COVID‐19 infection in patients with haematological malignancies: A single‐centre survey in the latest Omicron wave in China.

Summary: As the COVID‐19 variant Omicron surge in Beijing, China, a better understanding of risk factors for adverse outcomes may improve clinical management in patients with haematological malignancies (HM) diagnosed with COVID‐19. The study sample includes 412 cases, mainly represented by acute leukaemia, chronic myeloid leukaemia (CML), plasma cell disorders and lymphoma and chronic lymphocytic leukaemia. COVID‐19 pneumonia was observed in 10.4% (43/412) of patients, and severe/critical illness was observed in 5.3% (22/412). Among the 86 cases with advanced malignancies, 17.6% (12/86) of patients developed severe/critical COVID‐19, which was significantly higher than reported in patients with stable malignancies (9/326, 2.70%, p < 0.001). Similarly, the advanced malignancy cohort had a higher mortality rate (9/86, 10.5% vs. 0/326, 0%, p < 0.001) and a poor 30‐day overall survival (OS) compared with the stable malignancy cohort (74.2% vs. 100.0%, p < 0.0001). Overall, nine patients (2.2%) died. The primary cause of death was progressive HM in four patients and a combination of both COVID‐19 and HM in five patients. In the multivariable analysis, over 65 years of age, comorbidities and advanced malignancy were correlated with severe/critical COVID‐19 in HM patients. This study sheds light on the poor outcomes among COVID‐19 HM patients with the leading cause of advanced malignancy. [ABSTRACT FROM AUTHOR]