II trial , patients with primary gastric cancer and clinical involvement of para-aortic nodes ( PAN ) were treated by neo-adjuvant chemotherapy with capecitabine and oxaliplatin combination , and responders were then submitted to gastrectomy with D2 lymphadenectomy .
Drug combination annotation:
[{'class': 'POS', 'spans': ['capecitabine', 'oxaliplatin'], 'is_context_needed': True}]