Risk Factors For Hepatitis B Virus Reactivation Research Articles

Hepatitis B Reactivation and Vaccination Effectiveness after Solid Organ Transplantation: A Matched Case-Control Study.

Solid organ transplant (SOT) recipients are at significant risk of hepatitis B (HB) virus (HBV) reactivation (HBVr). Despite the clinical significance of HBVr after solid organ transplantation, data on the risk factors for HBVr and vaccine effectiveness in SOT recipients with resolved HBV infection are limited. This study evaluated the risk factors for HBVr and the seroconversion rates after HBV vaccination in SOT recipients. Patients who had undergone solid organ transplantation and those with a resolved HBV infection were identified. We matched patients who experienced post-transplantation HBVr with those who did not. We also explored the characteristics and seroconversion rates of HBV-vaccinated patients following transplantation. In total, 1299 SOT recipients were identified as having a resolved HBV infection at the time of transplantation. Thirty-nine patients experienced HBVr. Pre-transplant HB surface antibodies (anti-HBs) positivity and allograft rejection within 3 months after transplantation were independently associated with HBVr. Among the 17 HBV-vaccinated patients, 14 (82.4%) received three or fewer vaccine doses, and 13 (76.5%) had seroconversion with positive anti-HBs results. Pre-transplant anti-HBs(-) status and allograft rejection were risk factors for HBVr in SOT recipients with a resolved HBV infection, and HBV vaccination after transplantation resulted in a high rate of anti-HBs seroconversion. HBV vaccination after transplantation should be considered to reduce the HBVr risk.

Impact of Hepatitis B Surface and Core Antibody Levels on Hepatitis B Virus Reactivation.

Hepatitis B virus reactivation (HBV-R) is a serious complication that can occur in patients with resolved HBV infection during cancer chemotherapy. We examined the levels of HBV surface antibody (HBsAb) and HBV core antibody (HBcAb) to assess the incidence of HBV-R in cancer patients including hematopoietic stem cell transplantation (HSCT) and rituximab administration. This retrospective cohort study included 590 patients with resolved HBV infection. The incidence of HBV-R was evaluated 761.5 (range, 90-3898) days after the inititiation of chemotherapy. Of the patients, 13 (2.2%) developed HBV-R after the start of chemotherapy. All 13 patients exhibited lower HBsAb (<100 mIU/mL) levels at baseline. A higher level of HBcAb (≥100 cut off index (C.O.I.)) was a possible risk factor for HBV-R as well as HSCT and rituximab administration. The simultaneous presence of HBsAb <100 mIU/mL and HBcAb ≥100 C.O.I. increased the risk of HBV-R by 18.5%. Patients treated with rituximab were at a higher risk of HBV-R (18.4%) despite having HBcAb <100 C.O.I. Our results suggest that assessment of HBsAb and HBcAb levels prior to the chemotherapy is important for identifying patients at high risk of HBV-R, especially in solid cancers without HSCT and rituximab administration.

Hepatitis B Virus Infection Status and Reactivation Analysis in Multiple Myeloma in China

Background: China is a highly endemic area for Hepatitis B virus (HBV) infection and HBV reactivation is an event of concern in treating patients with hematologic malignancy. However, there were very few reports regarding HBV reactivation in patients with multiple myeloma (MM) in China. Since the approval of novel agents, especially immunotherapy such as monoclonal antibody and chimeric antigen T cell immunotherapy, the risk of HBV reactivation has increased. Therefore, the study aimed to evaluate the HBV infection status in MM and explore the incidence and risk factors of HBV reactivation in MM patients in China. Methods: Newly diagnosed MM patients with available serologic assays for HBV infection were retrospectively enrolled between June 30, 2008 and December 30, 2022 in West China Hospital, Sichuan University. Demographic and clinical data were obtained from the “HemaTank” Chinese Multiple Myeloma Database (HCMMD). Meanwhile, patients diagnosed with Waldenstrom Macroglobulinemia (WM) at the same time were enrolled as the control group. HBV reactivation was defined as the occurrence of one of the following: ≥ 2 log increase in HBV-DNA levels from baseline level, detection of HBV-DNA with level &amp;gt; 100 IU/ml in a person with undetectable HBV DNA at baseline or HBsAg-negative becoming positive. The penalized maximum likelihood logistic regression for rare events was applied to identify independent risk factors related to HBV reactivation. Results: The study recruited 3040 MM patients with a median age of 62 (range 14~98) and 240 WM patients with a median age of 63 (range 25~92). The HBsAg-positive rates were similar between MM and WM (9.4% vs 10.8%, P=0.49), but both the HBcAb-positive rates and HBeAb-positive rates in WM were significantly higher than MM (76.3% vs 60.7%, P&amp;lt;0.001; 37.5% vs 25.1%, P&amp;lt;0.001). The analysis of co-expression of HBV markers shows that the prevalence of HBsAg-/Anti-HBs+/anti-HBC- in MM was significantly higher than WM (16.7% vs 8.3%, P&amp;lt;0.001) and HBsAg-/Anti-HBs-/anti-HBC+ in MM was significantly lower than WM (18.3% vs 27.1%, P&amp;lt;0.001). However, he prevalence of HBsAg+/ HBeAg+/anti-HBC+ and HBsAg+/ anti-HBeAb+/anti-HBC+ were similar between MM and WM (0.5% vs 1.3%, P=0.158; 8.6% vs 8.8%, P=0.503). The baseline characteristics of HBsAg-positive MM and HBsAg-negative MM were summarized in Table 1. The rates of HBsAg-positive MM were significantly increased in young male patients (P&amp;lt;0.05). The level of ALT and AST, and the incidence of HBV reactivation, liver cirrhosis and pulmonary disease were significantly higher in HBsAg-positive MM than in HBsAg-negative MM (P&amp;lt;0.05). Of the 2147 MM patients who have received at least one line of chemotherapy (Table 1), 924 (43%) MM patients received bortezomib-containing or lenalidomide-containing regimens as the frontline therapy, while only 21 (1.0%) received a daratumumab-containing regimen as the frontline therapy. During hospital-documented follow-up visits, 26 (1.21%) MM patients have experienced HBV reactivation. According to the multivariate analysis of risk factors for HBV reactivation in MM, liver cirrhosis (OR 8.63, 95%CI 2.95-25.24, P&amp;lt;0.001), autologous stem cell transplantation (OR 6.03, 95%CI 2.47-14.72, P&amp;lt;0.001) and HBsAg-positive (OR 14.45, 95%CI 6.50-32.14, P&amp;lt;0.001) were independent risk factors associated with high prevalence of HBV reactivation. The ROC curve of the model integrating the three factors is shown in Figure 1, and the AUC was 0.8584. Conclusions: Among Chinese MM patients with multiple myeloma, a high proportion of MM patients presented with resolved hepatitis B virus infection, whereas HBV reactivation was pretty rare. However, long-term HBV DNA levels monitoring is still needed for MM patients at high risk for HBV reactivation.

