Trial arms In 'For participating sites' Participating sitesTrial management queriesTrial armsTrial documentsMeet the research teamOur funders and collaboratorsContact us Back to 'CATALYST' All trial treatment arms are now closed to recruitment: CATALYST trial treatment arms: Arm 1 Usual care (control) Arm 2 Usual care + Gemtuzumab Ozogamicin Arm 3 Usual care + Namilumab Arm 4 Usual care + Infliximab