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