HBV reactivation in HBsAg-/HBcAb+ rheumatoid arthritis patients receiving biologic/targeted synthetic DMARDs.

Rheumatoid arthritis (RA) patients seropositive for hepatitis B core antibody (HBcAb) and negative for hepatitis B surface antigen (HBsAg) are at risk of hepatitis B virus (HBV) reactivation when treated with biologic or targeted synthetic (b/ts) disease-modifying antirheumatic drugs (DMARDs). The study aims to investigate the risk in this population. From January 2004 through December 2020, 1068 RA patients undergoing b/tsDMARDs therapy and 416 patients with HBsAg-/HBcAb+ were enrolled. Factors associated with HBV reactivation were analysed. During 2845 person-years of follow-up, 27 of 416 (6.5%,9.5 per 1000 person-years) patients developed HBV reactivation, with a cumulative rate of HBV reactivation of 3.5% at 5 years, 6.1% at 10 years and 24.2% at 17 years. The median interval from beginning b/tsDMARDs to HBV reactivation was 85 months (range: 9-186 months). The risk of HBV reactivation varied by type of b/tsDMARD, with rituximab having the highest risk (incidence rate: 48.3 per 1000 person-years), followed by abatacept (incidence rate: 24.0 per 1000 person-years). In multivariate analysis, rituximab (adjusted hazard ratio [aHR]: 15.77, 95% confidence interval [CI]: 4.12-60.32, p = .001), abatacept (aHR: 9.30, 1.83-47.19, p = .007), adalimumab (aHR: 3.86, 1.05-14.26, p = .04) and negative baseline HBV surface antibody (anti-HBs, <10 mIU/mL) (aHR: 3.89, 1.70-8.92, p < .001) were independent risk factors for HBV reactivation. HBsAg-/HBcAb+ RA patients are susceptible to HBV reactivation during b/tsDMARD therapy. Those with negative baseline anti-HBs and those on certain b/tsDMARDs, such as rituximab, abatacept and adalimumab, have high reactivation risks. Risk stratification and management should be based on the patient's baseline anti-HBs titre and type of therapy.

HBV reactivation and its effect on survival in HBV-related hepatocarcinoma patients undergoing transarterial chemoembolization combined with tyrosine kinase inhibitors plus immune checkpoint inhibitors.

This study aimed to access hepatitis B virus (HBV) reactivation and its effect on survival in HBV-related hepatocarcinoma (HCC) patients who underwent transarterial chemoembolization (TACE) combined with tyrosine kinase inhibitors (TKIs) plus immune checkpoint inhibitors (ICIs). In this single-center retrospective study, we enrolled 119 HBV-related unresectable advanced HCC patients receiving TACE combined with TKIs plus ICIs. Risk factors for HBV reactivation were analyzed by logistic regression. Kaplan-Meier method was applied to draw the survival curve, and log-rank test was used to compare survival between patients with and without HBV reactivation. A total of 12 patients (10.1%) encountered HBV reactivation in our study, of which only 4 patients received antiviral prophylaxis. The incidence of HBV reactivation was 1.8% (1/57) in patients with detectable baseline HBV DNA and 4.2% (4/95) in patients with antiviral prophylaxis respectively. Lack of prophylactic antiviral treatment (OR=0.047, 95%CI 0.008-0.273, P=0.001) and undetectable HBV DNA (OR=0.073, 95%CI 0.007-0.727, P=0.026) were independent risk factors for HBV reactivation. The median survival time (MST) for all patients was 22.4 months. No survival difference was observed in patients with or without HBV reactivation. (MST: undefined vs 22.4 months, log-rank test: P=0.614). HBV reactivation could occur in HBV-related HCC patients who treated with TACE in combination with TKIs plus ICIs. Before and during the combination treatment, it is necessary to routinely monitor HBV DNA and to take effective prophylactic antiviral therapy.

