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