A

Add-Aspirin

A phase III double-blind, placebo-controlled, randomised trial assessing the effects of aspirin on disease recurrence and survival after primary therapy in common non-metastatic solid tumours

AALPHI

Adolescents and Adults Living with Perinatal HIV cohort

AB01

A randomised trial of epirubicin and cyclosphamide versus epirubicin and paclitaxel in the treatment of women with metastatic breast cancer

ARREST

Adjunctive Rifampicin to Reduce Early mortality from STaphylococcus aureus bacteraemia: a multi-centre, randomised, blinded, placebo controlled trial

ARROW

Anti-retroviral research for Watoto

AXIS

A randomised trial of post-operative portal vein infusion of fluorouracil vs surgery alone for colorectal cancer, and of peri-operative radiotherapy vs no radiotherapy for rectal cancer

ACTT-EU/UK

Adaptive COVID-19 Treatment Trial in the EU & UK (ACTT-EU/UK) - A Multicenter, Adaptive, Randomised Blinded Controlled Trial of the Safety and Efficacy of Investigational Therapeutics for the Treatment of COVID-19 in Hospitalised Adults