Incidence, risk factors, and clinical outcomes of HBV reactivation in non-liver solid organ transplant recipients with resolved HBV infection: A systematic review and meta-analysis.

Current guidelines do not recommend routine antiviral prophylaxis to prevent hepatitis B virus (HBV) reactivation in non-liver solid organ transplant (SOT) recipients with resolved HBV infection, even in anti-hepatitis B surface antigen (anti-HBs)-negative recipients and those receiving intense immunosuppression. This systematic review and meta-analysis aimed to determine the incidence, risk factors, and clinical outcomes of HBV reactivation in non-liver SOT recipients. Three databases (PubMed, Embase, and Cochrane Library) were systematically searched up to December 31, 2022. Clinical studies reporting HBV reactivation in non-liver SOT recipients were included. Case reports, case series, and cohort studies with a sample size of less than 10 patients were excluded. Random-effects analysis was used for all meta-analyses. We included 2,913 non-liver SOT recipients with resolved HBV infection from 16 retrospective cohort studies in the analysis. The overall HBV reactivation rate was 2.5% (76/2,913; 95% confidence interval [95% CI 1.6%, 3.6%]; I2 = 55.0%). Higher rates of reactivation were observed in recipients with negative anti-HBs (34/421; 7.8%; 95% CI [5.2%, 10.9%]; I2 = 36.0%) by pooling 6 studies, experiencing acute rejection (13/266; 5.8%; 95% CI [2.3%, 14.5%]; I2 = 63.2%) by pooling 3 studies, receiving ABO blood type-incompatible transplantation (8/111; 7.0%; 95% CI [2.9%, 12.7%]; I2 = 0%) by pooling 3 studies, receiving rituximab (10/133; 7.3%; 95% CI [3.4%, 12.6%]; I2 = 0%) by pooling 3 studies, and receiving anti-thymocyte immunoglobulin (ATG, 25/504; 4.9%; 95% CI [2.5%, 8.1%]; I2 = 49.0%) by pooling 4 studies. Among recipients with post-transplant HBV reactivation, 11.0% (7/52; 95% CI [4.0%, 20.8%]; I2 = 0.3%) developed HBV-related hepatic failure, and 11.0% (7/52; 95% CI [4.0%, 20.8%]; I2 = 0.3%) had HBV-related death. Negative anti-HBs (crude odds ratio [OR] 5.05; 95% CI [2.83, 9.00]; p < 0.001; I2 = 0%), ABO blood type-incompatible transplantation (crude OR 2.62; 95% CI [1.05, 6.04]; p = 0.040; I2 = 0%), history of acute rejection (crude OR 2.37; 95% CI [1.13, 4.97]; p = 0.022; I2 = 0%), ATG use (crude OR 3.19; 95% CI [1.48, 6.87]; p = 0.003; I2 = 0%), and rituximab use (crude OR 3.16; 95% CI [1.24, 8.06]; p = 0.016; I2 = 0%) increased the risk of reactivation. Adjusted analyses reported similar results. Limitations include moderate heterogeneity in the meta-analyses and that most studies were conducted in kidney transplant recipients. Non-liver SOT recipients with resolved HBV infection have a high risk of HBV-related hepatic failure and HBV-related death if HBV reactivation occurs. Potential risk factors for HBV reactivation include rituximab use, anti-thymocyte immunoglobulin use, anti-HBs negative status, acute rejection history, and ABO blood type-incompatible transplantation. Further research on monitoring and routine antiviral prophylaxis of non-liver SOT recipients at higher risk of HBV reactivation is required.

Reactivation of Hepatitis B Virus in Lung Cancer Patients Receiving Tyrosine Kinase Inhibitor Treatment.

(1) Background: We aimed to evaluate the risk of hepatitis B virus (HBV) reactivation in lung cancer patients treated with tyrosine kinase inhibitor (TKI), particularly in those with resolved HBV infection. (2) Methods: In this retrospective hospital-based cohort study, we screened all lung cancer patients with positive hepatitis B core antibodies (anti-HBc) receiving systemic antineoplastic treatment during the period from January 2011 to December 2020. Cumulative incidences of HBV reactivation, and their hazard ratios (HRs), were evaluated after adjusting patient mortality as a competing risk. (3) Results: Among 1960 anti-HBc-positive patients receiving systemic therapy, 366 were HBsAg-positive and 1594 were HBsAg-negative. In HBsAg-positive patients without prophylactic NUC, 3-year cumulative incidences of HBV reactivation were similar between patients receiving chemotherapy and patients receiving TKI (15.0%, 95% confidence interval (CI): 0−31.2% vs. 21.2%, 95% CI: 10.8−31.7%; p = 0.680). Likewise, 3-year cumulative incidences of HBV-related hepatitis were similar between the two groups (chemotherapy vs. TKI: 15.0%, 95% CI: 0−31.2% vs. 9.3%, 95% CI: 2.8−15.7%; p = 0.441). In 521 HBsAg-negative TKI users, the 3-year cumulative incidence of HBV reactivation was only 0.6% (95% CI: 0.0−1.9%). From multivariable regression analysis, we found that the only independent risk factor for HBV reactivation in TKI users was HBsAg positivity (HR 53.8, 95% CI: 7.0−412.9; p < 0.001). (4) Conclusion: Due to high risks of HBV reactivation in HBsAg-positive TKI users, NUC prophylaxis can be considered. However, in patients with resolved HBV infection, such risks are lower, and therefore regular monitoring is recommended.

