Published online Jun 28, 2024. doi: 10.3748/wjg.v30.i24.3052
Revised: May 10, 2024
Accepted: May 30, 2024
Published online: June 28, 2024
Processing time: 83 Days and 13.3 Hours
This editorial commented on an article in the World Journal of Gastroenterology titled “Risks of Reactivation of Hepatitis B Virus in Oncological Patients Using Tyrosine Kinase-Inhibitors: Case Report and Literature Analysis” by Colapietro et al. In this editorial, we focused on providing a more comprehensive exploration of hepatitis B virus reactivation (HBVr) associated with the usage of tyrosine kinase inhibitors (TKIs). It includes insights into the mechanisms underlying HBV reactivation, the temporal relationship between TKIs and HBV reactivation, and preventive measures. The aim is to understand the need for nucleos(t)ide analogs (NAT) and serial blood tests for early recognition of reactivation and acute liver injury, along with management strategies. TKIs are considered to be an intermediate (1%-10%) of HBVr. Current guidelines stipulate that patients receiving therapy with high or moderate risks of reactivation or recent cancer diagnosis must have at least tested hepatitis B surface antigen, anti-hepatitis B core antigen (HBc), and anti-hepatitis B surface antibody. Anti-HBc screening in highly endemic areas means people with negative tests should be vaccinated against HBV. Nucleoside or nucleotide analogs (NAs) like entecavir (ETV), tenofovir disoproxil fumarate (TDF), and tenofovir alafenamide (TAF) form the basis of HBV reactivation prophylaxis and treatment during immunosuppression. Conversely, lamivudine, telbivudine, and adefovir are generally discouraged due to their reduced antiviral efficacy and higher risk of fostering drug-resistant viral strains. However, these less effective NAs may still be utilized in cases where ETV, TDF, and TAF are not feasible treatment options.
Core Tip: Hepatitis B virus reactivation (HBVr) remains a major concern in patients treated with Immunosuppressants and immunomodulators in oncological settings. Patients harboring either overt or occult HBV infection may encounter HBV reactivation during immunosuppressive therapy. The likelihood of HBV reactivation is linked to the patient’s immune status and the initial condition of HBV infection. Depending on the risk, reactivation can be classified as low (< 1%), intermediate (1%-10%), and high (> 10%), It is important to administer nuclei(t)side analogs of high genetic barriers before and during antineoplastic treatment to prevent reactivation. The safety and effectiveness of immunomodulators are investigated. However, during treatment, clinical monitoring of liver enzymes and HBV DNA is required, and a prospective study is needed to determine appropriate antiviral therapy.