SLIDE 38 10/4/18 38
Prophylaxis versus Pre-emptive therapy
Reference) Antivirals vs controls (n) Antiviral timing Reactivation rates Lau et al.(2003) lamivudine vs pre-emptive treatment 1 week before chemotherapy or deferred until serological evidence
0% verus 53% (P = 0.002) Hsu et al.(2008) lamivudine vs pre-emptive treatment On day 1 of chemotherapy and until 2 months after or started on treatment if ALT levels >1.5xULN 11.5% versus 56% (P = 0.001) Huang et al.(2013) entecavir vs pre- emptive treatment Before chemotherapy to 3 months after or at the time of HBV reactivation At months 6, 12, and 18 0%, 0%, and 4.3% in the ETV prophylactic group versus 8%, 11.2%, and 25.9% (P = .019)
Lau G. Gastroenterology. 2003. Hsu C. Hepatology. 2008. Huang Y. J Clin Oncol. 2013.
Prophylaxis > pre-emptive therapy
Duration of therapy and monitoring
Loomba R. Gastroenterology. 2017. Hwang J. J Oncol Pract. 2015. Pattullo V. Clin Mol Hepatol. 2016.
Guideline Duration Monitoring
AGA 2-4 weeks prior to initiation and 6-12 months after last dose LFTs and HBsAg levels: every 3 months until 6 months after last dose EASL Receiving Rituxan: at least 18 months after cessation of therapy Immunosuppressive therapy: at least 12 months During prophylaxis: LFTs and HBV DNA every 3 to 6 months After withdrawal: LFT and HBV DNA at least 12 months after ASCO Up to 12 months after cessation of therapy HBV DNA and ALT levels every 3 months during therapy
AGA: American Gastroenterological Association, EASL: European Association for the Study of the Liver is a European, ASCO: American Society of Clinical Oncology