A multicenter evaluation of hepatitis B reactivation with and without antiviral prophylaxis after kidney transplantation.

Hepatitis B virus (HBV) reactivation in hepatitis B surface antigen (HBsAg)-negative and hepatitis B core antibody (anti-HBc)-positive kidney transplant recipients ranges between 1.4% and 9.6%. Limited evidence is available regarding routine antiviral prophylaxis and identifiable risk factors for HBV reactivation in this population. In this multicenter retrospective study, we evaluated the prevalence of HBV reactivation in HBsAg-negative anti-HBc-positive kidney transplant recipients who did or did not receive antiviral prophylaxis. The primary outcome assessed the prevalence of HBV reactivation, defined as a positive HBV DNA by PCR of any viral load at or above the minimal detection level. The principal safety outcomes assessed 1-year graft survival, 1-year all-cause mortality, biopsy-proven acute rejection, and antibody-mediated rejection. One hundred and sixty-one patients met inclusion criteria and comprised two groups, antiviral prophylaxis (n=14) and no antiviral prophylaxis (n=147). Of patients who did not receive prophylaxis, only five (3.4%) experienced HBV reactivation, whereas one (7.1%) patient in the prophylaxis group experienced reactivation over a median follow-up of 1103 days (p=.43). Furthermore, there were no differences with respect to all secondary outcomes. Statistical analysis demonstrated delayed graft function to be a significant factor associated with HBV reactivation. These study results suggest that the prevalence of HBV reactivation in HBsAg-negative anti-HBc-positive kidney transplant recipients is low, regardless of antiviral prophylaxis. Furthermore, there were no significant graft-related outcomes among those that did experience reactivation.

Clinical Outcomes of Hepatitis B Virus-Related Hepatocellular Carcinoma Patients with Undetectable Serum HBV DNA Levels.

Some hepatitis B virus (HBV)-related hepatocellular carcinoma (HCC) patients show undetectable serum HBV DNA levels at HCC diagnosis. The risk of HBV reactivation and its impact on clinical outcomes are not well-unknown. This retrospective cohort study included a total of 985 HBV-related HCC patients with undetectable serum HBV DNA levels (< 12IU/mL) at HCC diagnosis (112 were antiviral treatment (AVT)-naïve; 873 were receiving AVT). Incidence and risk factors for HBV reactivation (re-detection of HBV DNA in serum) during follow-up, as well as its association to overall survival, were assessed. During a median of 33.4months of follow-up (range: 0.2-124.2months), HBV reactivation was observed in 279 patients. HBV reactivation rate was significantly lower for patients receiving AVT than AVT-naïve patients (three-year cumulative incidence rate: 27.3% versus 56.0%; P < 0.001). In multivariable-adjusted analysis, the risk of HBV reactivation was lower for those receiving AVT compared to AVT-naïve patients (adjusted hazard ratio: 0.39, 95% confidence interval: 0.29-0.54). Overall survival was significantly lower for those experiencing HBV reactivation than those who did not (71.5% and 85.7% at five-year) and was associated with higher risk of overall mortality (adjusted hazard ratio: 5.15, 95% confidence interval: 3.60-7.38). More than half of AVT-naïve patients experienced HBV reactivation within three years, which was associated with increased risk of overall mortality. The risk of HBV reactivation was lower for those receiving AVT, suggesting that prompt AVT needs to be considered for AVT naïve HBV-related HCC patients with undetectable HBV DNA levels.

Managing the Risk of Hepatitis B Virus Reactivation in Patients with B-Cell Lymphomas Treated with Obinutuzumab or Rituximab Immunochemotherapy

