Heterologous SARS-CoV-2 booster vaccine for individuals with hematological malignancies after a primary SARS-CoV-2 mRNA vaccine series

Vaccine. 2024 Sep 17;42(22):126054. doi: 10.1016/j.vaccine.2024.05.081. Epub 2024 Jun 10.

Abstract

Heterologous COVID-19 vaccine boosters have not been evaluated for patients with hematological malignancies. A Novavax booster was administered for 56 individuals with hematological malignancies who had received a primary COVID-19 series and prior boosters with mRNA vaccines only. Blood specimens were obtained at baseline (pre-vaccine), 28 days, and 168 days after vaccination with the Novavax booster. The median fold change of anti-Spike IgG was 1.02 (IQR 0.79, 1.3) between baseline and Day 28. Circulating Spike protein-specific B cells increased 1.4-fold at Day 28 (p < 0.05). Increases in antibody and T cell responses were modest without significance, with a waning of humoral and cellular responses at 168 days after vaccination.

MeSH terms

  • Adult
  • Aged
  • Antibodies, Viral* / blood
  • Antibodies, Viral* / immunology
  • B-Lymphocytes / immunology
  • COVID-19 Vaccines* / administration & dosage
  • COVID-19 Vaccines* / immunology
  • COVID-19* / immunology
  • COVID-19* / prevention & control
  • Female
  • Hematologic Neoplasms* / immunology
  • Humans
  • Immunity, Humoral
  • Immunization, Secondary*
  • Immunoglobulin G* / blood
  • Male
  • Middle Aged
  • SARS-CoV-2* / immunology
  • Spike Glycoprotein, Coronavirus* / immunology
  • T-Lymphocytes / immunology
  • Vaccines, Synthetic / administration & dosage
  • Vaccines, Synthetic / immunology
  • mRNA Vaccines

Substances

  • COVID-19 Vaccines
  • Antibodies, Viral
  • Spike Glycoprotein, Coronavirus
  • Immunoglobulin G
  • mRNA Vaccines
  • spike protein, SARS-CoV-2
  • Vaccines, Synthetic