- 现金
- 62111 元
- 精华
- 26
- 帖子
- 30437
- 注册时间
- 2009-10-5
- 最后登录
- 2022-12-28
|
AS092
Immune checkpoint inhibitors and hepatitis B viral kinetics – a
territory-wide cohort study
Grace Lai-Hung Wong1,2, Terry Cheuk-Fung Yip1,2,
Vincent Wai-Sun Wong1,2, Yee-Kit Tse1,2, Henry Chan1,2,
Stephen L. Chan3. 1The Chinese University of Hong Kong, Medicine and
Therapeutics, Hong Kong, Hong Kong; 2The Chinese University of Hong
Kong, Institute of Digestive Disease, Hong Kong; 3The Chinese University
of Hong Kong, Clinical Oncology, Hong Kong, Hong Kong
Email: [email protected]
Background and Aims: Immunotherapy using immune checkpoint
inhibitors (ICI) have dramatically improved the survival of patients
with advanced or metastatic malignancies. Recent studies suggest
that the new programmed death receptor 1 (PD-1) and programmed
cell death ligand 1 (PD-L1) inhibitors have potential in the treatment
of patients with chronic HBV infection. We evaluated the kinetics of
hepatitis B virus (HBV) in patients with chronic hepatitis B or past
HBV infection.
Method: Thiswas a territory-wide retrospective observational cohort
study in Hong Kong.We identified patients through the Clinical Data
Analysis and Reporting System (CDARS) based on the drug record of
immune checkpoint inhibitors from 1 January 2014 to 31 October
2018. Patients whowere hepatitis B surface antigen (HBsAg)-positive
or HBsAg-negative but antibody to hepatitis B core antigen (anti-HBc)
positive were included.
Results: 395 patients (237 HBsAg-positive and 158 HBsAg-negative/
antiHBc-positive) were identified (male 84% and 70%; mean age 58
and 63 years; mean HBV DNA 1.9 and 0.06 log10 IU/mL respectively).
97% of HBsAg-positive and 28% HBsAg-negative/antiHBc-positive
patients were put on oral antiviral treatment. Hepatitis flare (ALT >2×
ULN) occurred in 31% of HBsAg-positive and 22% HBsAg-negative/
antiHBc-positive patients; severe hepatitis flare (ALT >5× ULN) 13%
and 12% respectively. HBV DNA increased to >2,000 IU/mL or >1
log10 IU/mL in 2 and 6 HBsAg-positive subjects respectively; whereas
none of the HBsAg-negative/antiHBc-positive subjects had such HBV
reactivation. No HBsAg-positive patients cleared HBsAg and no
HBsAg-negative/antiHBc-positive patients had HBsAg seroreversion
during follow-up period.
Conclusion: HBV reactivation is rare in patients received immunotherapy
in patients with chronic hepatitis B or past HBV infection.
None of our patients achieved HBsAg seroclearance after
immunotherapy. |
|