Introduction: Reactivation of hepatitis B virus (HBV) is an identified risk associated with immunochemotherapy for non-Hodgkin lymphoma (NHL) in patients (pts) with resolved HBV infection. This study aimed to evaluate the risk of HBV reactivation and explore risk factors in NHL pts with resolved HBV infection who received anti-CD20 antibody (obinutuzumab or rituximab)-containing immunochemotherapy in the phase III GOYA and GALLIUM studies (involving pts with previously untreated diffuse large B-cell lymphoma [DLBCL] and indolent NHL, respectively). Methods: Pts were randomized to receive induction with either obinutuzumab (1000 mg on days 1, 8, and 15 of cycle 1, and day 1 of cycles 2‒8) or rituximab (375 mg/m2 on day 1 of each cycle) in combination with CHOP (GOYA and GALLIUM), CVP (GALLIUM), or bendamustine (GALLIUM) for 6-8 cycles. In GALLIUM, induction was followed by obinutuzumab or rituximab maintenance. Baseline screening was performed locally for hepatitis B surface antigen (HBsAg) and antibody against hepatitis B core antigen (anti-HBc). Pts positive for HBsAg were excluded, while those with resolved HBV infection (HBsAg-negative but anti-HBc-positive) could be enrolled if they had baseline HBV DNA Results: Of 2797 evaluable pts (GOYA, 1407; GALLIUM, 1390), 326 pts were seropositive for anti-HBc (207 were seropositive for antibodies against HBsAg) and 11 had detectable but non-quantifiable HBV DNA (10 to Conclusions: HBV DNA monitoring-guided preemptive NAT was effective in preventing HBV-related hepatitis during treatment with obinutuzumab- or rituximab-containing immunochemotherapy. Antiviral prophylaxis was effective in preventing HBV reactivation and may be an appropriate option for pts with resolved HBV infection and multiple risk factors. Disclosures Kusumoto: Chugai: Honoraria, Other: GALLIUM and GOYA are sponsored by F. Hoffmann-La Roche Ltd. Third-party medical writing support, under the direction of Shigeru Kusumoto, was provided by Cheryl Wright of Gardiner-Caldwell Communications, and was funded by F. Hoffmann-La Roche Ltd, Research Funding. Arcaini: Celgene, Roche, Sandoz: Consultancy; Gilead: Research Funding; Pfizer, Celgene, Bayer, Roche: Membership on an entity9s Board of Directors or advisory committees. Kim: JJ Takeda: Research Funding; Celltrion, Inc: Consultancy, Honoraria; Novartis: Research Funding; Roche: Research Funding; Donga: Research Funding; Mundipharma: Research Funding; Kyowa-Kirin: Research Funding. Peters: Genentech, Merck: Honoraria; Roche: Honoraria. Tanaka: BMS: Honoraria, Research Funding; Chugai: Honoraria, Research Funding; GSK: Honoraria, Research Funding. Zelenetz: Celgene: Consultancy; Amgen: Consultancy. Kuriki: Chugai: Employment. Fingerle-Rowson: F. Hoffmann-La Roche Ltd: Employment, Equity Ownership. Nielsen: F. Hoffmann-La Roche Ltd: Employment, Equity Ownership. Ueda: Chugai: Employment. Piper-Lepoutre: Roche: Employment. Sellam: Roche: Employment. Tobinai: Daiichi Sankyo Co., Ltd: Consultancy, Honoraria; AbbVie: Research Funding; Celgene: Consultancy, Honoraria, Research Funding; HUYA Bioscience: Honoraria; Chugai: Honoraria, Research Funding; Eisai: Honoraria, Research Funding; GlaxoSmithKline: Research Funding; Janssen: Honoraria, Research Funding; Kyowa Hakko Kirin: Honoraria, Research Funding; Mundipharma: Honoraria, Research Funding; Ono Pharmaceutical: Honoraria, Research Funding; Servier: Research Funding; Takeda: Honoraria, Research Funding; Zenyaku Kogyo: Honoraria.

Low Risk for Viral Reactivation during Induction for Acute Myeloid Leukemia in Hepatitis B Silent Carriers Who Are Negativefor Hepatitis B Surface Antigen

Introduction: Latent hepatitis B virus (HBV) infection is a well-recognized risk factor for viral reactivation and life-threatening hepatitis during chemotherapy. Chronic HBV carriers, identified by the presence of hepatitis B antigen (HBsAg) in their serum, have a well-established high risk for reactivation. Patients, exposed to HBV, who have not become true carriers [HBsAg-negative, but anti-hepatitis B core antigen (HBc)-positive] are usually considered to have a “resolved” HBV infection. Current recommendations state that during chemotherapy all patients exposed to HBV in the past are to receive anti-HBV prophylaxis. However, these recommendations are based on data mainly driven from unselected series of cancer patients previously exposed to HBV. It has been clearly demonstrated that HBV reactivation is common in cases where immune suppressive therapy is applied (e.g., patients treated with corticosteroids and/or rituximab or those undergoing stem cell transplantation). Information regarding the incidence and risk factors of HBV reactivation in patients treated for acute myeloid leukemia (AML) is scarce. While some data support prophylaxis for chronic HBV carriers (HbSAg-positive) during chemotherapy for AML, it remains debatable whether this approach is required in AML patients with “resolved” HBV infection undergoing intensive chemotherapy.Methods: The current study reviewed medical files of 1200 patients who were diagnosed with AML between the years 2000-2017 and treated in three large hematology departments in Israel - at the Rambam Health Care Campus, Tel Aviv Sourasky Medical Center and Shaare Zedek Medical Center. Clinical characteristics and laboratory data were retrospectively analyzed. Each patient, diagnosed with AML, was tested for HbSAg, HbSAb, anti-HBc, anti-hepatitis C virus (HCV). Only patients who had not received prophylaxis with anti-HBV agents were included in the analysis.Results: A total of 38 patients with “resolved” HBV infection at the time of leukemia diagnosis were identified, including 15 females (39.5%) and 23 males (60.5%), with a median age of 59.5 years (range 35-80). Six (15.7%) patients were diagnosed with AML secondary to myelodysplastic syndromes (MDS). The following induction regimens were used: daunorubicin + cytarabine (“7+3”) in 34 patients (89.5%), clofarabine in two patients, and high-dose cytarabine (HIDAC) in two patients. Nine patients received re-induction with “7+3”. Twenty seven patients (71%) received consolidation - 26 with HIDAC and one with clofarabine (Table 1). Within 90 days following induction + consolidation therapy, no HBV reactivation was documented in any of the 38 patients. There was a mild and asymptomatic elevation in the levels of hepatocellular liver enzymes (up to 2.5 times the upper limit of normal) in some patients, which could also be attributed to other causes, such as drugs, sepsis, etc. In our cohort of patients, overall survival (OS) was identical to that observed in historical AML patients from our medical centers who were not HBV carriers (Fig. 1).Conclusions: AML patients with previous HBV infection (HBsAg-negative and anti-HBc-positive) undergoing intensive chemotherapy are not at an increased risk for virus reactivation. In the current study, none of the 38 patients had HBV reactivation, suggesting that omission of anti-HBV prophylaxis during induction and consolidation chemotherapy could be considered in select AML patients. Notably, two groups of AML patients with a higher risk of HBV reactivation, i.e., recipients of allogeneic stem cell transplantation and HbSAg-positive patients, were not included in the present study and the conclusions drawn are not applicable to these patient subsets. Larger studies are warranted to explore the role of HBV prophylaxis in “silent” carriers. [Display omitted] DisclosuresNo relevant conflicts of interest to declare.

