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Immune checkpoint inhibition for non-small cell lung cancer in patients with pulmonary tuberculosis or Hepatitis B: Experience from a single Asian centre. | LitMetric

AI Article Synopsis

Article Abstract

Background: The importance of immune-checkpoint inhibitors (ICI) can no longer be understated since its move to front-line treatment in non-small cell lung cancer (NSCLC) in recent years. However, the safety and efficacy of ICI in special populations such as those with infections like tuberculosis (TB) and hepatitis B (HBV) remain unknown as they are routinely excluded from clinical trials.

Methods: Records of patients with advanced NSCLC who were treated with ICI from January 2014 to June 2019 at a single Asian centre were reviewed. Those with a history of HBV and/or TB were selected. In this group, safety and treatment outcomes including overall survival (OS), progression-free survival (PFS) and response rate were reported and compared against control.

Results: 191 patients received ICI, 47 (24.6%) had a history of TB/HBV. The median PFS in those with a history of TB/HBV was 5.7 months (95% CI 3.9-7.6), compared to 3.1 months (95% CI 2.4-3.8) in control (HR 0.61, 95% CI 0.39-0.93, p = 0.021). Median OS was 15.6 months (95% CI 10.2-21.0) compared to 11.1 months (95% CI 7.6-14.7 months) in the control group (HR 0.58, 95% CI 0.34-0.99, p = 0.046). Adverse events of any grade (G) were similar in both groups; slightly more patients with TB/HBV experienced G3 or higher adverse events. Four patients developed TB after initiation of ICI, none with previously documented TB experienced reactivation. Of the 42 patients with a history of HBV, eight had inactive chronic HBV and six had detectable viral load. None of the 34 patients who were previously exposed to HBV had reactivation.

Conclusion: The use of ICI appears to be safe and efficacious in patients with TB/HBV infection. Prospective studies are required to identify those at risk in order to optimise care to these groups of patients.

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Source
http://dx.doi.org/10.1016/j.lungcan.2020.05.020DOI Listing

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