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Blood ; 137(2): 185-189, 2021 01 14.
Article in English | MEDLINE | ID: covidwho-953565


Vaccinations are effective in preventing infections; however, it is unknown if patients with chronic lymphocytic leukemia (CLL) who are treatment naïve (TN) or receiving Bruton tyrosine kinase inhibitors (BTKi's) respond to novel adjuvanted vaccines. Understanding the effect of BTKi's on humoral immunity is timely because BTKi's are widely used and vaccination against coronavirus disease 2019 is urgently needed. In 2 open-label, single-arm clinical trials, we measured the effect of BTKi's on de novo immune response against recombinant hepatitis B vaccine (HepB-CpG) and recall response against recombinant zoster vaccine (RZV) in CLL patients who were TN or on BTKi. The primary end point was serologic response to HepB-CpG (anti-hepatitis B surface antibodies ≥10 mIU/mL) and RZV (≥fourfold increase in anti-glycoprotein E). The response rate to HepB-CpG was lower in patients on BTKi (3.8%; 95% confidence interval [CI], 0.7-18.9) than patients who were TN (28.1%; 95% CI, 15.6-45.4; P = .017). In contrast, the response rate to RZV did not differ significantly between the BTKi (41.5%; 95% CI, 27.8-56.6) and TN cohorts (59.1%; 95% CI, 38.7-76.7; P = .2). BTKi's were associated with a decreased de novo immune response following HepB-CpG, whereas recall immune response following RZV was not significantly affected by BTKi therapy. These trials were registered at as #NCT03685708 (Hep-CpG) and #NCT03702231 (RZV).

Hepatitis B Vaccines/immunology , Herpes Zoster Vaccine/immunology , Immunity , Leukemia, Lymphocytic, Chronic, B-Cell/immunology , Protein Kinase Inhibitors/adverse effects , Vaccines, Synthetic/immunology , Adjuvants, Immunologic , Agammaglobulinaemia Tyrosine Kinase/antagonists & inhibitors , Aged , Female , Humans , Leukemia, Lymphocytic, Chronic, B-Cell/drug therapy , Male , Middle Aged , Patient Outcome Assessment , Protein Kinase Inhibitors/pharmacology , Protein Kinase Inhibitors/therapeutic use , Vaccination