Determination of reactivation rate and risk factors for Hepatitis B virus reactivation in low-positive cases: A retrospective cohort study

IntroductionIn quantitative assays for hepatitis B virus (HBV) DNA, although the amplification reaction signal is detected for low-positive cases, quantification remains challenging. HBV reactivation has been reported in many studies, but only a few have focused on HBV low-positive cases. This study aimed to determine the reactivation rate and risk factors for HBV reactivation in low-positive cases. MethodsIn this retrospective cohort study, we analyzed 7498 patients who had their HBV DNA measured at Sapporo Medical University Hospital between April 2008 and November 2020. Patient selection criteria were defined as follows: hepatitis B surface antigen was negative; HBV DNA was detectable but not quantifiable at least once. HBV DNA was monitored according to the guidelines for HBV reactivation. ResultsIn total, 49,086 HBV DNA quantitative tests were performed. HBV DNA levels of 2578 tests were detectable but not quantifiable. Eighty patients met the criteria in this study. The median observation period was 497 days, and the 2-year reactivation rate was 15%. Ten patients had low HBV DNA positivity at baseline. Malignant lymphoma was observed in 15 patients; chemotherapy was used to treat other solid tumors in 35 patients, and immunosuppressive therapy was used in 30 patients. Multivariate analysis revealed that HBV DNA detected below the quantification level at baseline was an independent risk factor for HBV reactivation (adjusted hazard ratio 5.82; P = 0.010). ConclusionsPatients with low HBV DNA positivity, especially at baseline, are at high risk for HBV reactivation and therefore require closer monitoring.

Management of Hepatitis B Virus Reactivation in Malignant Lymphoma Prior to Immunosuppressive Treatment

Hepatitis B reactivation is a common complication in lymphoma patients under immunosuppressive treatment with potentially serious and life-threating consequences. In this review, we discuss the basis of chronic Hepatitis B virus (HBV) infection, the definition and risk factors for HBV reactivation. We overview the management of HBV reactivation based on virological status and immunosuppressive regimen risk stratification. We also highlight and update information about the HBV reactivation in lymphoma patients under novel agent treatment, including newer monoclonal antibodies, small molecule inhibitors, and even chimeric antigen receptor T-cell immunotherapy.

Effects of Antiviral Therapy on HBV Reactivation and Survival in Hepatocellular Carcinoma Patients Undergoing Hepatic Artery Infusion Chemotherapy.

BackgroundThis study aimed to investigate the influence of hepatic artery infusion chemotherapy (HAIC) on hepatitis B virus (HBV) reactivation in hepatitis B surface antigen (HBsAg) positive patients with primary hepatocellular carcinoma (HCC) as well as evaluate the role of antiviral prophylaxis in these patients.MethodsWe enrolled 170 HBsAg-positive advanced HCC patients receiving HAIC using mFOLFOX regimen, of which 137 patients received antiviral prophylaxis. Risk factors for HBV reactivation were analyzed. The overall survival (OS) from the first application of HAIC were compared between antiviral and non-antiviral groups.ResultsA total of 25 patients (14.7%) developed HBV reactivation after HAIC, of which 16 patients received antiviral treatment and nine patients did not. The incidence of HBV reactivation was 11.7% (16/137) in antiviral group and 27.3% (9/33) in non-antiviral group respectively. No antiviral prophylactic was the only significant risk factor for HBV reactivation (OR=12.35, 95% confidence interval (CI) 4.35–33.33, p<0.001). Patients in antiviral group received more cycles of HAIC compared with non-antiviral group (3.11 ± 1.69 vs 1.75 ± 1.18, p<0.05) at the time of HBV reactivated. Seven of the 25 HBV reactivation patients developed hepatitis. OS in antiviral group was significantly longer than that of non-antiviral group (median 16.46 vs 10.68 months; HR=0.57; 95% CI, 0.36–0.91; p<0.05).ConclusionsHBV reactivation is more prone to occur in the HBsAg-positive HCC patients undergoing HAIC without antiviral prophylaxis. Regular monitoring of HBV DNA and antiviral prophylaxis are suggested to prevent HBV reactivation as well as prolong the OS of these patients.Name of the Trial RegisterHAIC Using Oxaliplatin Plus Fluorouracil/Leucovorin for Patients with Locally Advanced HCC.Clinical Trial Registration https://www.clinicaltrials.gov/, identifier NCT 02436044

Hepatitis B Virus Reactivation Potential Risk Factors in Hepatocellular Carcinoma via Transcatheter Arterial Chemoembolization: A Retrospective Research.

