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
OTAC
Outpatient Treatment with Anti-Coronavirus Immunoglobulin in people at higher risk for severe COVID-19
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