O
OCTOPUS
Optimal Clinical Trials Platform for Progressive Multiple Sclerosis
ODYSSEY (PENTA20)
A randomised trial of dolutegravir-based antiretroviral therapy vs. standard of care in children with HIV infection starting first-line or switching to second-line antiretroviral therapy.
OE02
Randomised controlled clinical trial of surgery with or without pre-operative chemotherapy in the treatment of respectable cancer of the oesophagus
OE05
A randomised controlled trial comparing standard chemotherapy followed by resection versus ECX chemotherapy followed by resection in patients with resectable adenocarcinoma of the oesophagus
Oesophageal cancer: Preoperative radiotherapy, a systematic review and IPD meta-analysis
Preoperative radiotherapy for oesophageal carcinoma: systematic review and meta-analysis of individual patient data
OV05
Early treatment based on CA125 levels alone versus delayed treatment based on conventional clinical indicators
OV07
Phase III study of Erlotinib vs. observation in ovarian cancer