Introduction: : The ongoing SARS-CoV-2 pandemic is a serious threat for the health of immunocompromised patients. Among neutralizing antibody-based therapeutics, convalescent plasma containing polyclonal anti-SARS-CoV-2 immunoglobulins has promising results in both congenital and iatrogenic immunodeficiencies in oncohematological and transplant patients.
Areas covered: : This article discusses case reports, case series and controlled studies detailing the efficacy of convalescent plasma in immunocompromised patients.
Expert opinion: : Convalescent plasma, when administered at high neutralizing antibody titers, is a safe and effective treatment for frail immunocompromised patients. Genetic monitoring of refractory patients is recommended to intercept intra-host emergence of SARS-CoV-2 variants.
Keywords: Convalescent plasma; covid-19; hyperimmune serum; neutralizing antibodies; polyclonal immunoglobulins; sars-cov-2.