Real-World Effectiveness of Tixagevimab and Cilgavimab (Evusheld) in Patients With Hematological Malignancies

Anthony J. Ocon, Kate E. Ocon, Jennifer Battaglia, Soon Khai Low, Niraj Neupane, Hassan Saeed, Saad Jamshed, S. Shahzad Mustafa


Background: Immunocompromised individuals with hematological malignancy have increased risk for poor outcomes and death from severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). This special population may mount a suboptimal response to vaccination. We assessed the effectiveness of tixagevimab and cilgavimab (Evusheld), a monoclonal antibody combination against SARS-CoV-2, in conjunction with standard preventative measures, at preventing symptomatic incident infection.

Methods: Patients aged 18 years and older with hematological malignancy consented to receive Evusheld. Patients were followed longitudinally for development of symptomatic incident SARS-CoV-2 infections. Adverse events were monitored.

Results: Two hundred and three patients (94 female) with hematological malignancies and mean age 72 10 years were included. Of the patients, 99.5% had received at least one mRNA vaccination against SARS-CoV-2. Average time of follow-up was 151 50 days. Nineteen patients (9.3%) developed incident symptomatic SARS-CoV-2 infection, with only one (0.5%) requiring hospitalization. During the same follow-up period, local incident rate of infection was 84,123 cases (11.3% of population). Of those, 3,386 cases (4%) of SARS-CoV-2 required hospital admission. The incidence rate ratio was 0.79. No serious adverse events occurred following administration of Evusheld.

Conclusion: Patients with hematological malignancy who received Evusheld infrequently developed symptomatic infections or require hospitalization. The high-risk cohort incidence was at least as comparable to the average risk general population. Evusheld appears effective and is well tolerated, and may be administered in conjunction with vaccination and standard prevention measures, at decreasing incident SARS-Co-V2 cases in this high-risk population.

J Hematol. 2022;11(6):210-215


Hematological malignancy; SARS-CoV-2; Evusheld

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