Dynamic Humoral Immune Response to Primary and Booster Inactivated SARS-CoV-2 Vaccination in Patients with Cirrhosis

Qian Zhu; Lu Wang; Xiaoxiao Hu; Yingzhi Zhang; Tianquan Huang; Taiyu He; Zhiwei Chen; Gaoli Zhang; Mingli Peng; Min Chen; Dachuan Cai; Xiaofeng Shi; Hong Ren

doi:10.14218/JCTH.2023.00108

Dynamic Humoral Immune Response to Primary and Booster Inactivated SARS-CoV-2 Vaccination in Patients with Cirrhosis

J Clin Transl Hepatol. 2023 Dec 28;11(7):1476-1484. doi: 10.14218/JCTH.2023.00108. Epub 2023 Aug 25.

Authors

Qian Zhu¹, Lu Wang¹, Xiaoxiao Hu¹, Yingzhi Zhang¹, Tianquan Huang¹, Taiyu He¹, Zhiwei Chen¹, Gaoli Zhang¹, Mingli Peng¹, Min Chen¹, Dachuan Cai¹, Xiaofeng Shi¹, Hong Ren¹

Affiliation

¹ Department of Infectious Diseases, Key Laboratory of Molecular Biology for Infectious Diseases (Ministry of Education), Institute for Viral Hepatitis, The Second Affiliated Hospital, Chongqing Medical University, Chongqing, China.

Abstract

Background and aims: Our aim was to determine the immune efficacy of a severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) booster vaccination in cirrhotic patients who had received the primary series.

Methods: We performed a longitudinal assessment in 48 patients with cirrhosis, 57 patients with chronic hepatitis B (CHB) and 68 healthy controls (HCs) to continuously track the dynamics of SARS-CoV-2 specific antibodies and memory B cells after receiving the primary series and booster dose at different times. A pseudovirus neutralization assay was used to determine neutralization against Omicron subvariants BA.2.12.1, BA.4 and BA.5 from serum samples collected from three cohorts.

Results: Serum anti-receptor-binding domain (RBD) immunoglobulin (Ig)G and neutralizing antibody (NAb) levels in cirrhotic patients were elevated within 15-45 days after completing the primary series before rapidly declining and reaching a valley at around 165-195 days. After receiving the booster dose, both antibody levels were significantly increased to levels comparable to patients with CHB and HCs. Subgroup analysis showed that booster vaccination induced weaker antibody responses in patients with decompensated cirrhosis than in those with compensated cirrhosis. The SARS-CoV-2 memory B-cell response in cirrhotic patients was durable during follow-up regardless of the hepatic fibro-cirrhosis grade. However, compared with the primary series, the booster dose did not result in an evident improvement of neutralization activity against the Omicron subvariants BA.2.12.1 and BA.4, and was followed by a significant decrease in the titer against BA.5.

Conclusions: A booster dose elicited a robust and durable humoral response to the wild-type strain in cirrhotic patients but not the Omicron subvariants. Repeated vaccination of inactivated SARS-CoV-2 vaccine may not benefit cirrhotic patients in neutralization against newly circulating strains.

Keywords: Booster dose; Cirrhosis; Humoral response; Omicron subvariants; SARS-CoV-2.