Trial arms In 'For participating sites' Participating sitesTrial management queriesTrial armsTrial documentsMeet the research team 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