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논문 기본 정보

자료유형
학술저널
저자정보
Oh Young Ju (Department of Surgery Korea University Anam Hospital Korea University School of Medicine Seoul Korea.) Kim Jongman (Department of Surgery Samsung Medical Center Sungkyunkwan University School of Medicine Seoul Korea.) Kang Eun-Suk (Department of Laboratory Medicine and Genetics Samsung Medical Center Sungkyunkwan University School of Medicine Seoul Korea.) Rhu Jinsoo (Department of Surgery Samsung Medical Center Sungkyunkwan University School of Medicine Seoul Korea.) Choi Gyu-Seong (Department of Surgery Samsung Medical Center Sungkyunkwan University School of Medicine Seoul Korea.) Joh Jae-Won (Department of Surgery Samsung Medical Center Sungkyunkwan University School of Medicine Seoul Korea.)
저널정보
대한의학회 Journal of Korean Medical Science Journal of Korean Medical Science Vol.38 No.16
발행연도
2023.4
수록면
1 - 5 (5page)
DOI
10.3346/jkms.2023.38.e121

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Background: Liver transplant (LT) recipients were considered a vulnerable population during the coronavirus disease 2019 (COVID-19) pandemic. The clinical efficacy of the COVID-19 vaccine is unknown in immunocompromised patients. The purpose of this study was to provide evidence of antibody responses after COVID-19 vaccination in LT recipients. Methods: This study enrolled 46 patients who underwent LT at Samsung Medical Center (Seoul, Korea) before implementation of the one-dose vaccine in Korea. Those who completed the two-dose COVID-19 vaccine between August 2021 and September 2021 were included and followed through December 2021. Semiquantitative anti-spike serologic testing was performed using the Roche Elecsys anti-SARS-CoV-2 S enzyme immunoassay (Roche Diagnostics, Rotkereuz, Switzerland) with a positive cutoff of at least 0.8 U/mL. Results: Among all 46 participants, 40 (87%) demonstrated an antibody response after the second dose of a COVID-19 vaccine, while six (13%) had no antibody response after the second dose. Upon univariate analysis, patients with higher antibody titer had longer years since LT (2.3 ± 2.8 vs. 9.4 ± 5.0, P < 0.001). A lower median tacrolimus (TAC) level before vaccination and after the second dose of COVID-19 vaccine indicated a significantly higher antibody response (2.3 [1.6–3.2] vs. 7.0 [3.7–7.8], P = 0.006, 2.5 [1.6–3.3] vs. 5.7 [4.2–7.2], P = 0.003). Period between 2nd vaccination and serologic testing was significantly higher in the antibody-response group compared to the no-antibody-response group (30.2 ± 24.0 vs. 65.9 ± 35.0, P = 0.012). A multivariate analysis of antibody responses revealed TAC level before vaccination as a statistically significant factor. Conclusion: A higher TAC level before vaccination resulted in less effective vaccination in LT patients. Booster vaccinations are required, especially for patients in the early stage after LT who have compromised immune function.

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