Sentence: Eligible patients with unresectable MPM , without disease progression following 4 to 6 cycles of pemetrexed and platinum were randomized 1:1 to observation or continuation of pemetrexed until progression , stratified by number of cycles ( < 6 or 6 ) , cis- or carboplatin containing regimen , and histology .
Drug combination annotation:
[{'class': 'COMB', 'spans': ['pemetrexed', 'platinum'], 'is_context_needed': True}]