Hepatitis B Virus Reactivation in a Chronic Lymphocytic Leukemia Patient Treated with Ibrutinib

Jung Hye Choi; Joon Young Hur; Young-Woong Won

doi:10.4143/crt.2022.1524

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Correspondence Hepatitis B Virus Reactivation in a Chronic Lymphocytic Leukemia Patient Treated with Ibrutinib: Jung Hye Choi, Joon Young Hur, Young-Woong Won; Cancer Research and Treatment : Official Journal of Korean Cancer Association 2023;55(2):704-705.
DOI: https://doi.org/10.4143/crt.2022.1524
Published online: January 16, 2023

Department of Internal Medicine, Hanyang University Guri Hospital, Hanyang University College of Medicine, Guri, Korea

Correspondence: Jung Hye Choi, Department of Internal Medicine, Hanyang University Guri Hospital, Hanyang University College of Medicine, 153 Gyeongchun-ro, Guri 11923, Korea,
Tel: 82-31-560-2162, E-mail: jhcmd@hanyang.ac.kr

• Received: November 18, 2023 • Accepted: January 13, 2023

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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The risk of hepatitis B virus (HBV) reactivation during rituximab treatment in patients with occult HBV infection (hepatitis B virus surface antigen [HBsAg](−) and hepatitis B core antibody [HBcAb](+)) is well known, and antiviral prophylaxis is strongly recommended. Ibrutinib, a selective Bruton tyrosine kinase inhibitor, has been widely used as an effective treatment for chronic lymphocytic leukemia (CLL). It is presumed that HBV reactivation during ibrutinib treatment is possible because it induces strong immune suppression by inhibiting the B-cell receptor signaling pathway. Several reports have been published regarding HBV reactivation in patients with CLL receiving ibrutinib [1–3]. However, most reactivated patients already have received rituximab and/or hematopoietic transplantation before ibrutinib and there has been no reported case in Korea. Here we describe a case of HBV reactivation during ibrutinib in the absence of exposure to these therapies.

A 81-year-old woman was diagnosed with CLL (Rai stage III, TP53 fluorescence in situ hybridization(−)). Hepatitis serologic markers at the time of diagnosis were HBsAg (−) and hepatitis B virus surface antibody (HBsAb) (−). Chlorambucil was started as initial treatment and the best response was partial response (PR). However, after 16 months of chlorambucil treatment, the disease progressed. Ibrutinib was started 6 weeks after discontinuation of chlorambucil. At the time of ibrutinib initiation, HBV serum markers were HBsAg (−), HBsAb (+), and HBcAb (+), but HBV DNA test was not performed. Although 420 mg once daily is standard dose of ibrutinib, 280 mg was administered because of low body surface area (1.35 m²) and old age. PR was reached after 3 months, however, she was treated with ibrutinib intermittently due to recurrent infection and diarrhea. After 12 months of ibrutinib therapy, she developed HBV reactivation (reverse seroconversion) with increased liver enzyme (Fig. 1). HBV serology showed HBsAg/Ab (+/−), hepatitis Be antigen/Ab (+/−), and HBV DNA > 9×10⁸ copies/mL. Ibrutinib was stopped and tenofovir 25 mg was started. After three months of tenofovir treatment, HBV DNA decreased by 5,418 copies/mL, and ibrutinib was restarted. The patient has continued to take ibrutinib and tenofovir with undetectable HBV DNA level.

Guidelines for HBV monitoring and prophylaxis during ibrutinib treatment have not been established yet. Although there is not enough reports, the incidence of HBV reactivation was low in CLL receiving ibrutinib [2,4], and ibrutinib could be safely administered after antiviral control of HBV reactivation [5]. Antiviral prophylaxis is unlikely to be necessary; however, regular monitoring of HBV DNA and attention are required

NOTES

Ethical Statement

This study was approved by the Institutional Review Board of Hanyang University Guri Hospital with a waiver of informed consent (IRB No. GURI 2022-11-024) and performed in accordance with the principles of the Declaration of Helsinki.

Author Contributions

Conceived and designed the analysis: Choi JH.

Collected the data: Choi JH.

Contributed data or analysis tools: Choi JH, Hur JY, Won YW.

Performed the analysis: Choi JH.

Wrote the paper: Choi JH, Hur JY, Won YW.

Conflicts of Interest

Conflict of interest relevant to this article was not reported.

Fig. 1

Hepatitis B virus serum markers during course of treatment. ALT, alanine transaminase; AST, aspartate aminotransferase; HBcAb, hepatitis B core antibody; HBsAb, hepatitis B virus surface antibody; HbsAg, hepatitis B virus surface antigen; HBV, hepatitis B virus.

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2. Innocenti I, Reda G, Visentin A, Coscia M, Motta M, Murru R, et al. Risk of hepatitis B virus reactivation in chronic lymphocytic leukemia patients receiving ibrutinib with or without antiviral prophylaxis: a retrospective multicentric GIMEMA study. Haematologica. 2022;107:1470–3. Article PubMed PMC PDF
3. Hammond SP, Chen K, Pandit A, Davids MS, Issa NC, Marty FM. Risk of hepatitis B virus reactivation in patients treated with ibrutinib. Blood. 2018;131:1987–9. Article PubMed PDF
4. Yang S, Zhu R, Li N, Feng Y, Zuo R, Gale RP, et al. Ibrutinib in advanced vhronic lymphocytic leukemia/small lymphocytic lymphoma: lower risk of hepatitis B virus reactivation. Acta Haematol. 2022;145:54–62. Article PubMed PDF
5. Molica S, Levato L, Mirabelli R, Tedeschi A, Lentini M. Feasibility and safety of therapy with ibrutinib after antiviral control of hepatitis B virus (HBV) reactivation in chronic lymphocytic leukemia patients. Leuk Lymphoma. 2018;59:2734–6. Article PubMed

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Hepatitis B Virus Reactivation in a Chronic Lymphocytic Leukemia Patient Treated with Ibrutinib

Cancer Res Treat. 2023;55(2):704-705.

DOI: https://doi.org/10.4143/crt.2022.1524

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Hepatitis B Virus Reactivation in a Chronic Lymphocytic Leukemia Patient Treated with Ibrutinib

Fig. 1 Hepatitis B virus serum markers during course of treatment. ALT, alanine transaminase; AST, aspartate aminotransferase; HBcAb, hepatitis B core antibody; HBsAb, hepatitis B virus surface antibody; HbsAg, hepatitis B virus surface antigen; HBV, hepatitis B virus.

Fig. 1

Hepatitis B Virus Reactivation in a Chronic Lymphocytic Leukemia Patient Treated with Ibrutinib