Background To explore the clinical characteristics of reactivation of hepatitis B virus (HBV) in hepatocellular carcinoma (HCC) after transcatheter arterial chemoembolization (TACE). The pathological correlation of prognosis and hepatitis B virus reactivation has been given detailed analyses in our research. Methods A total of 108 related TACE-treated HCC clinical data from January 2008 to January 2016 was gleaned and involved in this retrospective analysis. To lucubrate the nuance of survival rates between HBV reactivated group and HBV nonreactivated group, clinical data of each patient was analyzed in detail and refined the retrospective studies. Results HBV reactivation occurred in 42 patients with a proportion of 38.9%. The detected HBV DNA level ≥104 in patients showed a reactivation rate of 65.8% (25/38), which was significantly higher than the HBV DNA < 104 cases (24.3%, 17/70). Research data revealed a conspicuous lower cellular immunity (P < 0.01) and better 2-year survival rate (P=0.03) in the HBV-reactivated group when compared to the nonreactivated group. Conclusion Some of the patients with primary hepatocellular carcinoma possibly had HBV reactivation at post-TACE-therapy. And the predominant risk factors of HBV reactivation are positive HBV test and immunosuppression. Our study suggested that HBV reactivation at post-TACE-therapy is an independent predictor of poor prognosis and low survival rate as well as a crucial reason for poor prognosis and lower survival rate, which indirectly proved that it is urgent to necessitate the antiviral therapy and immune enhancer in improving the curative effect and prognosis of HCC patients.

Hepatitis B virus reactivation in kidney transplant patients with resolved hepatitis B virus infection: Risk factors and the safety and efficacy of preemptive therapy.

Hepatitis B virus (HBV) reactivation is associated with complications and adverse outcomes in patients with clinically resolved HBV infection who are seronegative for hepatitis B surface antigen (HBs Ag), and seropositive for hepatitis B core antibody (HBc Ab) and/or hepatitis B surface antibody (HBs Ab) before kidney transplantation (KT). We retrospectively analyzed 52 patients with resolved HBV infection who were HBV-DNA negative. HBV-DNA after KT was evaluated, and the occurrence of HBV reactivation and outcomes were monitored. We defined HBV reactivation as seropositivity for HBV-DNA at or above the minimal detection level of 1.0log IU/mL and treated preemptively (using entecavir) when the HBV-DNA level was at or above 1.3log IU/mL, in accordance with the Japanese Guidelines for HBV treatment. Among the 52 patients, the mean age was 57.2±10.8years. The median HBc Ab titer was 12.8 (interquartile range, 4.6-42.6) cutoff index, and five (9.6%) cases of HBV reactivation occurred. No patients developed graft loss and died due to HBV reactivation. Statistical analysis showed that age and HBc Ab titer were significant risk factors for HBV reactivation (P=.037 and P=.042, respectively). No significant differences were found between graft survival and the presence or absence of HBV reactivation. These results suggest that HBc Ab titer and age could be significant risk factors for HBV reactivation. Resolution of HBV infection did not appear to be associated with patient or graft survival, regardless of whether HBV reactivation occurred, when following our preemptive strategy.

Anti-HBc impacts on the risk of hepatitis B reactivation but not on survival of solid-organ transplant recipients.

Immunosuppression can lead to hepatitis B virus (HBV) reactivation in hepatitis B core antigen antibodies (anti-HBc) positive patients, especially those undergoing chemotherapy, although there is limited data on solid organ recipients, especially lung transplantation. Our aim was to analyze the risk of HBV reactivation and the potential impact of anti-HBc-positive status (both donors and recipients) on prognosis in a lung, kidney, and liver transplantation cohort.Retrospective analysis including data from all transplants in adults (2011–2012) in a tertiary hospital, with prospective HBV serology study to assess the risk of reactivation and its possible impact on survival.In total, 392 transplant recipients were included (196 kidney, 113 lung, 83 liver). Pre-transplantation anti-HBc screening was more frequent in liver recipients (P < .001) and donors (P < .001) than in kidney or lung. Fifty-five (14%) recipients were anti-HBc-positive and were not undergoing antiviral prophylaxis. Three (5.4%) cases of HBV reactivation occurred: 2 in pre-transplant anti-HBc-positive recipients and 1 with prior unknown anti-HBc status. All were HBeAg+ with HBV deoxyribonucleic acid (DNA) >10E8 IU/mL and only mild fibrosis. Baseline recipient anti-HBc positive status was the only factor associated with HBV reactivation. No reactivation cases occurred in lung or kidney recipients of anti-HBc positive grafts. Survival was lower in lung transplants, especially in human immunodeficiency virus-infected patients and those with prior immunosuppression.Anti-HBc positive status is a risk factor for HBV reactivation in solid organ recipients. Anti-HBc testing is highly recommended in solid-organ transplant recipients in order to identify those anti-HBc positive and therefore candidates for periodical hepatitis B surface antigen (HBsAg) and HBV DNA screening after transplant.

Optimal timing of antiviral therapy for patients with malignant tumor who presented with hepatitis B reactivation during chemotherapy and/or immunosuppressive therapy.

