477: SYSTEMATIC REVIEW AND META-ANALYSIS OF MORTALITY IN CANCER PATIENTS TREATED IN INTENSIVE CARE UNITS. (16th December 2021) - Nazer, Lama; Brown, Anne Rain; Cuenca, John; Lopez-Olivo, Maria; Sirimaturos, Michael; Habash, Khader; Al-Qadheeb, Nada; May, Heather; Milano, Victoria; Taylor, Amy; Nates, Joseph