Background: Hepatitis B virus (HBV) reactivation may occur with chemotherapy and/or immunotherapy. Antiviral prophylaxis is recommended for all patients who are hepatitis B surface antigen (HBsAg)-positive during chemotherapy and/or immunosuppressive therapy. However, the optimal timing of antiviral therapy before chemotherapy and/or immunosuppressive therapy is not fully elucidated.Patients and methods: We retrospectively evaluated 446 HBsAg-positive patients who underwent chemotherapy and/or immunosuppressive therapy. The cumulative rates of HBV reactivation were evaluated using the Kaplan-Meier method and were compared using the log-rank test. The risk factors of HBV reactivation were examined via univariate and multivariate analyses using the Cox proportional hazards model.Results: The cumulative HBV reactivation rates of patients who received antiviral therapy before chemotherapy and/or immunosuppressive therapy were significantly lower than those of patients who received antiviral therapy after chemotherapy and/or immunosuppressive therapy (P = 0.002). The incidence of HBV reactivation was significantly different between patients who received antiviral therapy at least 1 day before chemotherapy and/or immunosuppressive therapy and those who did not (P = 0.006). No significant difference was observed in the HBV reactivation rates between patients who received antiviral therapy at least 2 days (P = 0.310), 3 days (P = 0.494), and 1 week (P = 0.655) before chemotherapy and/or immunosuppressive therapy and those who did not. The multivariate Cox proportional hazards model showed that women had a lower risk of developing HBV reactivation than men (P = 0.025). The use of the prophylactic antiviral agent entecavir, compared with lamivudine and telbivudine, was associated with the decreased risk of developing HBV reactivation (P = 0.002).Conclusion: HBsAg-positive patients who received preemptive antiviral therapy after chemotherapy and/or immunosuppressive therapy had a high risk of developing HBV reactivation. However, it is not necessary for patients to receive antiviral therapy at least 1 week before chemotherapy and/or immunosuppressive therapy.

Risk stratification and clinical course of hepatitis B virus reactivation in rheumatoid arthritis patients with resolved infection: final report of a multicenter prospective observational study at Japanese Red Cross Hospital

BackgroundThe prophylaxis for hepatitis B virus (HBV) reactivation assumes that hepatic injury after reactivation is often rapidly progressive and can evoke fulminant hepatitis. The incidence and prognosis of reactivation in patients with rheumatoid arthritis (RA) may be different from those receiving organ transplantation and cancer chemotherapy. This study aimed to investigate the incidence, risk factors, and clinical course of HBV reactivation and develop a scoring system for risk stratification in RA patients with resolved infection.MethodsHBV DNA was measured using real-time polymerase chain reaction, and patient data were collected for 4 years in RA patients with resolved HBV infection who were treated with steroids or synthetic or biologic immunosuppressive drugs.ResultsAmong 1127 patients, HBV DNA was detected in 57 patients (1.65/100 person-years); none of the reactivated patients exhibited worsening of hepatic function. Multivariate logistical analysis revealed that age > 70 years and HB core antibody (HBcAb) positivity alone were independent risk factors for HBV reactivation. HBV DNA ≥ 2.1 log copies/mL was observed in 15 patients (0.43/100 person-years); seven patients were treated with nucleic acid analogs (NAAs), whereas the remaining eight were observed without treatment. Among reactivated cases, 15 cases changed to HBV DNA-negative status spontaneously, whereas 24 cases remained HBV DNA positive < 2.1 log copies/mL during the observation period. We designed the following scoring system: HBV reactivation risk score = 1 × (age > 70 years) + 2 × (HBcAb positivity alone) + 1 × (treatment other than methotrexate monotherapy). This revealed that patients with the highest score had an odds ratio of 13.01 for HBV reactivation, compared to those with the lowest score.ConclusionsRapid progression and poor outcomes after HBV reactivation were not frequent in RA patients with resolved infection. Our new risk scoring system might be useful for screening and optimization of prophylactic treatment by distinguishing patients with significantly lower reactivation risk.

Incidence of hepatitis B reactivation during epidermal growth factor receptor tyrosine kinase inhibitor treatment in non–small-cell lung cancer patients

BackgroundReactivation of hepatitis B virus (HBV) is a documented risk during cytotoxic chemotherapy in patients with lung cancer. Cases of HBV reactivation in non–small-cell lung cancer (NSCLC) patients receiving epidermal growth factor receptor (EGFR) tyrosine kinase inhibitor (TKI) treatment have been reported; however, the incidence of HBV reactivation in patients treated with EGFR TKIs has not yet been reported. Materials and methodsWe enrolled 171 patients who were diagnosed as having NSCLC from 2011 through 2017 and who also had positive hepatitis B surface antigen (HBsAg). All patients had received EGFR TKIs as anticancer treatment for at least 2 weeks during their treatment course. Reactivation of HBV is defined as one of the following: an increase in HBV DNA by at least 10-fold compared to baseline or an absolute increase to >10ˆ5 IU/mL with abnormal liver function. ResultsThe median duration of EGFR TKI treatment was 10.5 months (95% confidence interval: 8.2–12.8). Sixteen (9.36%) patients met the criteria of HBV reactivation during EGFR TKI treatment, with an annual incidence of 7.86%. HBV reactivation occurred during erlotinib treatment in 6 patients, followed by 5 patients with gefitinib treatments, 3 patients with osimertinib treatment and 2 with afatinib treatment. No independent risk factor for HBV reactivation was identified. ConclusionNSCLC patients receiving EGFR TKI treatment may have a clinically meaningful risk of HBV reactivation during the treatment period. Thus, monitoring liver function, HBV viral load and serology of HBV (i.e., HBeAg and anti-HBc) during EGFR TKI therapy is recommended for NSCLC patients with positive HBsAg.